| 1 | QQ | Alliance Airlines PTY Limited | ICAO: FWQ, ICAO designator changed to QQA. Name changed from Flight West Airlines Pty Ltd. Designator YC recalled by IATA | AUS | AVCODES |
| 2 | QQ | Reno Air, Inc. | ICAO: ROA, Callsign: Reno Air, Merged in American Airlines | USA | AVCODES |
| 3 | QQ | Flight West Airlines Pty Ltd. | ICAO: FWQ, Name changed to Alliance Airlines PTY Limited. Designator YC recalled by IATA | AUS | AVCODES |
| 4 | QQ | Aerovias Quisqueyana Ltda. | Callsign: Quisqueyana, | DOM | AVCODES |
| 5 | QQ | Alliance Airlines PTY Limited | ICAO: QQA, Callsign: Alli, ICAO designator changed to UTY. ICAO designator changed from FWQ | AUS | AVCODES |
| 6 | QQ | Alliance Airlines PTY Limited | ICAO: UTY, Callsign: Alli, ICAO designator changed from QQA. ICAO designator changed from FWQ | AUS | AVCODES |
| 7 | QQA | Alliance Airlines PTY Limited | IATA: QQ, Callsign: Alli, ICAO designator changed to UTY. ICAO designator changed from FWQ | AUS | AVCODES |
| 8 | QQE | Qatar Executive | | Q | AVCODES |
| 9 | QQIU | QINGDAO WSR CONTAINER SERVICE CO., LTD | | PRC | BIC |
| 10 | QQLI | QUIS QUEYA LINES INC MIAMI FL | | | SCAC3 |
