| 1 | XJ | Mesaba Aviation, Inc. | ICAO: MES, Callsign: Mesaba, IATA Prefix: 582, Founded in 1944 as Mesaba Aviation. Commenced operations 04 February 1974. Ceased operations on 04 January 2012 (merged with Pinnacle Airlines). Designator XJ reinstated by IATA | USA | AVCODES |
| 2 | XJ | Thai Airasia X Company Limited | ICAO: TAX, Callsign: Express Wing, IATA Prefix: 940, | T | AVCODES |
| 3 | XJA | Assistance Aeroportuaire de Uaeroport de Paris | | F | AVCODES |
| 4 | XJC | Xclusive Jet Charters Ltd. | Callsign: Exclusive Jet, Name changed to XJC Limited on 22 Febraury 2017. | GB | AVCODES |
| 5 | XJC | XJC Limited | Callsign: Exclusive Jet, Name changed from Xclusive Jet Charters Ltd. on 22 Febraury 2017. | GB | AVCODES |
| 6 | XJC | Xclusive Jet Charter Limited | | | ICAO1 |
| 7 | XJE | X-Jet GmbH | | A | AVCODES |
| 8 | XJT | The Streamline Partnership Ltd. | Callsign: Xray, Name changed to Xjet Limited. | GB | AVCODES |
| 9 | XJT | Xjet Limited | Callsign: Xray, Name changed from The Streamline Partnership Ltd. | GB | AVCODES |
| 10 | XJT | Xjet Limited | | | ICAO1 |
