| 1 | NTH | Hokkaido Air System Co. Ltd. | Callsign: North Air, | J | AVCODES |
| 2 | NTH | Hokkaido Air System | | | ICAO1 |
| 3 | NTHC | NORTHERN COACH INC | | | SCAC3 |
| 4 | NTHC | NORTH COAST TRUCKING LTD | | | SCAC4 |
| 5 | NTHE | NORTHERN EXPRESS INC | | | SCAC3 |
| 6 | NTHI | NIGHT HAWK TRUCK LINES INC | | | SCAC4 |
| 7 | NTHL | NORTHLAND TRANSPORTATION INC | | | SCAC3 |
| 8 | NTHM | NATIONS TOWING & HEAVY EQUIPMENT HA | | | SCAC4 |
| 9 | NTHN | NATHAN, RALPH CARTAGE | | | SCAC3 |
| 10 | NTHP | NIGHTHAWK EXPRESS INC | | | SCAC4 |
| 11 | NTHR | NORTHERN | | | SCAC3 |
| 12 | NTHS | NAPOLEON TREES HAULINGS & SALES INC | | | SCAC4 |
| 13 | NTHT | NITE-HAWK TRANSPORTATION | | | SCAC3 |
| 14 | NTHT | NINE ONE ONE THREE-FIVE NINE SEVEN | | | SCAC4 |
| 15 | NTHW | NORTHWESTERN TRUCKING INC | | | SCAC3 |
