| 1 | MRK | Markair, Inc. | IATA: BF, Callsign: Interalas, Name changed from Alaska International Air, Inc. | USA | AVCODES |
| 2 | MRK | Markair | | | ICAO1 |
| 3 | MRKA | MONTANA ROSE EXPRESS LLC | | | SCAC4 |
| 4 | MRKE | MARK LINE DISTRIBUTORS INC | | | SCAC4 |
| 5 | MRKF | MERKL FARMS | | | SCAC4 |
| 6 | MRKG | MASTER TRUCKING LTD | | | SCAC4 |
| 7 | MRKI | MERIT TRUCKING CO | | | SCAC4 |
| 8 | MRKJ | MARK IV TRANSPORTATION & LOGISTICS | | | SCAC4 |
| 9 | MRKK | MARS TRUCKING INC | | | SCAC4 |
| 10 | MRKL | MARKELL TRANSPORT LTD | | | SCAC4 |
| 11 | MRKM | MARKSM | | | SCAC4 |
| 12 | MRKN | MR TRUCKING INC | | | SCAC4 |
| 13 | MRKP | MARCO TRANSPORT INC | | | SCAC4 |
| 14 | MRKQ | MATTRACKS INC | | | SCAC4 |
| 15 | MRKS | MERIKANS | | | SCAC4 |
| 16 | MRKT | MARKTECH | | | SCAC4 |
| 17 | MRKU | MAERSK A/S | | DK | BIC |
| 18 | MRKU | A P MOLLER | | | SCAC4 |
| 19 | MRKV | MORA TRUCKING INC | | | SCAC4 |
| 20 | MRKW | MARINA TANKER CORPORATION | | | SCAC4 |
