| 1 | MLX | Malawi Express Limited | Callsign: Malawi Express, | MW | AVCODES |
| 2 | MLX | Malawi Express | | | ICAO1 |
| 3 | MLX | Master Lubricants Co. | 4/1938-4/1961; eliminated 7/1963 | | NAKINA |
| 4 | MLX | Master Lubricants Co. | 4/38-4/61; eliminated 7/63 | | NRHS |
| 5 | MLX | MASTER LUBRICANTS CO. | | | PWRC |
| 6 | MLXB | M & L TRANSPORT OF PA LLC | | | SCAC4 |
| 7 | MLXC | MALLARD EXPRESS LLC | | | SCAC4 |
| 8 | MLXE | MILAN EXPRESS CO INC (TRUCKLOAD DIV | | | SCAC4 |
| 9 | MLXH | MELLENIA TRANSPORT | | | SCAC4 |
| 10 | MLXI | MCLX INC | | | SCAC4 |
| 11 | MLXJ | MILLER, J EXPRESS INC | | | SCAC4 |
| 12 | MLXK | MANILA EXPRESS LOGISTICS INC | | | SCAC4 |
| 13 | MLXL | METAL TRANSPORT LLC | | | SCAC4 |
| 14 | MLXM | MILLER TRANSPORTATION | | | SCAC4 |
| 15 | MLXN | MILES TRANSPORTATION LLC | | | SCAC4 |
| 16 | MLXO | MCLEOD EXPRESS LLC | | | SCAC4 |
| 17 | MLXP | MILAN EXPRESS CO | | | SCAC1 |
| 18 | MLXP | MILAN EXPRESS CO INC | | | SCAC4 |
| 19 | MLXQ | MILLER TRANSPORT | | | SCAC4 |
| 20 | MLXS | M & L EXPRESSWAY INC | | | SCAC4 |
| 21 | MLXT | MULLINAX TRANSPORT COMPANY INC | | | SCAC4 |
| 22 | MLXV | MILLS, R E TRANSPORTATION SERVICES | | | SCAC4 |
