| 1 | QW | Turks & Caicos Airways | ICAO: TCI, Callsign: Turk National, IATA Prefix: 254, | TC | AVCODES |
| 2 | QW | Saarland Airlines | ICAO: SLL, Callsign: Saarland, Designator SX recalled by IATA. Declared bankrupt 28 July 1993. | D | AVCODES |
| 3 | QW | Mines Air Services Ltd. | | Z | AVCODES |
| 4 | QW | Blue Wings AG | ICAO: BWG, Callsign: Blue wings, IATA Prefix: 049, Ceased operations on 13 January 2010. Established in 2002 | D | AVCODES |
| 5 | QW | Inter-Island Air Services Ltd. | ICAO: IES, Callsign: Inter Island, Desigantor QW recalled by IATA | WG | AVCODES |
| 6 | QW | Qingdao Airlines Co., Ltd. | ICAO: QDA, Callsign: Sky Legend, IATA Prefix: 912, | PRC | AVCODES |
| 7 | QWA | Qwestair | Designator QD* recalled by IATA | AUS | AVCODES |
| 8 | QWA | Qwestair | IATA: QD, Designator QD* recalled by IATA | AUS | AVCODES |
| 9 | QWA | Qwestair | | | ICAO1 |
| 10 | QWAS | QUIDLEY, WILLIAM A AND SON LLC | | | SCAC4 |
| 11 | QWDC | QUALITY WAREHOUSE & DISTRIBUTION CO | | | SCAC4 |
| 12 | QWDS | QUICKWAY DISTRIBUTORS INC | | | SCAC3 |
| 13 | QWDS | QW TRANSPORT LLC | | | SCAC4 |
| 14 | QWDY | QUIKWAY DELIVERY SERVICE | | | SCAC3 |
| 15 | QWIK | QWIKWAY TRUCKING CO | | | SCAC3 |
| 16 | QWIK | QWIKWAY TRUCKING CO | | | SCAC4 |
| 17 | QWKQ | QUICK-WAY CO | | | SCAC3 |
| 18 | QWL | Qwila Air | | | ICAO1 |
| 19 | QWLD | QUALITY WHOLESALE LTD | | | SCAC4 |
| 20 | QWMS | QUICKWAY MESSENGER SERVICE INC | | | SCAC3 |
| 21 | QWRC | QUALITY WILD RICE | | | SCAC4 |
| 22 | QWSA | QUALITY WHOLESALE FLORAL | | | SCAC4 |
| 23 | QWTG | Q W TRUCKING | | | SCAC4 |
| 24 | QWTN | QUICK WAY TRANSPORTATION | | | SCAC4 |
| 25 | QWTV | QUEENSWAY TRAVEL TOURS INC | | | SCAC3 |
| 26 | QWYT | QUICKWAY TRANSPORTATION INC | | | SCAC4 |
