| 1 | AIA | Avies SA | IATA: U3, Callsign: Avies, Founded and commenced operations in 1991. Ceased operations on 01 April 2016 after AOC withdrawn by Estonian CAA. | EST | AVCODES |
| 2 | AIA | Air Atlantis | IATA: EJ, Callsign: Air Atlantis, Commenced operations in May 1985. Ceased operations on 30 April 1993. Aircraft transferred to parent company TAP Air Portugal | P | AVCODES |
| 3 | AIA | Air Atlantic Sarl | IATA: SL, | P | AVCODES |
| 4 | AIA | Regourd Aviation d/b/a Amelia | IATA: 8R, Callsign: Amelia, | F | AVCODES |
| 5 | AIA | Avies | IATA: U3 | | ICAO1 |
| 6 | AIA | AIRCO ALLOY | | | PWRC |
| 7 | AIAA | AIM LOGISTICS LLC | | | SCAC4 |
| 8 | AIAB | AGRI INTERMODAL SERVICES LLC | | | SCAC4 |
| 9 | AIAC | AMERICAN CONTAINER TRANSPORT INC | | | SCAC3 |
| 10 | AIAD | A & A INTERNATIONAL FREIGHT FORWARD | | | SCAC4 |
| 11 | AIAE | AMERI-CAN CARRIERS LTD | | | SCAC3 |
| 12 | AIAG | ARIAS LOGISTICS INC | | | SCAC4 |
| 13 | AIAH | ARC AIR LOGISTICS INC | | | SCAC4 |
| 14 | AIAI | AMERICAN PATRIOT LINES | | | SCAC4 |
| 15 | AIAJ | ALASKA INTERNATIONAL TRANSPORT | | | SCAC4 |
| 16 | AIAL | AIR ALERT INTERNATIONAL INC | | | SCAC3 |
| 17 | AIAM | AMERICAN TRANSPORTATION SERVICES IN | | | SCAC4 |
| 18 | AIAN | AIR ANIMAL INC | | | SCAC3 |
| 19 | AIAN | A-ONE (A-1) BAIT INC | | | SCAC4 |
| 20 | AIAO | ARTISAN ASSOCIATES INC | | | SCAC3 |
| 21 | AIAR | AIR CARE INC | | | SCAC3 |
| 22 | AIAS | ALEXANDER & HORNUNG INC | | | SCAC4 |
| 23 | AIAV | ARTESANIAS INDIGO RUGS | | | SCAC4 |
| 24 | AIAY | ATTALEIA MARINE COMPANY LIMITED | | | SCAC3 |
| 25 | AIAY | AIM INTEGRATED | | | SCAC4 |
