| 1 | WST | Western Air Limited | IATA: WU, Callsign: Western Bahamas, | BS | AVCODES |
| 2 | WST | Western Air | | | ICAO1 |
| 3 | WST | WINSTON SALEM TERMINAL CO. | | | PWRC |
| 4 | WST | Wagon Service Travel | | SK | TRAFFIC |
| 5 | WSTA | WESTERN STAR TRANSPORTATION LLC | | | SCAC4 |
| 6 | WSTBA | Westbahn Management GmbH | | AT | VKM |
| 7 | WSTH | WEST HARTFORD MOVING & STORAGE CO. | | | SCAC1 |
| 8 | WSTI | WESTTRANSAUTO INC | | | SCAC4 |
| 9 | WSTK | WISE TRUCKING | | | SCAC4 |
| 10 | WSTL | West Suburban Transit Lines | City: Chicago | USA | TRAFFIC |
| 11 | WSTM | WESTERN MARINE TRANSPORT NV | | | SCAC4 |
| 12 | WSTN | Wagonservice spol. sr.o. | | SK | VKM |
| 13 | WSTO | WEST OIL CO INC | | | SCAC4 |
| 14 | WSTP | WESTLAND TRANSPORTATION | | | SCAC4 |
| 15 | WSTR | WILMOTH, SCOTT TRUCKING LLC | | | SCAC4 |
| 16 | WSTS | WILDERNESS STABLES & TACK LTD | | | SCAC4 |
| 17 | WSTT | Westchester Street Transportation | | US-NY | TRAFFIC |
| 18 | WSTV | WESTERVELT TRANSPORT & SET-UP INC | | | SCAC4 |
| 19 | WSTX | Whitestone Supply Co. | 7/2000-7/2005 (not listed) | | NAKINA |
| 20 | WSTX | Whitestone Supply Co. | Jul-00 | | NRHS |
| 21 | WSTX | WHITESTONE SUPPLY CO. | | | PWRC |
| 22 | WSTX | Whitestone Supply | | | RSRV |
| 23 | WSTZ | WESTSIDE TRANSPORT, INC. | | | PWRC |
| 24 | WSTZ | Westside Transport | | | RSRV |
| 25 | WSTZ | WESTSIDE TRANSPORT, INC. | | | SCAC4 |
