| 1 | AIU | Alicante Internacional Airlines, S.L. | Callsign: Alia, | E | AVCODES |
| 2 | AIU | Air Segura, S.L. | | E | AVCODES |
| 3 | AIU | Alicante Internacional Airlines | | | ICAO1 |
| 4 | AIUC | A PLUS INTERNATIONAL (USA) INC | | | SCAC4 |
| 5 | AIUK | AIR TRUCK EXPRESS INC | | | SCAC3 |
| 6 | AIUK | AIR TRUCK EXPRESS | | | SCAC4 |
| 7 | AIUK | Aggregate Industries | | GB | TRAFFIC |
| 8 | AIUK | Aggregate Industries | | UK | VKM |
| 9 | AIUL | ALL INTERNATIONAL USA INC | | | SCAC4 |
| 10 | AIUR | A R O TRUCKING INC | | | SCAC4 |
| 11 | AIUS | ALICIAS TOURS | | | SCAC3 |
| 12 | AIUT | AIROUTE CARGO INC | | | SCAC4 |
