| 1 | WSH | Welsh Airways Ltd. | Callsign: Dragon, | GB | AVCODES |
| 2 | WSH | WICHITA STOCKHANDLING & TRACKS ASSOCIATION, INC. | | | PWRC |
| 3 | WSHC | WASATCH LOGISTICS LLC | | | SCAC4 |
| 4 | WSHE | WANSHIP ENTERPRISES LLC | | | SCAC4 |
| 5 | WSHF | WASHITA FREIGHT SYSTEMS INC | | | SCAC4 |
| 6 | WSHH | WHALEY, SILAS SPECIALIZED HEAVY HAU | | | SCAC4 |
| 7 | WSHI | WALSH INTERNATIONAL | | | SCAC4 |
| 8 | WSHN | WIGHT SHIPPING LIMITED | | | SCAC4 |
| 9 | WSHP | WEATHER SHIELD TRANSPORTATION LTD | | | SCAC4 |
| 10 | WSHR | WEST SHORE RAILROAD | | | PWRC |
| 11 | WSHT | WASHINGTON TRANSFER INC | | | SCAC4 |
| 12 | WSHV | WEST SIDE HEAVY HAULING INC | | | SCAC4 |
| 13 | WSHW | WHITESHADOW ENT INC | | | SCAC4 |
