| 1 | RLB | Highland Airways | Callsign: Hiway, Name changed from Air Alba Limited | GB | AVCODES |
| 2 | RLB | Air Alba Limited | IATA: 8R, Name changed to Highland Airways | GB | AVCODES |
| 3 | RLB | Reliable Unique Services Aviation LLC | IATA: R6, Callsign: Reliable, IATA Prefix: 827, IATA designator changed to R4 | AM | AVCODES |
| 4 | RLB | Reliable Unique Services Aviation LLC | IATA: R4, Callsign: Reliable, IATA Prefix: 827, IATA designator changed from R6* | AM | AVCODES |
| 5 | RLB | Sunlight Express Airways t/a Sunlight Air | IATA: 2R, Callsign: Sunlight, | RP | AVCODES |
| 6 | RLBA | RELLER TRANSPORT | | | SCAC4 |
| 7 | RLBB | ROULOTTES LUPIEN TWO ZERO ZERO ZERO | | | SCAC4 |
| 8 | RLBC | RELIABLE CHAUFFEURS | | | SCAC3 |
| 9 | RLBC | ROMANA TRANSPORT LTD | | | SCAC4 |
| 10 | RLBD | RLS TRUCKING INC | | | SCAC4 |
| 11 | RLBE | RELIABLE EXPRESS | | | SCAC3 |
| 12 | RLBG | ROETHLISBERGER, JOHN | | | SCAC3 |
| 13 | RLBG | RELIABLE LOGISTICS INC | | | SCAC4 |
| 14 | RLBK | RLB TRUCKING CORPORATION | | | SCAC3 |
| 15 | RLBL | RELIABLE TRANSFER, INC | | | SCAC3 |
| 16 | RLBM | RELIABLE MOVING INC | | | SCAC3 |
| 17 | RLBM | RELIABLE MOVING & STORAGE | | | SCAC4 |
| 18 | RLBN | R L B LEASING INC | | | SCAC3 |
| 19 | RLBO | RELIABLE OIL CO INC | | | SCAC4 |
| 20 | RLBP | RELIABLE TRANSPORT | | | SCAC4 |
| 21 | RLBR | RELIABLE RESOURCES INC | | | SCAC3 |
| 22 | RLBR | RLB FOOD DISTRIBUTORS | | | SCAC4 |
| 23 | RLBS | RILLS BUS SERVICE | | | SCAC3 |
| 24 | RLBS | RELIABLE TRANSPORTATION SERVICES LL | | | SCAC4 |
| 25 | RLBT | RELIABLE TRANSPORTATION INC | | | SCAC4 |
| 26 | RLBW | ROLANDS BONDED WAREHOUSE | | | SCAC3 |
