| 1 | PIE | Air South West | Callsign: Pirate, Ceased operations | GB | AVCODES |
| 2 | PIE | Air South West | | | ICAO1 |
| 3 | PIEC | PACIFIC INTERMOUNTAIN EXPRESS | | | PWRC |
| 4 | PIEC | PIERCE NATIONAL INC | | | SCAC4 |
| 5 | PIED | PIEDMONT EXPRESS SERVICES | | | SCAC4 |
| 6 | PIEE | PIONEER EXPRESS INC | | | SCAC3 |
| 7 | PIEG | PIER TRUCKING CORPORATION | | | SCAC4 |
| 8 | PIEH | PIEHL, H TRANSFER COMPANY | | | SCAC3 |
| 9 | PIEH | PIEHL, H TRANSFER | | | SCAC4 |
| 10 | PIEJ | PIERCE, J F & ASSOCIATES | | | SCAC3 |
| 11 | PIEK | PIONEER EXPRESS | | | SCAC3 |
| 12 | PIEN | PIERSON, J W CO | | | SCAC4 |
| 13 | PIEO | PRIETO & SON TRANSPORTATION INC | | | SCAC3 |
| 14 | PIEO | PINE LAND FARMS LTD | | | SCAC4 |
| 15 | PIEP | PIER EXPRESS INC | | | SCAC4 |
| 16 | PIEQ | PIEDMONT MOVERS INCORPORATED | | | SCAC3 |
| 17 | PIES | PIER SERVICE | | | SCAC3 |
| 18 | PIESBERG | Piesberger Steinindustrie | | D | TRAFFIC |
| 19 | PIEV | PINSON EXPRESS INC | | | SCAC3 |
