Airline codes | IATA | ICAO | Airline | Call Sign | Country | Comments |
| 1B | | Abacus International | | Singapore | |
| W9 | AAB | Abelag Aviation | ABG | Belgium | |
| AAD | Aero Aviation Centre Ltd. | SUNRISE | Canada | |
| SII | Aero Servicios Ejecutivos Internacionales | ASEISA | Mexico | |
| BZS | Aero Biniza | BINIZA | Mexico | |
| ACO | Aero Comondu | AERO COMONDU | Mexico | |
| AET | Aeronautical Radio of Thailand | AEROTHAI | Thailand | |
| ABM | Aero Albatros | ALBATROS ESPANA | Spain | |
| E4 | RSO | Aero Asia International | AERO ASIA | Pakistan | |
| ZI | AAF | Aigle Azur | AIGLE AZUR | France | |
| AAM | Aviation Management Corporation | AM CORP | United States | |
| AAO | Atlantis Airlines (USA) | ATLANTIS AIR | United States | |
| AAP | Aerovista Airlines | AEROVISTA GROUP | United Arab Emirates | |
| OZ | AAR | Asiana Airlines | ASIANA | Republic of Korea | |
| 4K | AAS | Askari Aviation | AL-AAS | Pakistan | |
| AAU | Australia Asia Airlines | AUSTASIA | Australia | Subsidiary merged into QANTAS |
| AAV | Astro Air International | ASTRO-PHIL | United States | |
| 8U | AAW | Afriqiyah Airways | AFRIQIYAH | Libya | |
| Q9 | AFU | Afrinat International Airlines | | Gambia | |
| AAX | Afric'air Express | AFREX | Ivory Coast |
| BRL | Air Brasd'or | BRASD'OR | Canada | |
| AFH | Air Fecteau | FECTO | Canada | |
| BRM | Air 500 | BOOMERANG | Canada | |
| KI | AAG | Air Atlantique | ATLANTIC | United Kingdom | |
| AAJ | Air Alma | AIR ALMA | Canada | |
| ACS | Air Cess | | Liberia | |
| ADT | Air Dorval | AIR DORVAL | Canada | |
| AHR | Air Adriatic | ADRIATIC | Croatia | |
| LD | AHK | Air Hong Kong | AIR HONG KONG | Hong Kong | |
| AHS | Air Viggi San Raffaele | AIRSAR | Italy | |
| AEQ | Air Express | LUNA | Sweden | |
| AAI | Air Aurora | BOREALIS | United States | |
| ACU | Air Cargo Transportation System | AFRISPIRIT | Kenya | |
| ACV | Air Charter Service | | United Kingdom | |
| ADC | Air Atlantic Dominicana | ATLAN-DOMINICAN | Dominican Republic | |
| ADW | Air Andaman | AIR ANDAMAN | Thailand | |
| UX | AEA | Air Europa | EUROPA | Spain | |
| I9 | AEY | Air Italy | AIR ITALY | Italy | |
| ASW | Air Southwest Ltd. | AIRSOUTHWEST | Canada | |
| ASX | Air Special | AIRSPEC | Czech Republic | |
| NX | AMU | Air Macau | AIR MACAO | Macao | |
| ZV | AMW | Air Midwest | AIR MIDWEST | United States | |
| HM | SEY | Air Seychelles | SEYCHELLES | Seychelles | |
| SFB | Air Sofia | AIR SOFIA | Bulgaria | |
| JA | BON | Air Bosna | AIR BOSNA | Bosnia and Herzegovina | |
| BRF | Air Bravo | AIR BRAVO | Uganda | |
| AF | AFR | Air France | AIRFRANS | France | |
| ACG | Air Partner | AIR PARTNER | United Kingdom | |
| SB | ACI | Air Caledonie International | AIRCALIN | France | |
| VSG | AirClass Airways | VISIG | Spain | formerly Visig Operaciones Aéreas |
| EH | AKX | Air Nippon Network Co. Ltd. | ALFA WING | Japan | |
| ALM | Air ALM | ANTILLEAN | Netherlands Antilles | |
| ALN | Air Lincoln | CHICAGO LINCOLN | United States | |
| ACM | Air Caledonia | WEST CAL | Canada | |
| AGM | Air Guam | AIR GUAM | United States | |
| ZW | AWI | Air Wisconsin | AIR WISCONSIN | United States | |
| ALU | Air Luxor STP | LUXORJET | São Tomé and Príncipe | |
| RSI | Air Sunshine | AIR SUNSHINE | United States | |
| GN | AGN | Air Gabon | GOLF NOVEMBER | Gabon | defunct |
| AFS | Air Data | | United Kingdom | |
| AFV | Air Afrique Vacancies | AFRIQUE VACANCE | Ivory Coast | |
| NQ | AJX | Air Japan | AIR JAPAN | Japan | |
| VD | | Air Liberté | | France | defunct |
| TT | KLA | Air Lithuania | KAUNAS | Lithuania | defunct |
| AMG | Air Minas Linhas Aéreas | AIR MINAS | Brazil | |
| 4N | ANT | Air North Charter - Canada | AIR NORTH | Canada | |
| ANV | Air Nevada | AIR NEVADA | United States | |
| NZ | ANZ | Air New Zealand | NEW ZEALAND | New Zealand | |
| AOE | Air One Executive | | Italy | |
| AMI | Air Maldives | AIR MALDIVES | Maldives | |
| QM | AML | Air Malawi | MALAWI | Malawi | |
| AMN | Air Montenegro | MONTENEGRO | Montenegro | |
| DR | BIE | Air Mediterranee | MEDITERRANEE | France | |
| TAH | Air Moorea | AIR MOOREA | France | |
| AVZ | Air Valencia | AIR VALENCIA | Spain | |
| AMO | Air Montreal (Air Holdings Inc.) | AIR MONTREAL | Canada | |
| BM | | Air Sicilia | | Italy | |
| AMR | Air Specialties Corporation | AIR AM | United States | Air American, Total Air |
| AMS | Air Muskoka | AIR MUSKOKA | Canada | |
| AJU | Air Jetsul | AIRJETSUL | Portugal | |
| AKA | Air Korea Co. Ltd. | | Republic of Korea | |
| LIV | Air Livonia | LIVONIA | Estonia | |
| ABL | Air BC | AIRCOACH | Canada | |
| ABN | Air Fret Senegal | | Senegal | |
| LJA | Air Jamahiriya Company | AIR JAMAHIRIYA | Libya | |
| G8 | AGB | Air Service Gabon | | Gabon | |
| 7T | AGV | Air Glaciers | AIR GLACIERS | Switzerland | |
| MVM | Air Cargo America | PEGASUS | United States | |
| AMY | Air Ambar | AIR AMBAR | Dominican Republic | |
| 6V | VGA | Air Vegas | AIR VEGAS | United States | |
| AOU | Air Tractor | AIR TRACTOR | Croatia | |
| APA | Air Park Aviation Ltd. | CAN-AM | Canada | |
| APG | Air People International | AIR PEOPLE | Thailand | |
| NH | ANA | All Nippon Airways | ALL NIPPON | Japan | |
| ANB | Air Navigation And Trading Co. Ltd. | AIR NAV | United Kingdom | |
| NGO | Air-Angol | AIR ANGOL | Angola | |
| TZ | TWG | air-taxi europe | TWINGOOSE | Germany | |
| NGP | Air Nigeria | REGAL EAGLE | Nigeria | |
| 2Q | SNC | Air Cargo Carriers | NIGHT CARGO | United States | |
| SND | Air Samarkand | ARSAM | Uzbekistan | |
| V7 | SNG | Air Senegal International | AIR SENEGAL | Senegal | defunct |
| SNY | Air Sandy | AIR SANDY | Canada | |
| AII | Air Integra | INTEGRA | Canada | |
| BFF | Air Baffin | AIR BAFFIN | Canada | |
| BDM | Air Bandama | BANDAMA | Ivory Coast | |
| AB | BER | Air Berlin | AIR BERLIN | Germany | |
| ABT | Air Brousse | AIR BROUSSE | Canada | |
| APV | Air Plan International | AIR PLAN | Democratic Republic of the Congo | |
| ARX | Air Xpress, Inc. | AIREX | United States | |
| HTT | Air Tchad | HOTEL TANGO | Chad | |
| ARZ | Air Resorts | AIR RESORTS | United States | |
| ASB | Air-Spray 1967 Ltd. | AIR SPRAY | Canada | |
| ASC | Air Star Corporation | AIR STAR | Canada | |
| 4D | ASD | Air Sinai | AIR SINAI | Egypt | |
| AQN | Air Queensland | BUSHAIR | Australia | |
| ARC | Air Routing International Corp. | | United States | |
| QN | ARR | Air Armenia | AIR ARMENIA | Armenia | |
| AG | ABR | Air Contractors | CONTRACT | Ireland | |
| AIL | Air Illinois | AIR ILLINOIS | United States | |
| AI | AIC | Air India Limited | AIRINDIA | India | |
| AIG | Air Inter Gabon | | Gabon | |
| PJ | SPM | Air Saint Pierre | | France | |
| SZ | WOW | Air Southwest | SWALLOW | United Kingdom | |
| ATJ | Air Traffic GmbH | SNOOPY | Germany | |
| 8C | ATN | Air Transport International | AIR TRANSPORT | United States | |
| ATQ | Air Transport Schiphol | MULTI | Netherlands | |
| ATS | Air Transport Service | | Democratic Republic of the Congo | |
| AVG | Air Falcon | DJIBOUTI FALCON | Djibouti | |
| AUX | Air Uganda International Ltd. | | Uganda | |
| NF | AVN | Air Vanuatu | AIR VAN | Vanuatu | |
| ZB | BUB | Air Bourbon | BOURBON | Reunion | defunct |
| CC | ABD | Air Atlanta Icelandic | ATLANTA | Iceland | |
| AIE | Air Inuit | AIR INUIT | Canada | |
| AIS | Air Sureste | SURESTE | Spain | |
| RB | SBK | Air Srpska | Air Srpska | Bosnia and Herzegovina | defunct |
| TN | THT | Air Tahiti Nui | TAHITI AIRLINES | France | |
| SW | NMB | Air Namibia | NAMIBIA | Namibia | |
| NSK | Air Intersalonika | INTERSALONIKA | Greece | |
| NTL | Air Anatolia | AIR ANATOLIA | Turkey | |
| SGA | Air Saigon | AIR SAIGON | Vietnam | |
| AFW | Afrique Regional Airways | AFRAIR | Ivory Coast | |
| ACX | Air Charters | PARAIR | Canada | |
| PE | AEL | Air Europe | AIR EUROPE | Italy | |
| JM | AJM | Air Jamaica | JAMAICA | Jamaica | |
| AWN | Air Niamey | AIR NIAMEY | Niger | |
| AWT | Air West | AIR WEST | Canada | |
| 6G | AWW | Air Wales | RED DRAGON | United Kingdom | |
| TX | FWI | Air Caraïbes | FRENCH WEST | France | |
| IX | AXB | Air India Express | EXPRESS INDIA | India | |
| AXD | Air Express | AIR SUDEX | Sudan | |
| BSB | Air Wings | ARBAS | Moldova | |
| BT | BTI | Air Baltic | AIRBALTIC | Latvia | |
| ANI | Air Atlantic (Nig) Limited | NIGALANTIC | Nigeria | |
| EL | ANK | Air Nippon | ANK AIR | Japan | |
| YW | ANE | Air Nostrum | AIR NOSTRUM | Spain |
| PX | ANG | Air Niugini | NUIGINI | Papua New Guinea | |
| G9 | ABY | Air Arabia | ARABIA | United Arab Emirates | |
| AC | ACA | Air Canada | AIR CANADA | Canada | |
| AP | ADH | Air One | HERON | Italy | |
| MHS | Air Memphis | AIR MEMPHIS | Egypt | |
| XT | AXL | Air Exel | EXEL COMMUTER | Netherlands | |
| AZF | Air Zermatt AG | AIR ZERMATT | Switzerland | |
| UM | AZW | Air Zimbabwe | AIR ZIMBABWE | Zimbabwe | |
| MHU | Air Memphis | MEPHIS UGANDA | Uganda | |
| MKH | Air Marrakech Service | AIR MARRAKECH | Morocco | |
| AZX | Air Max Africa | AZIMA | Gabon | |
| S2 | RSH | Air Sahara | SAHARA | India | |
| ATA | Air Transport Association | | United States | |
| TC | ATC | Air Tanzania | TANZANIA | Tanzania | |
| XAC | Air Charter World | | United States | |
| 2J | VBW | Air Burkina | BURKINA | Burkina Faso | |
| ATH | Air Travel Corp. | AIR TRAVEL | United States | |
| KM | AMC | Air Malta | AIR MALTA | Malta | |
| YT | TGA | Air Togo | AIR TOGO | Togo | defunct |
| ASJ | Air Satellite | SATELLITE | Canada | |
| ASN | Air and Sea Transport | | Russia | |
| ASS | Air Class, S.A. de C.V. | AIR CLASS | Mexico | |
| NPL | Air Nepal International | AIR NEPAL | Nepal | |
| NPR | Air Napier | | New Zealand | |
| WAM | Air Taxi & Cargo | TAXI CARGO | Sudan | |
| RSM | Air Somalia | AIR SOMALIA | Somali Republic | |
| AWZ | AirWest | | Sudan | |
| G4 | AAY | Allegiant Air | ALLEGIANT | United States | |
| AAZ | Angus Aviation | ANGUS | Canada | |
| ABA | Artem-Avia | ARTEM-AVIA | Ukraine | |
| ABB | African Business and Transportations | AFRICAN BUSINESS- | Democratic Republic of the Congo | |
| K5 | ABE | Aban Air | ABAN | Iran | |
| ABF | Aerial Oy | SKYWINGS | Finland | |
| ABG | Abakan-Avia | ABAKAN-AVIA | Russia | |
| M3 | TUS | ABSA - Aerolinhas Brasileiras | ABSA Cargo | Brazil | |
| ABJ | Abaeté Linhas Aéreas | Abaeté | Brazil | |
| ABK | Alberta Citylink | ALBERTA CITYLINK | Canada | |
| ABO | APSA Colombia | AEROEXPRESO | Colombia | |
| ABU | Aerovias Bueno | AEROBUENO | Colombia | |
| ACR | Aerocenter, Escuela de Formacion de Pioltos Privados de Avion | AEROCENTER | Spain | |
| O4 | ABV | Antrak Air | ANTRAK | Ghana | |
| GB | ABX | Airborne Express | ABEX | United States | August 14, 2003 merged into DHL |
| GB | ABX | ABX Air | ABEX | United States | August 15, 2003 Air operations of former Airborne Express |
| ABZ | ATA Brasil | ATA-BRAZIL | Brazil | |
| ACC | Avcard Services | | United Kingdom | |
| ACD | Academy Airlines | ACADEMY | United States | |
| 8V | ACP | Astral Aviation | ASTRAL CARGO | Kenya | | |
| ACY | Atlas Cargo Lines | ATLAS CARGOLINES | Morocco | |
| ADA | Airservices Australia | AUSCAL | Australia | Flight Inspection Unit |
| 4G* | | Advance Leasing Company | | United States | |
| 7A | | Aztec Worldwide Airlines | | United States | |
| 8T | | Air Tindi | | Canadian Territories | |
| ADB | Antonov Airlines | ANTONOV BUREAU | Ukraine | Antonov Design Bureau |
| ADD | Advanced Air Co. | | Japan | |
| ZY | ADE | Ada Air | ADA AIR | Albania | |
| ADG | Aerea Flying Training Organization | AEREA TRAINING | Spain | |
| ADI | Audeli Air | AUDELI | Spain | |
| ADJ | Abicar | ABICAR | Ivory Coast | |
| Z7 | ADK | ADC Airlines | ADCO | Nigeria | |
| ADL | Aero Dynamics | COTSWOLD | United Kingdom | |
| ADM | Aerolineas Dominicanas | DOMINAIR | Dominican Republic | |
| ADN | Aerodienst GmbH | AERODIENST | Germany | |
| ADP | Aerodiplomatic | AERODIPLOMATIC | Mexico | |
| ADY | Aerodyne | AERODYNE | United States | |
| ADQ | Avion Taxi | AIR DATA | Canada | 2695731 Canada Inc. |
| JP | ADR | Adria Airways | ADRIA | Slovenia | |
| ADS | Aviones de Sonora | SONORAV | Mexico | |
| ADU | Airdeal Oy | AIRDEAL | Finland | |
| ADV | Advance Air Charters | ADVANCE | Canada | |
| EM | AEB | Aero Benin | AEROBEN | Benin | |
| AEC | Aerocesar, Aerovias Del Cesar | AEROCESAR | Colombia | |
| AED | Aerotrans Airlines | | Russia | |
| ADX | Anderson Aviation | ANDAX | United States | |
| A3 | AEE | Aegean Airlines | AEGEAN | Greece | |
| AEG | Aerofumigaciones Sam | FUMIGACIONES SAM | Chile | |
| 2K | GLG | Aerogal | AEROGAL | Ecuador | Aerolineas Galapagos SA |
| AEI | Aeroexpreso Interamericano | INTERAM | Colombia | |
| AEJ | Air Express | KHAKI EXPRESS | Tanzania | |
| AEK | Aerocon | AEROCON | Bolivia | |
| AEM | Aero Madrid | AEROMADRID | Spain | |
| AEN | Aeroenlaces Nacionales | | Mexico | |
| AEO | Aeroservicios Ejecutivos Del Occidente | AERO OCCIDENTE | Mexico | |
| AEP | Aerotec | AEROTEC | Spain | |
| KO | AER | Alaska Central Express | ACE AIR | United States | |
| VX | AES | ACES Colombia | ACES | Colombia | defunct |
| AQ | AAH | Aloha Airlines | ALOHA | United States | |
| AAK | Alaska Island Air | ALASKA ISLAND | United States | |
| AA | AAL | American Airlines | AMERICAN | United States | |
| AN | AAA | Ansett Australia | ANSETT | Australia | defunct |
| AAC | Army Air Corps | ARMYAIR | United Kingdom | |
| 5W | AEU | Astraeus | FLYSTAR | United Kingdom | |
| AEV | Aeroventas | AEROVENTAS | Mexico | |
| VV | AEW | Aerosvit Airlines | AEROSVIT | Ukraine | |
| AEX | Airway Express | AVCO | United States | |
| AEZ | Aerial Transit Company | AERIAL TRANZ | United States | |
| AFA | Alfa Air | BLUE ALFA | Czech Republic | |
| WK | AFB | American Falcon | AMERICAN FALCON | Argentina | defunct |
| QQ | UTY | Alliance Airlines | UNITY | Australia | |
| UVS | Air Universal | UNI-LEONE | Sierra Leone | |
| UVT | Auvia Air | AUVIA | Indonesia | |
| AFC | African West Air | AFRICAN WEST | Senegal | |
| AFE | Airfast Indonesia | AIRFAST | Indonesia | |
| FG | AFG | Ariana Afghan Airlines | ARIANA | Afghanistan | |
| AFI | Africaone | AFRICAWORLD | Uganda | |
| AFJ | Alliance | JAMBO | Uganda | |
| AFK | Africa Air Links | AFRICA LINKS | Sierra Leone | |
| SU | AFL | Aeroflot Russian Airlines | AEROFLOT | Russia | |
| AFO | Aero Empresa Mexicana | AERO EMPRESA | Mexico |
|
| AFQ | Alba Servizi Aerotrasporti | ALBA | Italy | |
| AFX | Airfreight Express | | United Kingdom | |
| AFY | Africa Chartered Services | AFRICA CHARTERED | Nigeria | |
| AFZ | Africa Freight Services | AFREIGHT | Zambia | |
| AGA | Aeronaves Del Centro | | Venezuela | |
| AGC | Arab Agricultural Aviation Company | AGRICO | Egypt | |
| AGF | Atlantic Gulf Airlines | ATLANTIC GULF | United States | |
| 5D | SLI | Aerolitoral | COSTERA | Mexico | |
| AGG | Algoma Airways | ALGOMA | Canada | |
| AGH | Altagna | ALTAGNA | France | |
| AGO | Angola Air Charter | ANGOLA CHARTER | Angola | |
| AGP | AERFI Group | AIR TARA | Ireland | |
| AGQ | Aerogala | GALASERVICE | Chile | |
| 1A | AGT | Amadeus Global Travel Distribution | AMADEUS | Spain | |
| AGU | Angara Airlines | SARMA | Russia | |
| AGW | Aero Gambia | AERO GAMBIA | Gambia | |
| JJ | AGX | Aviogenex | GENEX | Serbia | |
| BLR | Atlantic Coast Airlines | BLUE RIDGE | United States | |
| BLZ | Aero Barloz | AEROLOZ | Mexico | |
| PL | PLI | Aeroperú | Aeroperu | Peru | defunct |
| 8A | BMM | Atlas Blue | ATLAS BLUE | Morocco | |
| BNB | Aero Banobras | AEROBANOBRAS | Mexico | |
| AGY | Aero Flight Service | FLIGHT GROUP | United States | |
| AGZ | Agrolet-Mci | AGROLET | Slovakia | |
| GD | AHA | Air Alpha Greenland | AIR ALPHA | Denmark | |
| AHC | Azal Avia Cargo | AZALAVIACARGO | Azerbaijan | Cargo Airline of the State Concern Azerbaijan Hava |
| AHE | Airport Helicopter Basel, Muller & Co. | AIRPORT HELICOPTER | Switzerland | |
| CJE | Aeroservices Corporate | BIRD JET | France | |
| AHF | Aspen Helicopters | ASPEN | United States | |
| AHG | Aerochago Airlines | AEROCHAGO | Dominican Republic | |
| AHH | Airplanes Holdings | AIRHOLD | Ireland | |
| AHP | Aerochiapas | AEROCHIAPAS | Mexico | |
| AHU | ABC Air Hungary | ABC HUNGARY | Hungary | |
| HT | AHW | Aeromist-Kharkiv | AEROMIST | Ukraine | |
| J2 | AHY | Azerbaijan Airlines | AZAL | Azerbaijan | |
| U3 | AIA | Avies | AVIES | Estonia | |
| AP | AIB | Airbus Industrie | AIRBUS INDUSTRIE | France | |
| AIH | Alpine Air Chile | ALPINE CHILE | Chile | |
| AIJ | ABC Aerolineas | ABC AEROLINEAS | Mexico | |
| AIK | African Airlines International Limited | AFRICAN AIRLINES | Kenya | |
| AIN | African International Airways | FLY CARGO | Swaziland | |
| 5A | AIP | Alpine Air Express | ALPINE AIR | United States | |
| AIU | Alicante Internacional Airlines | ALIA | Spain | |
| ABP | Aba Air | BAIR | Czech Republic | |
| ED | ABQ | Airblue | PAKBLUE | Pakistan | |
| THM | Airmark Aviation | THAI AIRMARK | Thailand | |
| AIR | Airlift International | AIRLIFT | United States | |
| AIT | Airest | | Estonia | |
| AIV | Airvias S/A Linhas Aereas | AIRVIAS | Brazil | |
| W4 | BES | Aero Services Executive | BIRD EXPRESS | France | |
| AIW | Atlantic Island Airways | TARTAN | Canada | |
| AIX | Aircruising Australia | CRUISER | Australia | |
| AIY | Aircrew Check and Training Australia | AIRCREW | Australia | |
| IZ | AIZ | Arkia Israel Airlines | ARKIA | Israel | |
| AJA | A J Services | AYJAY SERVICES | United Kingdom | |
| AJB | Aero JBR | AERO JBR | Mexico | |
| AJE | Aero Jet Express | JET EXPRESS | Mexico | |
| AJF | Avia Consult Flugbetriebs | AVIACONSULT | Austria | |
| AJI | Ameristar Jet Charter | AMERISTAR | United States | |
| AJJ | A2 Jet Leasing | ATLANTIC JET | United States | |
| AJK | Allied Air | BAMBI | Nigeria | |
| AJO | Aeroejecutivo | AEROEXO | Mexico | |
| AJP | Aero Jets Corporativos | AEROJETS | Mexico | |
| AJS | Aeroejecutivos Colombia | AEROEJECUTIVOS | Colombia | Aeroejecutivos Aeroservicios Ejecutivos |
| M6 | AJT | Amerijet International | AMERIJET | United States | |
| AJV | ANA & JP Express | AYJAY CARGO | Japan | |
| AJW | Alpha Jet International | ALPHAJET | United States | |
| AJY | Ajet | AYJET | Cyprus | |
| AKB | Aktjubavia | KARAB | Kazakhstan | |
| AKC | Arca Aerovias Colombianas Ltda. | ARCA | Colombia | |
| AKF | Anikay Air Company | ANIKAY | Kyrgyzstan | |
| AKH | Akhal | AKHAL | Turkmenistan | |
| MNI | Aeromilenio | AEROMIL | Mexico | |
| AKK | Aklak Air | AKLAK | Canada | |
| 4A | AKL | Air Kiribati | | Kiribati | |
| AKN | Alkan Air | ALKAN AIR | Canada | |
| AKW | Angkor Airways | ANGKORWAYS | Cambodia | |
| AKZ | AK Navigator LLC | ABSOLUTE | Kazakhstan | |
| ALB | Aero Albatros | ALBATROS | Mexico | |
| ALD | Albion Aviation | ALBION | United Kingdom | |
| ALE | Aeroalas Colombia | AEROALAS | Colombia | |
| ALF | Allied Command Europe (Mobile Force) | ACEFORCE | Belgium | |
| BTS | Aerotaxis Albatros | AEROLINEAS ALBATROS | Mexico | |
| FYS | American Flyers | AMERICAN FLYERS | United States | |
| DFA | Aero Coach Aviation | AERO COACH | United States | |
| CAA | Atlantic Southeast Airlines | Chandler | United States | Old codes |
| BVR | ACM Air Charter | BAVARIAN | Germany | |
| ALG | Air Logistics | AIRLOG | United States | |
| ALL | Aerovallarta | VALLARTA | Mexico |
|
| HP | AWE | America West Airlines | CACTUS | United States | |
| TNO | Aerotransporte de Carga Union | AEROUNION | Mexico | |
| TND | Aero Taxis Cessna | TAXIS CESSNA | Mexico | |
| TMP | Arizona Express Airlines | TEMPE | United States | |
| ALO | Allegheny Commuter Airlines | ALLEGHENY | United States | USAirways Express |
| ALP | Alpliner AG | ALPINER | Switzerland | |
| ALQ | Altair Aviation (1986) | ALTAIR | Canada | |
| ALV | Alas de Venezuela | ALVEN | Venezuela | |
| ALW | Alas Nacionales, S.A. | ALNACIONAL | Dominican Republic | |
| ALY | Alyeska Air Service | ALYESKA | United States | |
| ALZ | Alta Flights (Charters) Ltd. | | Canada | |
| AMA | ATMA | ADIK | Kazakhstan | |
| AMD | Aerolineas Medellin | AEROLINEAS MEDELLIN | Colombia | |
| AMF | Ameriflight | AMFLIGHT | United States | |
| AMH | Alan Mann Helicopters Ltd. | MANN | United Kingdom | |
| AMJ | Aviation Amos | AVIATION AMOS | Canada | |
| AMK | Amerer Air | AMER AIR | Austria | |
| AMM | Aeroputul International Marculesti | AEROM | Moldova | |
| AMP | Aero Transporte S.A. (ATSA) | ATSA | Peru | |
| AMQ | Aeromedicare Ltd. | LIFELINE | United Kingdom | |
| TZ | AMT | ATA Airlines | AMTRAN | United States | |
| AMV | AMC Airlines | | Egypt | Aircraft Maintenance Company |
| AM | AMX | Aeroméxico | AEROMEXICO | Mexico | |
| AMZ | Amiya Airline | AMIYA AIR | Nigeria | |
| ANC | Anglo Cargo | ANGLO | United Kingdom | |
| BRP | Airport Bratsk | AEROBRA | Russia | |
| ANH | Alajnihah for Air Transport | ALAJNIHAH | Libya | |
| ANM | Antares Airtransport, Maintenance & Service GmbH | ANTARES | Germany | |
| TL | ANO | Airnorth | TOPEND | Australia | |
| ANQ | Aerolínea de Antioquia | ANTIOQUIA | Colombia | |
| ANS | Andes Lineas Aereas | AEROANDES | Argentina | |
| IW | AOM | AOM French Airlines | French Lines | France | defunct |
| ANW | Aviacion Del Noroeste, S.A. de C.V. | AVINOR | Mexico | |
| SAP | Avia Jaynar | TOBOL | Kazakhstan | |
| EMS | Aero Servicios Empresariales | SERVIEMPRESARIAL | Mexico | |
| AOA | Alcon Servicios Aereos, S.A. de C.V. | ALCON | Mexico | |
| J6 | AOC | AVCOM | AERO AVCOM | Russia | |
| AOD | Aero Vodochody | AERO CZECH | Czech Republic | |
| AOF | Atair Pty Ltd. | ATAIR | South Africa | |
| 2D | AOG | Aero VIP | AVIP | Argentina | |
| MUN | Aeromundo Ejecutivo | AEROMUNDO | Mexico | |
| MUR | Aerolinea Muri | MURI | Mexico | |
| AOI | Astoria, Inc. | ASTORIA | Canada | defunct |
| NRO | Aero Rent JSC | AEROMASTER | Russia | |
| NRP | Aeronord-Grup | AERONORD | Moldova | |
| AOK | Aeroatlantico Colombia | | Colombia | |
| AOL | Angkor Airlines | ANGKOR AIR | Cambodia | |
| AON | Aero Entreprise | AERO ENTERPRISE | France | |
| AOO | As, Opened Joint Stock Company | COMPANY AS | Ukraine | |
| AOP | Aeropiloto | AEROPILOTO | Portugal | |
| VIV | Aeroenlaces Nacionales | AEROENLACES | Mexico | |
| VIZ | Aerovis Airlines | AEROVIZ | Ukraine | |
| VJE | AvJet Routing | | United Arab Emirates | |
| VGF | Aerovista Gulf Express | VISTA GULF | United Arab Emirates | |
| VER | Almaver | ALMAVER | Mexico | |
| AOR | Afro International Ent. Limited | INTER-AFRO | Nigeria | |
| SMX | Alitalia Express | ALIEXPRESS | Italy | |
| OE | AOT | Asia Overnight Express | ASIA OVERNIGHT | Philippines | |
| AOV | Aero Vision | AEROVISION | France | |
| AOX | Aerotaxi Del Valle | AEROVALLE | Colombia | |
| APC | Airpac Airlines, Inc. | AIRPAC | United States | |
| SVM | Aeroservicios Monterrey | SERVIMONTE | Mexico | |
| APF | Amapola Flyg AB | AMAPOLA | Sweden | |
| APH | Alpha Aviation, Inc. | AIRFLIGHT | United States | |
| API | ASA Pesada, Lda. | ASA PESADA | Angola | |
| APJ | Air Print, S.A. | AIR PRINT | Luxembourg | |
| BJK | Atlantic Airlines | BLACKJACK | United States | |
| PET | Aerotransporte Petrolero | AEROPETRO | Colombia | |
| GV | ARF | Aero Flight | Aero Fox | Germany | |
| BJT | ACM Aviation | BAY JET | United States | |
| BKL | Aircompany Barcol | BARCOL | Russia | |
| BLA | All Charter Limited | ALL CHARTER | United Kingdom | |
| APL | Appalachian Flying Service, Inc. | APPALACHIAN | United States | |
| APM | Airpac, Inc. | ALASKA PACIFIC | United States | |
| APO | Aeropro | AEROPRO | Canada | |
| APP | Aerolineas Pacifico Atlantico, S.A. (Apair) | AEROPERLAS | Panama | |
| APQ | Aspen Aviation | ASPEN BASE | United States | |
| APU | Aeropuma, S.A. | AEROPUMA | El Salvador | |
| JW | APW | Arrow Air | BIG A | United States | |
| APX | Apex Air Cargo | PARCEL EXPRESS | United States | |
| APY | APA Internacional | APA INTERNACIONAL | Dominican Republic | |
| AQA | Aeroatlas, S.A. | ATCO | Colombia | |
| AQL | Aquila Air Ltd. | AQUILA | Canada | |
| AQO | Aluminum Company Of America | ALCOA SHUTTLE | United States | Alcoa Aircraft Operations |
| AQT | Aviones de Renta de Quintana Roo, S.A. de C.V. | AVIOQUINTANA | Mexico | |
| AQU | AirQuarius Aviation | QUARIUS | South Africa | |
| AQZ | Aerodyne Charter Company | QUANZA | United States | |
| ARA | Arik Air | ARIK AIR | Nigeria | |
| ARB | Avia Air N.V. | AVIAIR | Aruba | |
| 2B | ARD | Aerocondor | AEROCONDOR | Portugal | |
| 4C | ARE | Aires, Aerovias de Integracion Regional, S.A. | AIRES | Colombia | |
| AR | ARG | Aerolineas Argentinas | ARGENTINA | Argentina | |
| ARH | Arrowhead Airways | ARROWHEAD | United States | |
| ARI | Aero Vics | AEROVICS | Mexico | |
| ARJ | Aerojet de Costa Rica, S.A. | | Costa Rica | |
| SUN | Antillana De Navegacion Aerea | | Dominican Republic | |
| SUO | Aeroservicios De San Luis | SERVICIO SANLUIS | Mexico | |
| SUP | Aerosuper | AEROSUPER | Mexico | |
| ARK | Aero Link Air Services S.L. | LINK SERVICE | Spain | |
| ARL | Airlec - Air Aquitaine Transport | AIRLEC | France | |
| ARM | Aeromarket Express | AMEX | Spain | |
| ARO | Arrow Aviation Ltd. | ARROW | Canada | |
| KLD | Air Klaipeda | AIR KLAIPEDA | Lithuania | |
| ARQ | Armstrong Air, Inc. | ARMSTRONG | Canada | |
| ARS | Aeromet Servicios | METSERVICE | Chile | |
| ART | Aerotal Aerolineas Territoriales de Colombia Ltda | AEROTAL | Colombia | |
| ARV | Aravco Ltd. | ARAVCO | United Kingdom | |
| ARW | Aria | ARIABIRD | France | |
| OST | Airline Alania | ALANIA | Russia | |
| HUC | Aerloineas de Techuacan | LINEAS TEHUACAN | Mexico | |
| HUT | Aerotransportes Huitzilin | AEROHUITZILIN | Mexico | |
| HUY | Aero Transportes Del Humaya | AERO HUMAYA | Mexico | |
| ARY | Argosy Airways | GOSEY | United States | |
| AS | ASA | Alaska Airlines, Inc. | ALASKA | United States | |
| PL | ASE | Airstars | MOROZOV | Russia | |
| ASF | Air Schefferville, Inc. | SCHEFF | Canada | |
| ASG | African Star Airways (PTY) Ltd. | AFRICAN STAR | South Africa | |
| ASI | Aerosun International, Inc. | AEROSUN | United States | |
| ASM | Awesome Flight Services (PTY) Ltd. | AWESOME | South Africa | |
| ASO | Aero Slovakia | AERO NITRA | Slovakia | |
| ASP | Airsprint | AIRSPRINT | Canada | |
| EV | ASQ | Atlantic Southeast Airlines | ACEY | United States | |
| ASR | All Star Airlines, Inc. | ALL STAR | United States | |
| AST | Aerlineas Del Oeste | AEROESTE | Mexico | |
| NRE | Aviones Are | AVIONES ARE | Mexico | |
| WAP | Arrow Panama | ARROW PANAMA | Panama | |
| ASV | Astravia-Bissau Air Transports Ltd. | ASTRAVIA | Guinea-Bissau | |
| OB | ASZ | Astrakhan Airlines | AIR ASTRAKHAN | Russia | |
| ATB | Atlantair Ltd. | STARLITE | Canada | |
| ATD | Aerotours Dominicana | AEROTOURS | Dominican Republic | |
| ATE | Atlantis Transportation Services, Ltd. | ATLANTIS CANADA | Canada | |
| ATG | Aerotrans Airline | BACHYT | Kazakhstan | |
| HC | ATI | Aero-Tropics Air Services | | Australia | |
| ATK | AeroTACA | AEROTACA | Colombia | Aerotaxi Casanare |
| ATL | Aerocentral | CENTRALMEX | Mexico | |
| FO | ATM | Airlines of Tasmania | AIRTAS | Australia | |
| CPV | Air Corporate | AIRCORPORATE | Italy | |
| ATP | ASTRAL Colombia - Aerotransportes Especiales Ltda. | ASTRAL | Colombia | |
| FEO | Aeroferinco | FERINCO | Mexico | |
| FES | Aero Taxis Y Servicios Alfe | AERO ALFE | Mexico | |
| FFA | Avialesookhrana | AVIALESOOKHRANA | Russia | |
| FFB | Africair Service | FOXTROT FOXTROT | Senegal | |
| ATR | Atlas Airlines | ATLAS-AIR | United States | |
| ATT | Aer Turas | AERTURAS | Ireland | |
| ATU | Atlant Aerobatics Ltd. | ATLANT HUNGARY | Hungary | |
| ATV | Avanti Air | AVANTI AIR | Germany | |
| ATW | Aero Trades (Western) Ltd. | AERO TRADES | Canada | |
| OS | AUA | Austrian Airlines | AUSTRIAN | Austria | |
| IQ | AUB | Augsburg Airways | AUGSBURG-AIR | Germany | |
| TUP | Aviastar-Tu | TUPOLEVAIR | Russia | |
| RU | ABW | AirBridge Cargo | AIRBRIDGE CARGO | Russia | Former IATA: BO |
| TUR | ATUR | | Ecuador | |
| TXU | ATESA Aerotaxis Ecuatorianos | ATESA | Ecuador | |
| TXX | Austin Express | COWBOY | United States | |
| AUD | Audi Air, Inc. | AUDI AIR | United States | |
| AUF | Augusta Air Luftfahrtunternehmen | AUGUSTA | Germany | |
| MO | AUH | Abu Dhabi Amiri Flight | SULTAN | United Arab Emirates | |
| 5N | AUL | Aeroflot-Nord | DVINA | Russia | |
| AUM | Air Atlantic Uruguay | ATLAMUR | Uruguay | |
| AUN | Aviones Unidos | AVIONES UNIDOS | Mexico | |
| AUP | Avia Business Group | | Russia | |
| SVE | Aero Servicios Expecializados | AEROESPECIAL | Mexico | |
| GR | AUR | Aurigny Air Services | AYLINE | United Kingdom | |
| NO | AUS | Aus-Air | | Australia | |
| AU | AUT | Austral Lineas Aereas | AUSTRAL | Argentina | |
| AUU | Aurora Aviation, Inc. | AURORA AIR | United States | |
| AUY | Aerolineas Uruguayas, S.A. | AUSA | Uruguay | |
| AO | AUZ | Australian Airlines | AUSTRALIAN | Australia | Subsidiary merged with QANTAS |
| AV | AVA | Avianca - Aerovias Nacionales de Colombia, S.A. | AVIANCA | Colombia | |
| AVB | Aviation Beaufort | BEAUPAIR | United Kingdom | |
| AVD | Alamo Aviacion, S.L. | ALAMO | Spain | |
| AVF | Aviair Aviation Ltd. | CARIBOO | Canada | |
| AVH | AV8 Helicopters | KENT HELI | United Kingdom | |
| AVJ | Avia Traffic Company | ATOMIC | Kyrgyzstan | |
| AVK | AV8 Helicopters | AVIATE-COPTER | South Africa | |
| AVM | Aviacion Ejecutiva Mexicana, S.A. | AVEMEX | Mexico | |
| AVO | Aviation at Work | AVIATION WORK | South Africa | |
| AVP | Avcorp Registrations | AVCORP | United Kingdom | |
| LFP | Alfa Aerospace | ALFA-SPACE | Australia | |
| LFR | Atlantic Airfreight Aviation | LANFREIGHT | São Tomé and Príncipe | |
| LFT | Aerolift Company | LIFTCO | Sierra Leone | |
| AVQ | Aviation Services, Inc. | AQUILINE | United States | |
| AVR | Active Aero Charter, Inc. | ACTIVE AERO | United States | |
| AVS | Avialsa T-35 | AVIALSA | Spain | |
| AVT | Asia Avia Airlines | ASIAVIA | Indonesia | |
| AVU | Avia Sud Aérotaxi | AVIASUD | France | |
| AVV | Airvantage Incorporated | AIRVANTAGE | United States | |
| AVW | Aviator Airways | AVIATOR | Greece | |
| AVX | Aviapaslauga | PASLAUGA | Lithuania | |
| XXX | ASL | | Belgium | |
| YRG | Air Yugoslavia | YUGAIR | Serbia | |
| K8 | ZAK | Airlink Zambia | | Zambia | Zambia Skyways Limited |
| ZZM | Agence Nationale des Aerodromes et de la Meteorologie | | Ivory Coast | |
| BGA | Airbus Transport International | BELOUGA | France | |
| B9 | BGD | Air Bangladesh | AIR BANGLA | Bangladesh | |
| BGF | Aviodetachment-28 | BULGARIAN | Bulgaria | |
| BGG | Aero BG | AERO BG | Mexico | |
| BHC | Aerotaxis De La Bahia | BAHIA | Mexico | |
| BIV | Aviaservice | AVIASERVICE | Georgia | |
| SZA | Aerolineas De El Salvador | AESA | El Salvador | |
| AVY | Aerovaradero, S.A. | AEROVARADERO | Cuba | |
| AWB | Airways International, Inc. | AIRNAT | United States | |
| AWK | Airwork | AIRWORK | New Zealand | |
| AWL | Australian Wetleasing | AUSSIEWORLD | Australia | |
| AWO | Awood Air Ltd. | AWOOD AIR | Canada | |
| AWR | Arctic Wings And Rotors Ltd. | ARCTIC WINGS | Canada | |
| ISM | Auo Airclub AIST-M | STORK | Russia | |
| AWS | Arab Wings | ARAB WINGS | Jordan | |
| AWV | Airwave Transport, Inc. | AIRWAVE | Canada | |
| AWY | Aeroway, S.L. | AEROWEE | Spain | |
| HJ | AXF | Asian Express Airlines | FREIGHTEXPRESS | Australia | |
| AXH | Aeromexhaga | AEROMEXHAGA | Mexico | |
| AXI | Aeron International Airlines, Inc. | AIR FREIGHTER | United States | |
| AXK | African Express Airways | EXPRESS JET | Kenya | |
| AK | AXM | AirAsia | ASIAN EXPRESS | Malaysia | |
| D7 | XAX | Airasia X | XANADU | Malaysia | |
| AXN | Alexandair | ALEXANDROS | Greece | |
| AXP | Aeromax | AEROMAX SPAIN | Spain | |
| AXQ | Action Airlines (Action Air Charter) | ACTION AIR | United States | |
| BNI | Alberni Airways | ALBERNI | Canada | |
| BNZ | Aerolineas Bonanza | AERO BONANZA | Mexico | |
| BOC | Aerobona | AEROBONA | Mexico | |
| BOI | Aboitiz Air | ABAIR | Philippines | |
| AXR | Axel Rent, S.A. | RENTAXEL | Mexico | |
| AXS | Altus Airlines | ALTUS | United States | |
| AXV | Aviaxess | AXAVIA | France | |
| AXX | Avioimpex A.D.p.o. | IMPEX | Macedonia | |
| 6V | AXY | Axis Airways | AXIS | France | |
| AYD | Aladia Airlines | AIRLINES ALADIA | Mexico | |
| AYK | Aykavia Aircompany | | Armenia | |
| AYM | Airman, S.L. | AIRMAN | Spain | |
| AYN | Atlantic Airlines, S.A. | ATLANTIC NICARAGUA | Nicaragua | |
| AYS | Awsaj Aviation Services | | Libya | |
| AYT | Ayeet Aviation & Tourism | AYEET | Israel | |
| 3G | AYZ | Atlant-Soyuz Airlines | ATLANT-SOYUZ | Russia | |
| AZ | AZA | Alitalia | ALITALIA | Italy | |
| AZB | Azamat | TUMARA | Kazakhstan | |
| ZE | AZE | Arcus-Air Logistic | ARCUS AIR | Germany | |
| AZK | Azalhelikopter | AZALHELICOPTER | Azerbaijan | |
| AZL | Africa One | SKY AFRICA | Zambia | |
| AZM | Aerocozumel | AEROCOZUMEL | Mexico | |
| Z8 | AZN | Amaszonas | | Bolivia | |
| AZP | Arizona Pacific Airways | ARIZONA PACIFIC | United States | |
| AZS | Aviacon Zitotrans Air Company | ZITOTRANS | Russia | |
| AZT | Azimut, S.A. | AZIMUT | Spain | |
| AZV | Azov Avia Airlines | AZOV AVIA | Ukraine | Asov-Avia, Aircompany |
| MHC | Aero Jomacha | AERO JOMACHA | Mexico | |
| AZY | Arizona Airways, Inc. | ARIZAIR | United States | |
| AZZ | Azza Transport | AZZA TRANSPORT | Sudan | |
| NAR | Air Continental Inc | NIGHT AIR | United States | |
| NAU | Antanik-Air | ANTANIK | Ukraine | |
| NER | Air Newark | NEWAIR | United States | |
| NFF | Aircraft Support and Services | | Lebanon | |
| OBA | Aerobanana | AEROBANANA | Mexico | |
| OBK | Amako Airlines | AMAKO AIR | Nigeria | |
| R7 | OCA | Aserca Airlines | AROSCA | Venezuela | |
| NFS | Afrique CArgo Service Senegal | | Senegal | |
| NGC | Angoservice | ANGOSERVICE | Angola | |
| NGE | Angel Airlines | ANGEL AIR | Thailand | |
| NGF | Angel Flight America | ANGEL FLIGHT | United States | |
| OUL | Air Atonabee | CITY EXPRESS | Canada | |
| OVA | Aero Nova | AERONOVA | Spain | |
| XPE | Amira Air | EXPERT | Austria | |
| XSS | Aero Express Intercontinental | INTER EXPRESS | Mexico | |
| XTJ | Advance Aviation Services | | United States | |
| TLR | Air Libya Tibesti | AIR LIBYA | Libya | |
| OVC | Aerovic | | Ecuador | |
| RVE | Airventure | AIRVENTURE | Belgium | |
| RVI | Aero Servicios | AERO SERVICIOS | Mexico | |
| RVL | Airvallee | AIR VALLEE | Italy | |
| OVE | Aeromover | AEROMOVER | Mexico | |
| OVI | Aerovias Ejecutivas | VIAS EJECUTIVAS | Mexico | |
| PTD | Aero Servicio Pity | PITY | Mexico | |
| PTE | Aero Copter | | Mexico | |
| PLL | Air Pal | AIRPAL | Spain | Escuela De Pilots |
| PLM | Air Pullmantur | PULLMANTUR | Spain | |
| RX | AEH | Aviaexpress | AVEX | Hungary | |
| PSG | Aviones Para Servirle | SERVIAVIONES | Mexico | |
| SLU | Avio Sluzba | AVIO SLUZBA | Serbia | |
| SCU | Air Scorpio | SCORPIO UNIVERS | Bulgaria | |
| SIP | Air Spirit | AIR SPIRIT | United States | |
| BMV | Alatau Airlines | OLIGA | Kazakhstan | |
| GUG | Aviateca | AVIATECA | Guatemala | |
| PXX | Aroostook Aviation | PINE STATE | United States | |
| PYC | Aeropycsa | AEROPYCSA | Mexico | |
| PVK | Association of Private Pilots of Kazakhstan | BORIS | Kazakhstan | |
| BAH | The Amiri Flight | BAHRAIN | Bahrain | |
| BAS | Aero Services | AEROSERV | Barbados | |
| BBE | Ababeel Aviation | BABEL AIR | Sudan | |
| BBT | Air Bashkortostan | AGYDAL | Russia | |
| MCY | Ambulance Air Africa | MERCY | South Africa | |
| MQ | EGF | American Eagle Airlines | EAGLE FLIGHT | United States | |
| PUE | Aeropuelche | PUELCHE | Chile | |
| PUT | Aeroput | | Serbia | |
| ZS | AZI | Azzurra Air | AZZURRA | Italy | defunct |
| FF | | Airshop | | Netherlands | |
| ML | | African Transport Trading and Investment Company | | Sudan | |
| VUE | AD Aviation | FLIGHTVUE | United Kingdom | |
| XCT | Aero Costa Taxi Aereo | AEROCOSTAXI | Mexico | |
| VRO | Aerovitro | AEROVITRO | Mexico | |
| VRI | Aerotaxi Villa Rica | VILLARICA | Mexico | |
| VEG | Aerovega | AEROVEGA | Mexico | |
| VVG | Aerovilla | AEROVILLA | Colombia | |
| VLR | Aerolineas Villaverde | VILLAVERDE | Mexico | |
| WIL | Aero Air | WILLIAMETTE | United States | |
| VEJ | Aero Ejecutivos | VENEJECUTIV | Venezuela | |
| WAB | Aero Industries Inc | WABASH | United States | |
| VNG | Aero Servicios Vanguardia | VANGUARDIA | Mexico | |
| VAD | Aero Taxi Los Valles | VALLES | Spain | |
| VMR | Aero Vilamoura | AERO VILAMOURA | Portugal | |
| VLS | Aero Virel | VIREL | Mexico | |
| XAA | Aeronautical Radio Inc | | United States | |
| VUO | Aerovuelox | AEROVUELOX | Mexico | |
| VTM | Aeronaves TSM | AERONAVES TSM | Mexico | |
| VU | VUN | Air Ivoire | AIRIVOIRE | Ivory Coast | |
| BP | BOT | Air Botswana | BOTSWANA | Botswana | |
| XPR | Air-Rep | | United States | |
| XLL | Air Excel | TINGA-TINGA | Tanzania | |
| VAE | Air Evans | AIR-EVANS | Spain | Ecuela de Pilotos Privados |
| WHY | Air Sorel | AIR SOREL | Canada | |
| WDR | Air Net Private Charter | WIND RIDER | United States | |
| XEC | Air Executive Charter | | Germany | |
| GS | UPA | Air Foyle | FOYLE | United Kingdom | |
| VTY | Air Midwest | VICTORY | Nigeria | |
| VT | VTA | Air Tahiti | AIR TAHITI | French Polynesia | |
| 3N | URG | Air Urga | URGA | Ukraine | |
| VDR | Air Vardar | VARDAR | Macedonia | |
| VL | VIM | Air VIA | | Bulgaria | |
| WLR | Air Walser | AIRWALSER | Italy | |
| URA | Aircompany Rosavia | ROSAVIA | Ukraine | |
| XLB | Aircraft Performance Group | | United States | |
| WLA | Airwaves Airlink | AIRLIMITED | Zambia | |
| XFX | Airways Corporation of New Zealand | AIRCORP | New Zealand | |
| WAY | Airways | GARONNE | France | |
| WGS | Airwings oy | AIRWINGS | Finland | |
| XAK | Airkenya | SUNEXPRESS | Kenya | |
| WPK | Air-Lift Associates | WOLFPACK | United States | |
| VAB | Airtrans Ltd | | Russia | |
| URP | ARP 410 Airlines | AIR-ARP | Ukraine | |
| WPR | Auckland Regional Rescue Helicopter Trust | WESTPAC RESCUE | New Zealand | |
| URR | Aurora Airlines | AIR AURORA | Slovenia | |
| UST | Austro Aereo | AUSTRO AEREO | Ecuador | |
| WLT | Aviation Partners | WINGLET | United States | |
| VLV | Avialift Vladivostok | VLADLIFT | Russia | |
| VME | Aviacion Comercial de America | AVIAMERICA | Mexico | |
| VVA | Aviast Air | IALSI | Russia | |
| WLV | Aviation North | WOLVERINE | United States | |
| FK | WTA | Africa West | WEST TOGO | Togo | |
| VNT | Avient Air Zambia | AVIENT | Zambia | |
| VZR | Aviazur | IAZUR | France | |
| VID | Aviaprad | AVIAPRAD | Russia | |
| G2 | VXG | Avirex | AVIREX-GABON | Gabon | |
| VXX | Aviaexpress Aircompany | EXPRESSAVIA | Ukraine | |
| XAM | AMR Services Corporation | ALLIANCE | United States | |
| XAO | Airline Operations Services | | United States | |
| VAZ | Airlines 400 | REMONT AIR | Russia | |
| V8 | VAS | ATRAN Cargo Airlines | ATRAN | Russian Federation | |
| VAM | Ameravia | AMERAVIA | Uruguay | |
| VAV | Angkor Air | AIR ANGKOR | Cambodia | |
| VBC | AVB-2004 Ltd | AIR VICTOR | Bulgaria | |
| XKX | ASECNA | | France | |
| XAT | AT and T Aviation Division | | United States | |
| VAI | Avalair | AIR AVALAIR | Serbia | |
| VRT | Averitt Air Charter | AVERITT | United States | |
| VE | AVE | Avensa | Avensa | Venezuela | |
| V5 | VLI | Avolar Aerolineas | AEROVOLAR | Mexico | |
| VSA | Avstar Aviation | STARBIRD | South Africa | |
| VSC | AVESCA | AVESCA | Colombia | |
| XAV | Aviaprom Enterprises | AVIAPROM | Russia | |
| VTT | Avia Trans Air Transport | VIATRANSPORT | Sudan | |
| VSR | Aviostart AS | AVIOSTART | Bulgaria | |
| VTG | Aviacao Transportes Aereos e Cargas | ATACARGO | Angola | |
| XJA | Assistance Aeroportuaire de L'Aeroport de Paris | | France | |
| XFS | American Flight Service Systems | | United States | |
| XXV | AASANA | | Bolivia | |
| XME | Australian air Express | AUS-CARGO | Australia | |
| XMG | AMS Group | | Russia | |
| CAJ | Air Caraibes Atlantique | CAR LINE | France | |
| CAO | Air China Cargo | AIRCHINA FREIGHT | China | |
| CBE | Aerovias Caribe | AEROCARIBE | Mexico | |
| CBO | Aerotaxi del Cabo | TAXI CABO | Mexico | |
| CBS | Air Columbus | AIR COLUMBUS | Ukraine | |
| CBV | Aero Cabo | CABOAEREO | Mexico | |
| CA | CCA | Air China | AIR CHINA | China | |
| CDA | Aerocardal | CARDAL | Chile | |
| Q6 | CDP | Aero Condor Peru | CONDOR-PERU | Peru | |
| CDU | Aerotrans | | Russia | |
| CDV | Airline Skol | SKOL | Russia | |
| CFF | Aerofan | AEROFAN | Spain | |
| CFM | ACEF | ACEF | Portugal | Transportes Aereos e Cargas |
| CFR | Africa One | | Democratic Republic of the Congo | |
| CFV | Aero Calafia | CALAFIA | Mexico | |
| CGB | Air Cargo Belize | CARGO BELIZE | Belize | |
| CGV | Aero Clube Do Algarve | CLUBE ALGARVE | Portugal | |
| CGW | Air Great Wall | CHANGCHENG | China | |
| CHJ | Aircompany Chaika | AIR CHAIKA | Ukraine | |
| CHR | Air Charter Services | ZAIRE CHARTER | Democratic Republic of the Congo | |
| CHV | Air Charter Professionals | CHARTAIR | United States | |
| CID | Asia Continental Airlines | ACID | Kazakhstan | |
| 5F | CIR | Arctic Circle Air Service | AIR ARCTIC | United States | |
| CKL | Aviation Charter Services | CIRCLE CITY | United States | |
| CLL | Aerovias Castillo | AEROCASTILLO | Mexico | |
| CLP | Aero Club De Portugal | CLUB PORTUGAL | Portugal | |
| CMF | Air Care Alliance | COMPASSION | United States | |
| CND | Aero Continente Dominicana | CONDOMINICANA | Dominican Republic | |
| CNE | Air Toronto | CONNECTOR | Canada | |
| CNH | Aquila Air | CHENANGO | United States | |
| CNU | Air Consul | AIR CONSUL | Spain | |
| CNX | Allcanada Express | CANEX | Canada | |
| CPF | ATS Private Company | TECHSERVICE | Ukraine | |
| QC | CRD | Air Corridor | AIR CORRIDOR | Mozambique | |
| NV | CRF | Air Central | AIR CENTRAL | Japan | |
| CRJ | Air Cruzal | AIR CRUZAL | Angola | |
| CRP | Aerotransportes Corporativos | AEROTRANSCORP | Mexico | |
| CRQ | Air Creebec | CREE | Canada | |
| CTA | Aero Charter and Transport | CHAR-TRAN | United States | |
| CTE | Air Tenglong | TENGLONG | China | |
| CTR | Aerlineas Centauro | CENTAURO | Mexico | |
| CUO | Aerocuahonte | CUAHONTE | Mexico | |
| CV | CVA | Air Chathams | CHATHAM | New Zealand | |
| CW | CWM | Air Marshall Islands | AIR MARSHALLS | Marshall Islands | |
| CWP | Australian Customs Service | COASTWATCH | Australia | |
| CYL | Air One Cityliner | CITYLINER | Italy | |
| CYO | Air Transport | COYOTE | United States | |
| ZA | CYD | Access Air | CYCLONE | United States | defunct |
| CYE | Aerocheyenne | AEROCHEYENNE | Mexico | |
| AH | DAH | Air Algérie | AIR ALGERIE | Algeria | |
| DAP | Aerovias DAP | DAP | Chile | |
| DBA | Air Alpha | DOUBLE-A | United States | |
| DBD | Air Niagara Express | AIR NIAGARA | Canada | |
| DEF | Aviation Defense Service | TIRPA | France | |
| DEG | Air Service Groningen | DEGGER | Netherlands | |
| KI | DHI | Adam Air | ADAM SKY | Indonesia | |
| ER | DHL | Astar Air Cargo | D-H-L | United States | DHL |
| DHM | Archer Aviation | ARCHER | United Kingdom | |
| DIC | Aeromedica | AEROMEDICA | Mexico | |
| DIN | Aerodin | AERODIN | Mexico | |
| HO | DJA | Antinea Airlines | ANTINEA | Algeria | |
| DJU | Air Djibouti | AIR DJIB | Djibouti | |
| EN | DLA | Air Dolomiti | DOLOMOTI | Italy | |
| DLS | Aero Modelo | AEROMODELO | Mexico | |
| DLU | Aerolineas Del Sur | DEL SUR | Chile | |
| DMC | Aerodinamica de Monterrey | DINAMICAMONT | Mexico | |
| DMI | Aeroservicios Dinamicos | AERODINAMICO | Mexico | |
| DML | Aerotaxis Dosmil | | Mexico | |
| DNA | Aerodespachos De El Salvador | AERODESPACHOS | El Salvador | |
| DNC | Aerodynamics Málaga | FLYINGOLIVE | Spain | |
| DNJ | Aerodynamics Incorporated | DYNAJET | United States | |
| D9 | DNV | Aeroflot-Don | DONAVIA | Russia | |
| NM | DRD | Air Madrid | ALADA AIR | Spain | |
| DRM | Airways Flight Training | DARTMOOR | United Kingdom | |
| DRO | Aeronaves Del Noreste | AERONORESTE | Mexico | |
| DSC | Addis Air Cargo Services | ADDIS CARGO | Ethiopia | |
| DSK | Aero Algarve | SKYBANNER | Portugal | |
| DST | Aex Air | DESERT | United States | |
| DVI | Aero Davinci International | AERO DAVINCI | Mexico | |
| DYN | Aero Dynamics | AERO DYNAMIC | United States | |
| EAE | Aeroservicios Ecuatorianos | AECA | Ecuador | |
| EAP | Aero-Pyrenees | AERO-PYRENEES | France | |
| EAT | Air Transport | TRANS EUROPE | Slovakia | |
| EE | EAY | Aero Airlines | REVAL | Estonia | |
| EBC | Aero Ejecutivo De Baja California | CALIXJET | Mexico | |
| 4F | ECE | Air City | AIRCITY | Germany | |
| ECG | Aero Ejecutivos RCG | EJECTUIVOS RCG | Mexico | |
| ECL | Aeronautica Castellana | AERO CASTELLANA | Spain | |
| ECM | Aerolineas Comerciales | AERO COMERCIALES | Mexico | |
| EDA | Aerolineas Nacionales Del Ecuador | ANDES | Ecuador | |
| EET | Air Este | AESTE | Spain | |
| EFC | Air Mana | FLIGHT TAXI | France | |
| EI | EIN | Aer Lingus | SHAMROCK | Ireland | |
| EJP | Aeroservicios Ejecutivos Corporativos | EJECCORPORATIVOS | Mexico | |
| E8 | ELG | Alpi Eagles | ALPI EAGLES | Italy | |
| END | Arrendoora y Transportadora Aerea | ARRENDADORA | Mexico | |
| ENW | Aeronaves Del Noroeste | AERONOR | Spain | |
| EOL | Airailes | EOLE | France | |
| EOM | Aero Ermes | AERO ERMES | Mexico | |
| EPL | Aero Transportes Empresariales | EMPRESARIALES | Mexico | |
| EPE | Aero Empresarial | AEROEMPRESARIAL | Mexico | |
| KY | EQL | Air São Tomé and Príncipe | EQUATORIAL | Air São Tomé and Príncipe | defunct |
| ERG | Avianergo | AVIANERGO | Russia | |
| ERI | Aero Servicios Regiomontanos | ASERGIO | Mexico | |
| ERK | Aerosec | AEROSEC | Chile | |
| ERM | Aeromaan | EOMAAN | Mexico | |
| ESB | Aerosaba | AEROSABA | Mexico | |
| ESO | Avitat | | United Kingdom | |
| ESU | Aerolineas Ejecutivas Del Sureste | ALESUR | Mexico | |
| ESZ | Aeronautica Le Esperanza | ESPERANZA | Mexico | |
| ETC | ATTICO | TRANATTICO | Sudan | |
| ETE | Aero Siete | AEROSIETE | Mexico | |
| EUK | Air Atlanta Europe | SNOWBIRD | United Kingdom | |
| EVE | Air Evex | SUNBEAM | Germany | |
| EVR | Aeronautical Academy of Europe | DIANA | Portugal | |
| EXG | Air Exchange | EXCHANGE | United States | |
| FAC | Atlantic Helicopters | FAROECOPTER | Denmark | |
| FAG | Argentine Air Force | FUAER | Argentina | |
| PC | FAJ | Air Fiji | FIJIAIR | Fiji | |
| FAN | AF-Air International | FANBIRD | Angola | |
| FBW | Aviation Data Systems | | United States | |
| FCI | Air Carriers | FAST CHECK | United States | |
| FCO | Aerofrisco | AEROFRISCO | Mexico | |
| FCU | Alfa 4 | | Mexico | |
| FDA | African Airlines | AIR SANKORE | Mali | |
| FDS | African Medical and Research Foundation | FLYDOC | Kenya | |
| FGT | Aero Freight | FREIAERO | Mexico | |
| FIC | Aerosafin | AEROSAFIN | Mexico | |
| OF | FIF | Air Finland | AIR FINLAND | Finland | |
| FII | Aerodata Flight Inspection | FLIGHT CHECKER | Germany | |
| FIX | Airfix Aviation | AIRFIX | Finland | |
| FJ | FJI | Air Pacific | PACIFIC | Fiji | |
| FLD | Air Falcon | | Pakistan | |
| RC | FLI | Atlantic Airways | FAROELINE | Faroe Islands | |
| QH | FLZ | Air Florida | AIR FLORIDA | United States | defunct |
| FMT | Air Fret De Mauritanie | | Mauritania | |
| FNM | Avio Nord | | Italy | |
| FNO | Aeroflota Del Noroeste | RIAZOR | Spain | |
| FNX | Aero Fenix | AERO FENIX | France | |
| FPY | African Company Airlines | AFRICOMPANY | Democratic Republic of the Congo | |
| FRJ | Afrijet Airlines | AFRIJET | Nigeria | |
| FRK | Afrika Aviation Handlers | AFRIFAST | Kenya | |
| FRQ | Afrique Chart'air | CHARTER AFRIQUE | Cameroon | |
| FRT | Aerofreight Airlines | | Russia | |
| FST | Aereos Limited | FAST TRACK | United Kingdom | |
| FTC | Air Affaires Tchad | AFFAIRES TCHAD | Chad | |
| FTY | ABC Bedarsflug | FLY TYROL | Austria | |
| NY | FXI | Air Iceland | FAXI | Iceland | |
| 2P | GAP | Air Philippines | ORIENT PACIFIC | Philippines | |
| GAU | Aerogaucho | AEROGAUCHO | Uruguay | |
| GBJ | Aero Business Charter | GLOBAL JET | Germany |
| GBN | Atlantic Airlines | ATLANTIC GABON | Gabon | |
| GCF | Aeronor | AEROCARTO | Spain | |
| GCK | Aerogem Cargo | AEROGEM | Ghana | |
| GFO | Aerovias del Golfo | AEROVIAS GOLFO | Mexico | |
| GGL | Aeronautica | GIRA GLOBO | Angola | |
| ZX | GGN | Air Georgian | GEORGIAN | Canada | |
| GHL | Aviance | HANDLING | United Kingdom | Gatwick Handling |
| GHN | Air Ghana | AIR GHANA | Ghana | |
| GIL | African International Transport | AFRICAN TRANSPORT | Guinea | |
| 2U | GIP | Air Guinee Express | FUTURE EXPRESS | Guinea | |
| GIZ | Africa Airlines | AFRILENS | Guinea | |
| GLL | Air Gemini | TWINS | Angola | |
| GLT | Aero Charter | GASLIGHT | United States | |
| GME | Aguilas Mayas Internacional | MAYAN EAGLES | Guatemala | |
| GMM | Aerotaxis Guamuchil | AEROGUAMUCHIL | Mexico | |
| GMS | Aeroservicios Gama | SERVICIOS GAMA | Mexico | |
| 0A | GNT | Amber Air | GINTA | Lithuania | |
| GOA | Alberta Government | ALBERTA | Canada | |
| GRE | Air Scotland | GREECE AIRWAYS | Greece | |
| DA | GRG | Air Georgia | AIR GEORGIA | Georgia | |
| GRI | Air Cargo Center | | São Tomé and Príncipe | |
| GL | GRL | Air Greenland | GREENLAND | Denmark | |
| LL | GRO | Allegro | ALLEGRO | Mexico | defunct |
| GRR | Agroar - Trabalhos Aereos | AGROAR | Portugal | |
| GRX | Aircompany Grodno | GRODNO | Belarus | |
| GSP | Airlift Alaska | GREEN SPEED | United States | |
| GSV | Agrocentr-Avia | AGRAV | Kazakhstan | |
| GTC | Altin Havayolu Tasimaciligi Turizm Ve Ticaret | GOLDEN WINGS | Turkey | |
| 5Y | GTI | Atlas Air | GIANT | United States | |
| GTP | Aerotaxi Grupo Tampico | GRUPOTAMPICO | Mexico | |
| GUA | Aerotaxis de Aguascalientes | AGUASCALIENTES | Mexico | |
| GG | GUY | Air Guyane | GREEN BIRD | French Guiana | |
| GVI | Air Victoria Georgia | IRINA | Georgia | |
| H9 | HAD | Air D'Ayiti | HAITI AVIA | Haiti | |
| GG | HAH | Air Comores International | AIR COMORES | Comoros | |
| HAT | Air Taxi | TAXI BIRD | France | |
| HEI | Aerohein | AEROHEIN | Chile | |
| HGH | Atlantic Air Lift | HIGHER | France | |
| HHA | Atlantic Airlines de Honduras | ATLANTIC HONDURAS | Honduras | |
| HID | Aviacion Ejecutiva De Hildago | EJECUTIVA HIDALGO | Mexico | |
| HJA | Air Haiti | AIRHAITI | Haiti | |
| HD | HLN | Air Holland | ORANGE | Netherlands | defunct |
| HJT | Al Rais Cargo | AL-RAIS CARGO | United Arab Emirates | |
| HKH | Air-Invest | HAWKHUNGARY | Hungary | |
| HMA | Air Tahoma | TAHOMA | United States | |
| HMT | Air Nova | HAMILTON | Canada | |
| HOM | Aero Homex | AERO HOMEX | Mexico | |
| HPO | Almiron Aviation | ALMIRON | Uganda | |
| HQO | Avinor | | Norway | |
| HYR | Airlink Airways | HIGHFLYER | Ireland | |
| 8C | HZT | Air Horizon | HORIZON TOGO | Togo | |
| IAE | AC Insat-Aero | | Russia | |
| ICM | Air Inter Cameroun | INTER-CAMEROUN | Cameroon | |
| IFI | Air Lift | HELLAS LIFT | Greece | |
| IKM | Aero Survey | GHANA SURVEY | Ghana | |
| ILK | Aero Airline | ILEK | Kazakhstan | |
| IME | Airtime Charters | AIRTIME | United Kingdom | |
| IMN | Aerotaxis Cimarron | TAXI CIMARRON | Mexico | |
| INA | Aero International | AERO-NACIONAL | Mexico | |
| ING | Aeroingenieria | AEROINGE | Chile | |
| INO | Aeroservicios Intergrados de Norte | INTENOR | Mexico | |
| IPL | Airpull Aviation | IPULL | Spain | |
| IRD | Arvand Airlines | ARVAND | Iran | |
| IRH | Atlas Aviation Group | ATLAS AVIA | Iran | |
| IRW | Aram Airline | ARAM | Iran | |
| IRX | Aria Tour | ARIA | Iran | |
| ITE | Aerotaxi | AEROTAXI | Czech Republic | |
| ITF | Avita-Servicos Aereos | AIR AVITA | Angola | |
| ITO | Aero Citro | AERO CITRO | Mexico | |
| IVE | Air Executive | COMPANY EXEC | Spain | |
| IWS | Aviainvest | | Russia | |
| W9 | JAB | Air Bagan | AIR BAGAN | Myanmar | |
| JAD | Aerojal | AEROJAL | Mexico | |
| JAR | Airlink | AIRLINK | Austria | |
| JEE | Ambjek Air Services | AMBJEK AIR | Nigeria | |
| UTX | Avfinity | | United States | |
| JMR | Alexandair | ALEXANDAIR | Canada | |
| JMX | Air Jamaica Express | JAMAICA EXPRESS | Jamaica | |
| JOA | Air Swift Aviation | | Australia | |
| JOB | Aerojobeni | JOBENI | Mexico | |
| IP | JOL | Atyrau Air Ways | EDIL | Kazakhstan | |
| JPR | Aerosmith Aviation | JASPER | United States | |
| JTS | Arrendamiento de Aviones Jets | AVIONESJETS | Mexico | |
| JUA | Aero Juarez | JUAREZ | Mexico | |
| QK | JZA | Air Canada Jazz | JAZZ | Canada | |
| KAA | Asia Aero Survey and Consulting Engineers | AASCO | Republic of Korea | |
| KAD | Air Kirovograd | AIR KIROVOGRAD | Ukraine | |
| KAM | Air Mach | ICO-AIR | Italy | |
| KAV | Air Kufra | AIRKUFRA | Libya | |
| KEK | Arkhabay | ARKHABAY | Kazakhstan | |
| KFK | Aero Charter Krifka | KRIFKA AIR | Austria | |
| KFT | Air Kraft Mir | AIR KRAFT MIR | Uzbekistan | |
| KGD | Air Concorde | CONCORDE AIR | Bulgaria | |
| KHH | Alexandria Airlines | | Egypt | |
| KIE | Afit | TWEETY | Germany | |
| KKB | Air South | KHAKI BLUE | United States | |
| KK | KKK | Atlasjet | ATLASJET | Turkey | |
| KLB | Air Mali International | TRANS MALI | Mali | |
| KLZ | Aerokaluz | AEROKALUZ | Mexico | |
| JS | KOR | Air Koryo | AIR KORYO | Democratic People's Republic of Korea | |
| KOY | Araiavia | ALEKS | Kazakhstan | |
| KRE | AeroSucre | AEROSUCRE | Colombia | |
| KRT | Air Kokshetau | KOKTA | Kazakhstan | |
| KSI | Air Kissari | KISSARI | Angola | |
| KTN | Aeronavigaciya | AERONAVIGACIYA | Ukraine | |
| KVR | Alliance Avia | KAVAIR | Kazakhstan | |
| KYC | Av Atlantic | DOLPHIN | United States | |
| KC | KZR | Air Astana | ASTANALINE | Kazakhstan | |
| LAG | Aerovias De Lagos | AEROLAGOS | Mexico | |
| LV | LBC | Albanian Airlines | ALBANIAN | Albania | |
| LBI | Albisa | ALBISA | Mexico | |
| LBW | Albatros Airways | ALBANWAYS | Albania | |
| LDG | Aerolineas Aereas Ejecutivas De Durango | DURANGO | Mexico | |
| LDL | Aerologic | | Russia | |
| LDN | Al-Donas Airlines | ALDONAS AIR | Nigeria | |
| LDR | Aero Lider | AEROLIDER | Mexico | |
| LEM | Aleem | | Egypt | |
| LET | Aerolineas Ejecutivas | MEXEJECUTIV | Mexico | |
| LFA | Air Alfa | | Turkey | |
| LFC | Aero Control Air | LIFE FLIGHT CANADA | Canada | |
| LGN | Aerolaguna | AEROLAGUNA | Mexico | |
| LHR | Al Ahram Aviation | AL AHRAM | Egypt | |
| D4 | LID | Alidaunia | ALIDA | Italy | |
| LIE | Al-Dawood Air | AL-DAWOOD AIR | Nigeria | |
| LKP | American Aviation | LAKE POWELL | United States | |
| LKS | Airlink Solutions | AIRLIN | Spain | |
| LKY | Air Solutions | LUCKY | United States | |
| CD | LLR | Alliance Air | ALLIED | India | |
| LMA | Aerolima | AEROLIMA | Mexico | |
| LML | Alamia Air | ALAMIA AIR | Libya | |
| LMP | Air Plus Argentina | AIR FLIGHT | Argentina | |
| LMT | Almaty Aviation | ALMATY | Kazakhstan | |
| LMX | Aerolineas Mexicanas J S | LINEAS MEXICANAS | Mexico | |
| LMY | Air Almaty | AGLEB | Kazakhstan | |
| LMZ | Air Almaty ZK | ALUNK | Kazakhstan | |
| XL | LNE | Aerolane | LAN ECUADOR | Ecuador | Lineas Aereas Nacionales Del Ecuador |
| LNK | Airlink | LINK | South Africa | |
| LNT | Aerolineas Internacionales | LINEAINT | Mexico | |
| LOK | Alok Air | ALOK AIR | Sudan | |
| LOU | Air Saint Louis | AIR SAINTLOUIS | Senegal | |
| LPC | Alpine Aviation | NETSTAR | South Africa | |
| A6 | LPV | Air Alps Aviation | ALPAV | Austria | |
| LRO | Alrosa-Avia | ALROSA | Russia | |
| LRW | Al Rida Airways | AL RIDA | Mauritania | |
| LSK | Aurela | AURELA | Lithuania | |
| LSM | Aerobusinessservice | | Russia | |
| LSR | Alsair | ALSAIR | France | |
| LTI | Aerotaxis Latinoamericanos | LATINO | Mexico | |
| LUC | Alninati Aeronautics | STEF | Switzerland | |
| TD | LUR | Atlantis European Airways | | Armenia | |
| LVN | Aliven | ALIVEN | Italy | |
| LVR | Aviavilsa | AVIAVILSA | Lithuania | |
| L8 | LXG | Air Luxor GB | LUXOR GOLF | Guinea-Bissau | |
| LK | LXR | Air Luxor | AIRLUXOR | Portugal | |
| LYT | Apatas Air | APATAS | Lithuania | |
| LZP | Air Ban | DOC AIR | Bulgaria | |
| LZR | Air Lazur | LAZUR BEE-GEE | Bulgaria | |
| MAM | Aerodromo De La Mancha | AEROMAN | Spain | |
| MK | MAU | Air Mauritius | AIRMAURITIUS | Mauritius | |
| MBA | Avag Air | AVAG AIR | Austria | |
| MBB | Air Manas | AIR MANAS | Kyrgyzstan | |
| MBC | Airjet Exploracao Aerea De Carga | MABECO | Angola | |
| MBV | Aeriantur-M | AEREM | Moldova | |
| MCB | Air Mercia | WESTMID | United Kingdom | |
| MCD | Air Medical | AIR MED | United Kingdom | |
| MCO | Aerolineas Marcos | MARCOS | Mexico | |
| MDC | Atlantic Aero and Mid-Atlantic Freight | NIGHT SHIP | United States | |
| MD | MDG | Air Madagascar | AIR MADAGASCAR | Madagascar | |
| MDX | Aerosud Charter | MEDAIR | South Africa | |
| MEF | Air Meridan | EMPENNAGE | Nigeria | |
| MFL | Aero McFly | MCFLY | Mexico | |
| MGE | Asia Pacific Airlines | MAGELLAN | United States | |
| MGS | Aeromagar | AEROMAGAR | Mexico | |
| MIE | Aero Premier De Mexico | AEROPREMIER | Mexico | |
| 9U | MLD | Air Moldova | AIR MOLDOVA | Moldova | |
| MLF | Amal Airlines | AMAL | Djibouti | |
| MLI | Air Mali | AIR MALI | Mali | |
| MLN | Air Madeleine | AIR MADELEINE | Canada | |
| MMC | Aermarche | AERMARCHE | Italy | |
| MMD | Air Alsie | MERMAID | Denmark | |
| MMM | Aviation Company Meridian | AVIAMERIDIAN | Russia | |
| MMP | AMP Incorporated | AMP-INC | United States | |
| MMX | Airmax | PERUMAX | Peru | |
| MNE | Aerolineas Amanecer | AEROAMANECER | Mexico | |
| MNG | Aero Mongolia | AERO MONGOLIA | Mongolia | |
| MOC | Air Monarch Cargo | MONARCH CARGO | Mexico | |
| MOP | Aeropublicitaria De Angola | PUBLICITARIA | Angola | |
| MOR | Aerolineas De Morelia | AEROMORELIA | Mexico | |
| A7 | MPD | Air Plus Comet | RED COMET | Spain | |
| QO | MPX | Aeromexpress | AEROMEXPRESS | Mexico | |
| MQT | Air ITM | MUSKETEER | France | |
| MRL | Aeromorelos | AEROMORELOS | Mexico | |
| MRM | Aerocharter | MARITIME | Canada | |
| MRP | Abas | ABAS | Czech Republic | |
| MR | MRT | Air Mauritanie | MIKE ROMEO | Mauritania | |
| MSC | Air Cairo | | Egypt | |
| MSK | Air Sport | AIR SPORT | Bulgaria | |
| MSM | Aeromas | AEROMAS EXPRESS | Uruguay | |
| MSO | Aerolíneas Mesoamericanas | MESO AMERICANAS | Mexico | |
| MSV | Aero-Kamov | AERAFKAM | Russia | |
| MTB | Aerotaxis Metropolitanos | AEROMETROPOLIS | Mexico | |
| MTE | Aeromet Linea Aerea | AEROMET | Chile | |
| MTK | Air Metack | AIRMETACK | Angola | |
| MTY | Air Montegomery | MONTY | United Kingdom | |
| MXO | Aerotaxi Mexicano | MAXAERO | Mexico | |
| MYS | Aero Yaqui Mayo | AERO YAQUI | Mexico | |
| MZK | AVC Airlines | | Japan | |
| MZL | Aerovias Montes Azules | MONTES AZULES | Mexico | |
| 3S | | Aeroland Airways | | Greece | |
| 2V | | Amtrak | | United States | |
| 8D | | Astair | | Russian Federation |
| F4 | NBK | Albarka Air | AL-AIR | Nigeria | |
| NCL | ACA-Ancargo Air Sociedade de Transporte de Carga Lda | ANCARGO AIR | Angola | |
| NEL | Aero Servicios de Nuevo Laredo | AEROLAREDO | Mexico | |
| NGV | Angoavia | ANGOAVIA | Angola | |
| NID | Aeroni | AERONI | Mexico | |
| NIE | Aeroejecutiva Nieto | AERONIETO | Mexico | |
| AJ | NIG | Aero Contractors | AEROLINE | Nigeria | |
| NKZ | Aerokuzbass | NOVOKUZNETSK | Russia | |
| NPT | Atlantic Airlines | NEPTUNE | United Kingdom | |
| NRS | Atlantic Richfield Company | NORTH SLOPE | United States | |
| NSO | Aerolineas Sosa | SOSA | Honduras | |
| NTD | Aero Norte | | Mexico | |
| NTV | Air Inter Ivoire | INTER-IVOIRE | Ivory Coast | |
| NUL | Aeroservicios De Nuevo Leon | SERVICIOS NUEVOLEON | Mexico | |
| NVI | Avial NV Aviation Company | NEW AVIAL | Russia | |
| NWG | Airwing | NORWING | Norway | |
| NXA | Air Next | BLUE-DOLPHIN | Japan | |
| OAO | Arkhangelsk 2 Aviation Division | DVINA | Russia | |
| OGI | Aerogisa | AEROGISA | Mexico | |
| OLV | Aerolineas Olve | OLVE | Mexico | |
| OMG | Aeromega | OMEGA | United Kingdom | |
| ONR | Air One Nine | EDER | Libya | |
| ONT | Air Ontario | ONTARIO | Canada | |
| ORP | Aerocorp | CORPSA | Mexico | |
| ORS | Action Air | AVIATION SERVICE | Italy | |
| OSN | Aerosan | AEROSAN | Mexico | |
| OSO | Aviapartner Limited Company | | Russia | |
| PAJ | Aliparma | ALIPARMA | Italy | |
| PBT | Air Parabet | PARABET | Bangladesh | |
| 8Y | PBU | Air Burundi | AIR-BURUNDI | Burundi | |
| PCG | Aeropostal Cargo de Mexico | POSTAL CARGO | Mexico | |
| PCK | Air Pack Express | AIRPACK EXPRESS | Spain | |
| PCS | Air Palace | AIR PALACE | Mexico | |
| OT | PEL | Aeropelican Air Services | PELICAN | Australia | |
| PFI | Aerolineas Chihuahua | PACIFICO CHIHUAHUA | Mexico | |
| PFT | Air Cargo Express International | PROFREIGHT | United States | |
| PHR | Al Farana Airline | PHARAOH | Egypt | |
| PHW | Ave.com | PHOENIX SHARJAH | United Arab Emirates | |
| PIE | Air South West | PIRATE | United Kingdom | |
| PIF | Aeroservicios California Pacifico | AEROCALPA | Mexico | |
| PKA | AST Pakistan Airways | PAKISTAN AIRWAY | Pakistan | |
| PNL | Aero Personal | AEROPERSONAL | Mexico | |
| PNU | Aero Servicios Platinum | AERO PLATINUM | Mexico | |
| POY | Apoyo Aereo | APOYO AEREO | Mexico | |
| PRI | Aerotransportes Privados | AEROPRIV | Mexico | |
| PRT | Atlantic Coast Jet | PATRIOT | United States | |
| AD | PRZ | Air Paradise International | RADISAIR | Indonesia | Defunct 2005 |
| PSE | Aeroservicio Sipse | SIPSE | Mexico | |
| PSL | Aeroservicios Corporativos De San Luis | CORSAN | Mexico | |
| PVA | Aerotransportes Privados | TRANSPRIVADO | Mexico | |
| PZA | Aereo Taxi Paraza | AEREO PARAZA | Mexico | |
| QD | QCL | Air Class Lineas Aereas | ACLA | Uruguay | |
| QEA | Aviation Consultancy Office | | Australia | |
| QAT | Aero Taxi | AIR QUASAR | Canada | |
| QKC | Aero Taxi Aviation | QUAKER CITY | United States | |
| QLA | Aviation Quebec Labrador | QUEBEC LABRADOR | Canada | |
| QS | QSC | African Safari Airways | ZEBRA | Kenya | |
| QUI | Aero Quimmco | QUIMMCO | Mexico | |
| RAD | Alada | AIR ALADA | Angola | |
| RAI | Aerotur-Air | DIASA | Kazakhstan | |
| RAP | Air Center Helicopters | RAPTOR | United States | |
| RBE | Aur Rum Benin | RUM BENIN | Benin | |
| RBJ | Aeroserivios Del Bajio | AEROBAJIO | Mexico | |
| 4Y | RBU | Airbus France | AIRBUS FRANCE | France | |
| RBV | Air Roberval | AIR ROBERVAL | Canada | |
| RBX | Arubaexel | ARUBA | Aruba | |
| RCC | Air Charters Eelde | RACER | Netherlands | |
| RCE | Aerocer | AEROCER | Mexico | |
| RCF | Aeroflot-Cargo | AEROFLOT-CARGO | Russia | |
| MC | RCH | Air Mobility Command | REACH | United States | United States Air Force |
| RCI | Air Cassai | AIR CASSAI | Angola | |
| RCO | Aero Renta De Coahuila | AEROCOAHUILA | Mexico | |
| RCP | Aerocorp | AEROCORPSA | Mexico | |
| RCQ | Aerolineas Regionales | REGIONAL CARGO | Mexico | |
| RCU | Atlantic S.L. | AIR COURIER | Spain | |
| RCX | Air Service Center | SERVICE CENTER | Italy | |
| RDD | Adygeya Airlines | ADLINES | Russia | |
| RDM | Air Ada | AIR ADA | Mauritania | |
| RE | REA | Aer Arann | AER ARANN | Ireland | |
| REN | Aero-Rent | AERORENT | Mexico | |
| RES | Australian Maritime Safety Authority | RESCUE | Australia | |
| UU | REU | Air Austral | REUNION | France | |
| REY | Aero-Rey | AEROREY | Mexico | |
| RFC | Aero Africa | AERO AFRICA | Swaziland | |
| RFD | Aerotransportes Rafilher | RAFHILER | Mexico | |
| RGO | Argo | ARGOS | Dominican Republic | |
| RGT | Airbourne School of Flying | AIRGOAT | United Kingdom | |
| RHL | Air Archipels | ARCHIPELS | France | |
| RIF | Aviation Ministry of the Interior of the Russian Federation | INTERMIN AVIA | Russian Federation | |
| RIS | Aeris Gestion | AERIS | Spain | |
| 6K | RIT | Asian Spirit | ASIAN SPIRIT | Philippines | |
| RJS | Aeroservicios Jet | ASERJET | Mexico | |
| RKA | Air Afrique | AIRAFRIC | Ivory Coast | |
| A5 | RLA | Airlinair | AIRLINAIR | France | |
| RLK | Air Nelson | | New Zealand | |
| RLL | Air Leone | AEROLEONE | Sierra Leone | |
| QL | RLN | Aero Lanka | AERO LANKA | Sri Lanka | |
| RLZ | Air Alize | ALIZE | France | |
| RMD | Air Amder | AIR AMDER | Mauritania | |
| R3 | RME | Armenian Airlines | ARMENIAN | Armenia | defunct |
| MV | RML | Armenian International Airways | | Armenia | defunct |
| RMO | Arm-Aero | ARM-AERO | Armenia | |
| RMX | Air Max | AEROMAX | Bulgaria | |
| 2O | RNE | Air Salone | AIR SALONE | Sierra Leone | |
| RNM | Aeronem Air Cargo | AEROMNEM | Ecuador | |
| RNR | Air Cargo Masters | RUNNER | United States | |
| U8 | RNV | Armavia | ARMAVIA | Armenia | |
| ROE | Aeroeste | ESTE-BOLIVIA | Bolivia | |
| ROH | Aero Gen | AEROGEN | Mexico | |
| ROI | Avior Airlines | AVIOR | Venezuela | |
| ROL | Aeroel Airways | AEROEL | Israel | |
| BQ | ROM | Aeromar | BRAVO QUEBEC | Dominican Republic | defunct |
| ROO | Aeroitalia | AEROITALIA | Italy | |
| ROD | Aerodan | AERODAN | Mexico | |
| P5 | RPB | AeroRepública | AEROREPUBLICA | Colombia | |
| RPC | Aerolineas Del Pacifico | AEROPACSA | Ecuador | |
| RRC | Aero Roca | AEROROCA | Mexico | |
| RRE | Aerotransportes Internacionales De Torreon | AERO TORREON | Mexico | |
| RRM | Acvila Air-Romanian Carrier | AIR ROMANIA | Romania | |
| RSC | Aerolineas Ejecutivas Tarascas | TARASCAS | Mexico | |
| BF | RSR | Aero-Service | CONGOSERV | Republic of the Congo | |
| 5L | RSU | Aerosur | AEROSUR | Bolivia | |
| RTE | Aeronorte | LUZAVIA | Portugal | |
| RTH | Artis | ARTHELICO | France | |
| RTO | Arhabaev Tourism Airlines | ARTOAIR | Kazakhstan | |
| RTQ | Air Turquoise | TURQUOISE | France | |
| RTU | Aerotucan | AEROTUCAN | Mexico | |
| RUD | Air Anastasia | ANASTASIA | Ukraine | |
| RUM | Air Rum | AIR RUM | Sierra Leone | |
| RUN | ACT Havayollari | CARGO TURK | Turkey | |
| RVP | Air VIP | AEROVIP | Portugal | |
| RVT | Aircompany Veteran | AIR-VET | Armenia | |
| RWB | Alliance Express Rwanda | | Rwanda | |
| RWC | Arrow Ecuador Arrowec | ARROWEC | Ecuador | |
| RWY | Aerogroup 98 Limited | TYNWALD | United Kingdom | |
| RXT | Aeroxtra | AERO-EXTRA | Mexico | |
| RWS | Air Whitsunday | | Australia | |
| RZL | Aero Zambia | AERO ZAMBIA | Zambia | |
| RZN | Aero Zano | ZANO | Mexico | |
| RZZ | Anoka Air Charter | RED ZONE | United States | |
| SBH | Aerosaab | AEROSAAB | Mexico | |
| SCD | Associated Aviation | ASSOCIATED | Nigeria | |
| SCM | American Jet International | SCREAMER | United States | |
| EX | SDO | Air Santo Domingo | AERO DOMINGO | Dominican Republic | |
| SDP | Aero Sudpacifico | SUDPACIFICO | Mexico | |
| SEF | Aero Servicios Ejecutivas Del Pacifico | SERVIPACIFICO | Mexico | |
| JR | SER | Aero California | AEROCALIFORNIA | Mexico | |
| SFM | A-Safar Air Services | AIR SAFAR | Nigeria | |
| SGV | Aerosegovia | SEGOVIA | Nicaragua | |
| SHH | Airshare Holdings | AIRSHARE | United Kingdom | |
| SIY | Aerosiyusa | SIYUSA | Mexico | |
| SIZ | Aero Silza | AEROSILZA | Mexico | |
| SJN | Air San Juan | SAN JUAN | United States | |
| SKP | Aero-North Aviation Services | SKIPPER | Canada | |
| SMI | Aero Sami | SAMI | Mexico | |
| Z3 | SMJ | Avient Aviation | AVAVIA | Zimbabwe | |
| SOD | Aerolineas Sol | ALSOL | Mexico | |
| SOE | Air Soleil | AIR SOLEIL | Mauritania | |
| SOG | Aero Soga | AEROSOGA | Guinea-Bissau | |
| SPD | Airspeed Aviation | SPEEDLINE | Canada | |
| M3 | SPJ | Air Service | AIR SKOPJE | Macedonia | |
| SPO | Aeroservicios Ejecutivos Del Pacifico | EJECTUIV PACIFICO | Mexico | |
| SPY | Asian Aerospace Service | THAI SPACE | Thailand | |
| SPZ | Airworld | SPEED SERVICE | South Africa | |
| SQR | Alsaqer Aviation | ALSAQER AVIATION | Libya | |
| SRI | Air Safaris and Services | AIRSAFARI | New Zealand | |
| SRV | Aero Servicio Corporativo | SERVICORP | Mexico | |
| SSL | Air Sultan | SIERRA SULTAN | Sierra Leone | |
| SSM | Aero 1 Pro-Jet | RAPID | Canada | |
| SSN | Airquarius Air Charter | SUNSTREAM | South Africa | |
| STK | Aeropac | SAT PAK | United States | |
| STT | Air St. Thomas | PARADISE | United States | |
| SUE | Aerolineas Del Sureste | AEROSURESTE | Mexico | |
| SUY | Aerial Surveys (1980) Limited | SURVEY | New Zealand | |
| GM | SVK | Air Slovakia | SLOVAKIA | Slovakia | |
| SWH | Adler Aviation | SHOCKWAVE | Canada | |
| R3 | SYL | Aircompany Yakutia | AIR YAKUTIA | Russia | |
| SYT | Aerosud Aviation | SKYTRACK | South Africa | |
| TAA | Aeroservicios de La Costa | AERO COSTA | Mexico | |
| VW | TAO | Aeromar | TRANS-AEROMAR | Mexico | |
| TBL | Aerotrebol | AEROTREBOL | Mexico | |
| TBO | Aero Taxi de Los Cabos | AERO CABOS | Mexico | |
| JY | TCI | Air Turks and Caicos | KERRMONT | Turks and Caicos Islands | |
| TCO | Aerotranscolombina de Carga | TRANSCOLOMBIA | Colombia | |
| TDG | Air Cargo Express | TURBO DOG | United States | |
| TDT | Atlas Helicopters | TRIDENT | United Kingdom | |
| TDY | Air Today | AIR TODAY | United States | |
| TED | Aero Servicios Azteca | AEROAZTECA | Mexico | |
| OR | TFL | Arkefly | ARKEFLY | Netherlands | |
| TIR | Antair | ANTAIR | Mexico | |
| TLB | Atlantique Air Assistance | TRIPLE-A | France | |
| TLD | Aero Taxi Autlan | AEREO AUTLAN | Mexico | |
| TLE | Aero Util | AEROUTIL | Mexico | |
| TLU | Aero Toluca Internactional | AEROTOLUCA | Mexico | |
| TME | Aero Taxi del Centro de Mexico | TAXICENTRO | Mexico | |
| TOC | Aerotropical | TROPICMEX | Mexico | |
| TOH | Air Tomisko | TOMISKO CARGO | Serbia | |
| CG | TOK | Airlines PNG | BALUS | Papua New Guinea | |
| TON | Aero Tanala | AEROTANALA | Mexico | |
| TPB | Aero Tropical | AERO TROPICAL | Angola | |
| TY | TPC | Air Calédonie | AIRCAL | France | |
| TPK | Air Horizon | TCHAD-HORIZON | Chad | |
| TPO | Aero Taxi del Potosi | TAXI-POTOSI | Mexico | |
| TQS | Aeroturquesa | AEROTURQUESA | Mexico | |
| TRH | Airmark Aviation | TRANSTAR | United States | |
| FL | TRS | AirTran Airways | CITRUS | United States | |
| TS | TSC | Air Transat | TRANSAT | Canada | |
| TSQ | airtransse | AIRTRA | Japan | |
| TTB | Aerolineas Turisticas del Caribe | AERO TURISTICAS | Mexico | |
| TTE | Avcenter | TETON | United States | |
| TUN | Air Tungaru | TUNGARU | Kiribati | defunct |
| EC | TWN | Avialeasing Aviation Company | TWINARROW | Uzbekistan | |
| TXD | Aerotaxis del Noroeste | TAXI OESTE | Mexico | |
| TXF | Aerotaxis Alfe | ALFE | Mexico | |
| TXI | Aereotaxis | AEREOTAXIS | Mexico | |
| VO | TYR | Austrian Arrows | TYROLEAN | Austria | |
| TZA | Aero Tomza | AERO TOMZA | Mexico | |
| TZT | Air Zambezi | ZAMBEZI | Zimbabwe | |
| UAG | Afra Airlines | AFRALINE | Ghana | |
| UAR | Aerostar Airlines | AEROSTAR | Ukraine | |
| UCK | Air Division of the Eastern Kazakhstan Region | GALETA | Kazakhstan | |
| DW | UCR | Aero-Charter Ukraine | CHARTER UKRAINE | Ukraine | |
| UED | Air LA | AIR L-A | United States | |
| 6U | UKR | Air Ukraine | AIR UKRAINE | Ukraine | |
| UMB | Air Umbria | AIR UMBRIA | Italy | |
| UND | Atuneros Unidos de California | ATUNEROS UNIDOS | Mexico | |
| USC | AirNet Express / Airnet Systems | STAR CHECK | United States | |
| VNR | Avantair | AVANTAIR | United States |
| FLP | Aeroclub Flaps | AEROCLUB FLAPS | Spain | |
| 6R | DRU | Alrosa Mirny Air Enterprise | MIRNY | Russia | |
| AD | AZU | Azul Linhas Aereas Brasileiras | Azul | Brazil | |
