| 1 | YE | Ilam Airline | ICAO: IRY, Callsign: Ilam, Name changed from Eram Airlines | IR | AVCODES |
| 2 | YE | Yanda Airlines | Designator XN recalled by IATA. Designator changed from ST*. Formerly Singleton Air Serivces | AUS | AVCODES |
| 3 | YE | Aryan Cargo & Express Logistics (P) Ltd. (ACE) | ICAO: ACQ, Callsign: Ace Cargo, IATA Prefix: 185, Ceased operations on 01 June 2010. | IND | AVCODES |
| 4 | YE | Yan Air Ltd. | ICAO: ANR, Callsign: Yanair, | UA | AVCODES |
| 5 | YEAG | YEAGERS FUEL INC | | | SCAC4 |
| 6 | YEAI | YECKS SERVICE | | | SCAC4 |
| 7 | YECT | YECTLI TRANSPORTATION INC | | | SCAC4 |
| 8 | YEDH | YEATON, DEAN H INC | | | SCAC4 |
| 9 | YEDU | TVS GROUP DMCC | | UAE | BIC |
| 10 | YEEH | YEE, HARLEY RARE COMICS | | | SCAC4 |
| 11 | YEHO | YEOHOLME TRANSPORT INC | | | SCAC4 |
| 12 | YEIN | YEADARA EXPRESS INC | | | SCAC4 |
| 13 | YEJ | Ystad - Eslöv Järnväg | 1865 - 1941 | S | svenska-lok.se |
| 14 | YEL | Summit Aviation, Inc. | Callsign: Yellowstone, | USA | AVCODES |
| 15 | YELA | YG EXPRESS LLC | | | SCAC4 |
| 16 | YELF | YELLOW FORWARDING CO | | | SCAC4 |
| 17 | YELI | YELLI, BERNARD TRUCKING | | | SCAC4 |
| 18 | YEME | YEMAN AIRWAYS | | | SCAC4 |
| 19 | YEMX | Yesera Monterrey, S.A. | added 1/1957; 10/1957; eliminated 1/1958 | | NAKINA |
| 20 | YEMX | Yesera Monterrey, S.A. | 10/57; eliminated 1/58 | | NRHS |
| 21 | YEMX | YESERA MONTERREY, SA | | | PWRC |
| 22 | YENP | YORK ENTERPRISES | | | SCAC4 |
| 23 | YEO | Foster Yeoman Limited | | GB | TRAFFIC |
| 24 | YEOU | YEOU FA CHEMICAL CO LTD | | RC | BIC |
| 25 | YEOU | YEOU FA CHEMICAL CO LTD | | | SCAC4 |
| 26 | YEREVAN | | City: Yerevan | AM | TRAFFIC |
| 27 | YESE | YES EXPRESS INC | | | SCAC4 |
| 28 | YESF | YES FREIGHT INC | | | SCAC4 |
| 29 | YESI | YES IMPORTS | | | SCAC4 |
| 30 | YESK | YESIK, EDWARD TRUCKING | | | SCAC4 |
| 31 | YESL | YES LOGISTICS CORP | | | SCAC4 |
| 32 | YESP | YES PRODUCTIONS | | | SCAC4 |
| 33 | YESR | YES TRANS INC | | | SCAC4 |
| 34 | YET | Etihad Flight College | Callsign: Zayed, Subsidiary of Etihad Airways. | UAE | AVCODES |
