| 1 | PRH | Pro Air, Inc. | IATA: P9, Callsign: Prohawk, Ceased operations on 18 September 2000. IATA desigantor changes from XL* | USA | AVCODES |
| 2 | PRH | Pro Air, Inc. | IATA: XL, Callsign: Prohawk, IATA desigantor changes to P9 | USA | AVCODES |
| 3 | PRH | Pro Air | | | ICAO1 |
| 4 | PRHA | PRECAST HAULERS INC | | | SCAC4 |
| 5 | PRHB | PRO COURIER INC | | | SCAC4 |
| 6 | PRHC | PARRISH CARRIAGE INC | | | SCAC3 |
| 7 | PRHE | PRICE & HENDERSON INC | | | SCAC3 |
| 8 | PRHF | P & R FREIGHT SOLUTIONS LLC | | | SCAC4 |
| 9 | PRHG | PIONEER SHIPPING INC | | | SCAC3 |
| 10 | PRHI | PRENTICE-HALL INC | | | SCAC3 |
| 11 | PRHK | PARRISH TRUCKING INC | | | SCAC3 |
| 12 | PRHK | PARRISH TRUCKING INC | | | SCAC4 |
| 13 | PRHL | PRETTYMAN, HAROLD LEROY | | | SCAC3 |
| 14 | PRHL | PACIFIC RADIATOR MFG LTD | | | SCAC4 |
| 15 | PRHN | PARRISH TRANSPORTATION | | | SCAC3 |
| 16 | PRHO | PROTHO EXPRESS INC | | | SCAC3 |
| 17 | PRHO | PREMIER HORTICULTURE | | | SCAC4 |
| 18 | PRHP | PRO-TECH | | | SCAC4 |
| 19 | PRHQ | PIERSON, RICHARD E MATERIALS CORP | | | SCAC4 |
| 20 | PRHS | PACIFIC RESOURCES INC | | | SCAC3 |
| 21 | PRHT | PRUITT, H TRUCKING INC | | | SCAC3 |
