Sân bay quốc tế
| Airline Name | ICAO | IATA | Callsign | Country |
| Albatros Airways | LBW | 4H | ALBANWAYS | Albania |
| Alberta Government | GOA | Canada | ||
| Alexandair | AXN | Greece | ||
| Alexandria Airlines | KHH | XH | Egypt | |
| ALIA - Royal Jordanian Airline | RJA | RJ | Jordan | |
| Aliadriatica | ADH | AP | Italy | |
| Alisarda | ISS | IG | Italy | |
| Alisea Airlines | BBG | FZ | Italy | |
| Alitalia | AZA | AZ | ALITALIA | Italy |
| Alitalia Express | SMX | XM | Italy | |
| All Leisure | United Kingdom | |||
| All Nippon Airways | ANA | NH | Japan | |
| Allegheny Commuter | ALO | United States | ||
| Allegiant Air | AAY | G4 | United States | |
| Allegro Airlines | GRO | LL | Mexico | |
| Alliance Air | LLR | CD | ALLIED | India |
| Alliance Air | AFJ | Y2 | Uganda | |
| Alliance Airlines | QQA | Australia | ||
| Alliance Express | Ethiopia | |||
| ALMA de Mexico | MSO | C4 | ALMA | Mexico |
| AlMasria Universal Airlines | LMU | Egypt | ||
| Almaty Aviation | LMT | 6T | Kazakhstan | |
| Aloha Air Cargo | AAH | KH | ALOHA | United States |
| Aloha Airlines | AAH | AQ | ALOHA | United States |
| ALPI Eagles | ELG | E8 | ALPI EAGLES | Italy |
| Alpine Aviation | ANF | United Kingdom | ||
| Alsace Exel | XT | France | ||
| Altyn Air Airlines | LYN | QH | Kyrgyzstan | |
| Alyemda - Democratic Yemen Airlines | DYA | DY | People's Democratic Republic Of Yemen | |
| Amakusa Airlines | AMAKUSA | Japan | ||
| Amapola Flyg | APF | AMAPOLA | Sweden | |
| Ambassador Airways | AMY | B3 | United Kingdom | |
| Amberair | United Kingdom | |||
| AMC Aviation | AMV | Egypt | ||
| Amcur Investments Nao | United States | |||
| Amerer Air | AMK | Austria | ||
| America West Airlines | AWE | HP | CACTUS | United States |
| American Airlines | AAL | AA | AMERICAN | United States |
| American Eagle | EGF | MQ | EAGLEFLIGHT | United States |
| American Falcon | AFB | WK | Argentina | |
| American Inter-Island | ITL | United States | ||
| American International Airways | CKS | CB | United States | |
| American Trans Air | AMT | TZ | United States | |
| Ameristar Jet Charter | AJI | United States | ||
| Amsterdam Airlines | AAN | Netherlands | ||
| Amway Corp | United States | |||
| Anadolu Jet | Turkey | |||
| Andalus Lineas Aéreas | Spain | |||
| Andalusair | Spain | |||
| Andes Lineas Aereas | OY | Argentina | ||
| Angel Airlines | NGE | 8G | Thailand | |
| Angkor Airways | AKW | G6 | AIR ANGKOR | Cambodia |
| Anglo Cargo Ltd. | ANC | EC | United Kingdom | |
| Anic Airways | ANR | N3 | Croatia | |
| Ankair | VVF | WORLD FOCUS | Turkey | |
| Ansett Airlines | AAA | AN | Australia | |
| Ansett Australia | AAA | AN | ANSETT | Australia |
| Ansett Express | NSW | WX | Australia | |
| Ansett New Zealand | New Zealand | |||
| Ansett W.A. | Australia | |||
| Antillean Airlines (ALM) | ALM | LM | Netherlands Antilles | |
| Antonov Design Bureau | ADB | Ukraine | ||
| Antrak Air | ABV | ANTRAK | Ghana | |
| AOM French Airlines | AOM | IW | France | |
| APA International Air | APY | 7P | United States | |
| Apollo Airlines | AOA | PJ | Greece | |
| Aqaba Airlines | Jordan | |||
| Arab International Aviation Company | KK | Egypt | ||
| Arabasco | Saudi Arabia | |||
| ARAMCO | Saudi Arabia | |||
| Aravco | ARV | United Kingdom | ||
| Archana Airways | ACY | F5 | India | |
| Arctic Sunwest Charters | Canada | |||
| ARG Linea Privada Argentina | LPR | MJ | LAPA | Argentina |
| Aria Air | IRX | ARIA | Iran, Islamic Republic Of | |
| Ariana Afghan Airlines | AFG | FG | ARIANA | Afghanistan |
| Arik Air | ARA | W3 | ARIK AIR | Nigeria |
| Arkas | ARK | K7 | Colombia | |
| ArkeFly | TFL | OR | ARKEFLY | Netherlands |
| Arkia - Israeli Airlines | AIZ | IZ | Israel | |
| Armavia | RNV | U8 | Armenia | |
| Armenian Airlines | RME | R3 | Armenia | |
| Armenian International Airways | RML | MV | Armenia | |
| Arnoro | ARN | Bosnia And Herzegovina | ||
| Arrow Air | APW | JW | BIG A | United States |
| Aruba Exel | RBX | Aruba | ||
| Aserca Airlines | OCA | R7 | ASERCA | Venezuela |
| Asia Continental Airlines | CID | Kazakhstan | ||
| Asia Pacific Airlines | MLP | A6 | Papua New Guinea | |
| Asian Spirit | RIT | 6K | Philippines | |
| Asiana Airlines | AAR | OZ | ASIANA | Republic Of Korea |
| ASNet Inc | United States | |||
| Aspen Airways | ASP | United States | ||
| Aspen Mountain Air | United States | |||
| Astar Air Cargo | United States | |||
| Astra Airlines | ARN | Switzerland | ||
| Astra Airlines | AZI | Greece | ||
| Astraeus | AEU | 5W | FLYSTAR | United Kingdom |
| Astro Air International | AAP | Philippines |