| 1 | ASQ | Asia Service Airlines | Callsign: Asia Service, | KZ | AVCODES |
| 2 | ASQ | Atlantic Southeast Airlines, Inc. | IATA: EV, Callsign: Acey, IATA Prefix: 862, Merged with and name changed to ExpressJet Airlines, Inc on 31 December 2011. ICAO designator changed from ACY and previously from ASE and CAA. ICAO callsign change from Candler. | USA | AVCODES |
| 3 | ASQ | ExpressJet Airlines, LLC | IATA: EV, Callsign: Acey, IATA Prefix: 862, Ceased operations and filed for protection under Chapter 11 on 23 August 2022. Name changed from Atlantic Southeast Airlines, Inc. on 31 December 2011. ICAO designator changed from ACY. | USA | AVCODES |
| 4 | ASQ | Atlantic Southeast Airlines | IATA: EV | | ICAO1 |
| 5 | ASQ | Atlantic Southeast Airlines | | USA | TRAFFIC |
| 6 | ASQA | ANDERSON STEAMSHIP AGENCY INC | | | SCAC3 |
| 7 | ASQC | ALLSTATE COACHES INC | | | SCAC3 |
| 8 | ASQD | ASD TRANSPORTATION INC | | | SCAC3 |
| 9 | ASQD | ALL STAR DELIVERY | | | SCAC4 |
| 10 | ASQE | ASAP TRANSPORTATION EXPRESS INC | | | SCAC3 |
| 11 | ASQE | AL SEQIR EXPRESS CARGO LIMITED | | | SCAC4 |
| 12 | ASQF | ASL FREIGHT SYSTEMS | | | SCAC3 |
| 13 | ASQH | ASTROLABE SHIPPING LTD MALTA | | | SCAC3 |
| 14 | ASQH | ASHTECH TRANSPORT | | | SCAC4 |
| 15 | ASQI | AMERICAN SPILL CONTROL INC | | | SCAC3 |
| 16 | ASQK | ALL STAR TRUCKING INC | | | SCAC4 |
| 17 | ASQL | ASQ LINES INC | | | SCAC3 |
| 18 | ASQN | ASL LOGISTICS INC | | | SCAC4 |
| 19 | ASQO | ASHLAND INC | | | SCAC4 |
| 20 | ASQP | A S A P COURIER | | | SCAC3 |
| 21 | ASQR | ASAP TRANSPORTATION | | | SCAC3 |
| 22 | ASQR | ASTRACON | | | SCAC4 |
| 23 | ASQS | ASTIPALEA SHIPPING CORP | | | SCAC3 |
| 24 | ASQS | ALL STAR TRANSPORTATION INC | | | SCAC4 |
| 25 | ASQT | ALLSTAR TRANSPORT INC | | | SCAC4 |
| 26 | ASQV | ALL STATES TRANSPORT SERVICES INC | | | SCAC3 |
| 27 | ASQV | ALL SEASONS TRACTOR SERVICE | | | SCAC4 |
| 28 | ASQW | AVALOS, SANTOS ARNOLDO | | | SCAC4 |
| 29 | ASQY | A & S FREIGHT LLC | | | SCAC4 |
