| 1 | QE | ECA (Europe Continental Airways) d/b/a/ Crossair Europe | ICAO: ECC, Callsign: Cigigne, Name changed from Europe Continental Airways (ECA) | CH | AVCODES |
| 2 | QE | Air Moorea | ICAO: TAH, Callsign: Air Moorea, Designator QE recalled by IATA | PF | AVCODES |
| 3 | QE | Europe Continental Airways (ECA) | ICAO: ECC, Callsign: Cigigne, Name changed to ECA (Europe Continental Airways) d/b/a/ Crossair Europe. Name changed from European Continental Airways (ECA) | CH | AVCODES |
| 4 | QE | European Continental Airways (ECA) | ICAO: ECC, Callsign: Cigigne, Name changed to Europe Continental Airways (ECA) | CH | AVCODES |
| 5 | QE | Air Tahiti | ICAO: TAH, | PF | AVCODES |
| 6 | QE | Fars Qeshm Airlines | ICAO: QFZ, Callsign: Fars Qeshm, IATA Prefix: 721, Founded in 2003. Ceased operations during 2013. | IR | AVCODES |
| 7 | QE | Express Freighters Australia Pty Limited | ICAO: EFA, Callsign: Express Freight, Operates as QANTASFREIGHT. | AUS | AVCODES |
| 8 | QEA | Aviation Consultancy Office | | AUS | AVCODES |
| 9 | QEA | Aviation Consultancy Office | | | ICAO1 |
| 10 | QECC | QUICKSILVER EXPRESS COURIER OF COLO | | | SCAC3 |
| 11 | QECC | QUINLAN FUEL SERVICE | | | SCAC4 |
| 12 | QECL | QUALITY EXPRESS CARRIER LLC | | | SCAC4 |
| 13 | QECM | QUICKSILVER EXPRESS COURIER OF MINN | | | SCAC3 |
| 14 | QECM | QUICKSILVER EXPRESS COURIER OF MINN | | | SCAC4 |
| 15 | QEIC | QITAI ENTERPRISE INC | | | SCAC4 |
| 16 | QEIN | QUALITY EXPRESS INC | | | SCAC4 |
| 17 | QELL | QWEST EXPRESS LLC | | | SCAC4 |
| 18 | QEXP | QUALITY EXPRESS | | | SCAC4 |
