| 1 | YT | Air Togo S.A. | ICAO: TGA, Callsign: Air Togo, IATA Prefix: 030, Designator AX recalled by IATA | TG | AVCODES |
| 2 | YT | SkyWest Airlines | Designator YT recalled by IATA | AUS | AVCODES |
| 3 | YT | Yeti Airlines Domestic Pvt. Ltd. | ICAO: NYT, Callsign: Yeti Airlines, IATA designator changed from 0Y* | NEP | AVCODES |
| 4 | YTAI | YTA | | | SCAC4 |
| 5 | YTBU | STAR OIL MAURITANIE | | RIM | BIC |
| 6 | YTBU | ELF OIL MAURITANIE | | | SCAC4 |
| 7 | YTCA | YUSEN LOGISTICS (AMERICAS) INC (CA | | | SCAC4 |
| 8 | YTDZ | YANKEETOWN DOCK CORP. | | | PWRC |
| 9 | YTFL | YELLOW TRANSIT FRT LINES | | | PWRC |
| 10 | YTIA | YAMILE TRANSPORT INC | | | SCAC4 |
| 11 | YTIB | YULA TRANSPORT INC | | | SCAC4 |
| 12 | YTIF | YARBROUGH TRANSPORTATION INC | | | SCAC4 |
| 13 | YTIQ | YAGODA TRANSPORT INC | | | SCAC4 |
| 14 | YTKE | Y & TK EXPRESS INC | | | SCAC4 |
| 15 | YTKL | YANTIS TRUCKING LLC | | | SCAC4 |
| 16 | YTKT | Y2K TRANSPORT | | | SCAC4 |
| 17 | YTLA | YUTZY TRANSPORTATION LTD | | | SCAC4 |
| 18 | YTLD | YODER TRANSPORT LTD | | | SCAC4 |
| 19 | YTLL | YUGO-TRANS LLC | | | SCAC4 |
| 20 | YTNL | YOUNG TRANSPORTATIONS LLC | | | SCAC4 |
| 21 | YTOK | Y2K | | | SCAC4 |
| 22 | YTRA | YR TRANSPORTATION | | | SCAC4 |
| 23 | YTRG | YOUNG TRUCKING | | | SCAC4 |
| 24 | YTRK | YES TRUCK | | | SCAC4 |
| 25 | YTRP | YOUNGS TRANSPORT | | | SCAC4 |
| 26 | YTRT | YELLOW TRANSPORTATION | | | SCAC4 |
| 27 | YTSD | YAG TRANSFER SA DE CV | | | SCAC4 |
| 28 | YTSL | YOUNG TRUCK SERVICE LLC | | | SCAC4 |
| 29 | YTSV | YOWELL TRANSPORTATION SERVICES INC | | | SCAC4 |
| 30 | YTTI | YELLOW TAIL TRANSPORTATION INC | | | SCAC4 |
| 31 | YTTX | TTX COMPANY | | | PWRC |
| 32 | YTTX | TTX COMPANY | | | SCAC4 |
| 33 | YTUL | YOUR TOURS UNLLIMITED | | | SCAC4 |
| 34 | YTVA | YUSEN LOGISTICS (AMERICAS) INC (VA | | | SCAC4 |
| 35 | YTWA | YUSEN LOGISTICS (AMERICAS) INC (WA | | | SCAC4 |
| 36 | YTZI | YANTZI TRANSPORT LTD | | | SCAC4 |
