| 1 | MFL | Aero Mcfly, S.A. de C.V. | Callsign: Mcfly, | MEX | AVCODES |
| 2 | MFL | Aero McFly | | | ICAO1 |
| 3 | MFLA | MERCURY FREIGHT LINES INC | | | PWRC |
| 4 | MFLC | MOORE FREIGHT LINES INC | | | SCAC4 |
| 5 | MFLD | MAYFIELD TRANSFER CO INC | | | SCAC4 |
| 6 | MFLE | MULTI REFLECTION SA PANAMA | | | SCAC4 |
| 7 | MFLG | MCLAUGHLIN FREIGHT LINES INC | | | SCAC4 |
| 8 | MFLH | MORSAN FARMS LTD | | | SCAC4 |
| 9 | MFLI | MARATHON FREIGHT LINES CORP | | | SCAC4 |
| 10 | MFLJ | MAGELLAN FREIGHT LINES LLC | | | SCAC4 |
| 11 | MFLK | MIDWEST FREIGHTWAY LLC | | | SCAC4 |
| 12 | MFLL | MOTONAVES FLORIDA LINES | | | PWRC |
| 13 | MFLL | MODERN FORWARDING LLC | | | SCAC4 |
| 14 | MFLM | MCBRYOTT FARMS LTD | | | SCAC4 |
| 15 | MFLO | MOLLGAARD FLORAL | | | SCAC4 |
| 16 | MFLR | MCFARLANE TRANSPORT LLC | | | SCAC4 |
| 17 | MFLU | MEDECINS SANS FRONTIERES LOGISTIQUE | | F | BIC |
| 18 | MFLV | MITCHELLS FREIGHT LLC | | | SCAC4 |
| 19 | MFLW | MCVICAR FARMS LTD | | | SCAC4 |
| 20 | MFLX | McColl-Frontenac Oil Co., Ltd. | 7/1930-7/1954; eliminated 1/1956 | | NAKINA |
| 21 | MFLX | McColl-Frontenac Oil Co., Ltd. | 4/38-1/52 | | NRHS |
| 22 | MFLX | MCCOLL-FRONTENAC OIL CO., LTD. | | | PWRC |
