| 1 | XE | SBS Aircraft | ICAO: ALT, Callsign: Green-Craft, | KZ | AVCODES |
| 2 | XE | Korea Express Air Co., Ltd. | ICAO: KEA, Callsign: Korea Express, IATA designator changed to KW. | ROK | AVCODES |
| 3 | XE | South Central Air, Inc. | ICAO: SCA, Designator recalled by IATA | USA | AVCODES |
| 4 | XE | Eurocontrol | ICAO: EUC, Designator XE recalled by IATA. Non-airline org. relating to the airline industry (ATC) | B | AVCODES |
| 5 | XE | Delux Public Charter, LLC d/b/a JetSuiteX | ICAO: JSX, Callsign: Bigstripe, Name cahnegd to Delux Public Charter, LLC d/b/a JSX Air | USA | AVCODES |
| 6 | XE | Delux Public Charter, LLC d/b/a JSX Air | ICAO: JSX, Callsign: Bigstripe, Name cahnegd from Delux Public Charter, LLC d/b/a JetSuiteX. | USA | AVCODES |
| 7 | XEC | International Executive Airlines Limited | Callsign: Airexec, | GB | AVCODES |
| 8 | XEC | Air Executive Charter GmbH | | D | AVCODES |
| 9 | XEC | Air Executive Charter | | | ICAO1 |
| 10 | XEJ | XE Jet Aviation Ltd | Callsign: Red Tail, | WAN | AVCODES |
| 11 | XEL | Helicopteros Xel-Ha, S.A. de C.V. | Callsign: Xel-ha, | MEX | AVCODES |
| 12 | XEL | Excel Charter Ltd. | Callsign: Heli Excel, | GB | AVCODES |
| 13 | XEL | Excel Charter | | | ICAO1 |
| 14 | XELP | EL PASO CITY LINES | | | PWRC |
| 15 | XEME | XTREME TRANSPORTATION INC | | | SCAC4 |
| 16 | XEN | Thro Aviation, Inc. d/b/a ZEN Flight | Callsign: Zen Jet, ICAO designator changed from THO. ICAO Callsign changed from Thro. | USA | AVCODES |
| 17 | XENF | XENONFS LLC | | | SCAC4 |
| 18 | XER | Xerox Corporation | Callsign: Xerox, | USA | AVCODES |
| 19 | XER | Xerox Corporation | | | ICAO1 |
| 20 | XES | Europstar Express | | M | AVCODES |
| 21 | XESI | XTEND ENERGY SERVICES INC | | | SCAC4 |
