| 1 | ZL | Hazelton Airlines | ICAO: HZL, Callsign: Hazelton, IATA Prefix: 899, Name changed to Hazelton Airlines d/b/a Rgional Express | AUS | AVCODES |
| 2 | ZL | Affretair (Private) Limited | ICAO: AFM, Callsign: Afro, IATA Prefix: 292, Designator ZL* recalled by IATA. Designator changed from AG | ZW | AVCODES |
| 3 | ZL | Hazelton Airlines d/b/a Regional Express | ICAO: HZL, Callsign: Hazelton, IATA Prefix: 899, Designator ZL recalled by IATA. Name changed from Hazelton Airlines | AUS | AVCODES |
| 4 | ZL | Australiawide Airlines Ltd. d/b/a Regional Express | ICAO: RXA, Callsign: Rex, IATA Prefix: 899, | AUS | AVCODES |
| 5 | ZL | Regional Express Pty Limited | ICAO: REX, IATA Prefix: 899, | AUS | AVCODES |
| 6 | ZLASK | ZKM Lask | | PL | TRAFFIC |
| 7 | ZLGC | ZHENHUA LOGISTICS GROUP CO LTD | | | SCAC4 |
| 8 | ZLHQ | ZILLAH HAULING SERVICE | | | SCAC4 |
| 9 | ZLIC | Z LINE COMPANY | | | SCAC1 |
| 10 | ZLIC | ZEUS LOGISTICS INC | | | SCAC4 |
| 11 | ZLIG | Z-LOGISTICS INC | | | SCAC4 |
| 12 | ZLIS | ZEETEX LOGISTICS INC | | | SCAC4 |
| 13 | ZLLC | ZUKE LLC | | | SCAC4 |
| 14 | ZLLN | Z-LINE LOGISTICS LLC | | | SCAC4 |
| 15 | ZLMC | ZIEGLER LUMBER COMPANY | | | SCAC4 |
| 16 | ZLNE | Z-LINE | | | SCAC4 |
| 17 | ZLNL | Z LINE LTD | | | SCAC4 |
| 18 | ZLOG | ZHL LOGISTICS | | | SCAC4 |
| 19 | ZLOKO | ZOS LOKO | | SK | VKM |
| 20 | ZLOL | Z LOGISTICS LLC | | | SCAC4 |
| 21 | ZLSC | ZIPP LOGISTICS LLC | | | SCAC4 |
| 22 | ZLSM | Zuidlimburgse Stoomtrein Maatschappij | | NL | VKM |
| 23 | ZLTD | ZOOM 01 LTD | | | SCAC4 |
