| 1 | WLS | Williams Air, Inc. | Callsign: Williams Air, | USA | AVCODES |
| 2 | WLS | Williams Air | | | ICAO1 |
| 3 | WLS | WILSON BUS SERVICE | | | SCAC4 |
| 4 | WLS | Waggon- und Lokreparaturservice GmbH | | D | TRAFFIC |
| 5 | WLS | Waggon und Lokreperatur Service GmbH | | DE | VKM |
| 6 | WLSA | WILSON, M EQUIPMENT INC | | | SCAC4 |
| 7 | WLSD | WILLSIE EQUIPMENT SALES INC | | | SCAC4 |
| 8 | WLSE | WE LEASE IT INC | | | SCAC4 |
| 9 | WLSF | WILLS TRANSFER LIMITED | | | SCAC4 |
| 10 | WLSG | WELESKI RELOCATION GROUP | | | SCAC4 |
| 11 | WLSH | WALSH CARGO INC | | | SCAC4 |
| 12 | WLSI | WLS TRUCKING | | | SCAC4 |
| 13 | WLSJ | WILLIAMS, J K LLC | | | SCAC4 |
| 14 | WLSM | WORLDTRANS LOGISTICS SERVICES LIMIT | | | SCAC4 |
| 15 | WLSN | WILSON AGENCY B V | | | SCAC4 |
| 16 | WLSO | WILSON OIL COMPANY INC | | | SCAC4 |
| 17 | WLSP | WILSON PAVING | | | SCAC4 |
| 18 | WLSQ | WILSON, J E & SON INC | | | SCAC4 |
| 19 | WLSR | WILSON SERVICES INC | | | SCAC4 |
| 20 | WLSU | WHITACRE LOGISTICS SERVICES, LLC | | USA | BIC |
| 21 | WLSU | WLS DUBAI | | | SCAC4 |
| 22 | WLSV | WAGNER LOGISTICS SERVICES | | | SCAC4 |
