| 1 | PTQ | Port Townsend Airways | Callsign: Townsend, | AUS | AVCODES |
| 2 | PTQ | Port Townsend Airways | | | ICAO1 |
| 3 | PTQA | PEOPLES TRANSIT | | | SCAC4 |
| 4 | PTQB | POTTLES TRANSPORTATION LLC (BROKERA | | | SCAC4 |
| 5 | PTQC | PARKINS TRUCKING LLC | | | SCAC4 |
| 6 | PTQD | PEARL TRANSPORT INC | | | SCAC4 |
| 7 | PTQE | PRESTAN TRANSPORT INC | | | SCAC4 |
| 8 | PTQF | PARKER TRUCKING SERVICES INC | | | SCAC4 |
| 9 | PTQG | PTI LOGISTICS LLC | | | SCAC4 |
| 10 | PTQH | PRITAM TRANSPORT LTD | | | SCAC4 |
| 11 | PTQK | PETERS TRUCKING INC | | | SCAC3 |
| 12 | PTQK | PETERS TRUCKING INC | | | SCAC4 |
| 13 | PTQL | PORTER TRUCKING LTD | | | SCAC3 |
| 14 | PTQM | P T MOVING INC | | | SCAC4 |
| 15 | PTQP | PRO TRAILER REPAIR INC | | | SCAC4 |
| 16 | PTQS | PINELANDS TRANSPORTATION SERVICES I | | | SCAC3 |
| 17 | PTQT | POTTER TRUCKING | | | SCAC3 |
| 18 | PTQV | PURE TECHNOLOGIES LTD | | | SCAC4 |
