| - | - | Mahnomen Co | Mahnomen | |
| - | - | Mahoney Creek Usfs | Mahoney Creek | |
| - | - | Maidens | Williamston | |
| - | - | Maize | Wichita | |
| MLD | KMLD | Malad City Airport | Malad City | |
| MAW | KMAW | Malden Airport | Malden | |
| - | - | Maley | Shinnston | |
| - | - | Malin | Malin | |
| - | - | Mallard | York | |
| GFA | - | Malmstrom Air Force Base | Great Falls | |
| - | KMAL | Malone-Dufort | Malone | |
| - | - | Malta | Malta | |
| MLK | KMLK | Malta | Malta | |
| - | - | Malvern Municipal | Malvern | |
| - | - | Mancelona Municipal | Mancelona | |
| - | - | Manchester Municipal | Manchester | |
| - | - | Mandan Municipal | Mandan | |
| - | - | Manila | Manila | |
| MXA | KMXA | Manila Municipal Airport | Manila | |
| - | - | Manito Mitchell | Manito | |
| - | - | Manitowish Waters | Manitowish Waters | |
| MTW | KMTW | Manitowoc Municipal Airport | Manitowoc | |
| - | KTKO | Mankato | Mankato | |
| MKT | KMKT | Mankato Municipal Airport | Mankato | |
| JMN | - | Mankato Municipal Heliport | Mankato | |
| - | - | Manning | Jefferson | |
| - | - | Mansfield | Mansfield | |
| - | - | Mansfield Municipal | Mansfield | |
| - | - | Mansfield Municipal | Mansfield | |
| NTJ | - | Manti-Ephraim Airport | Manti | |
| - | - | Maple Grove | Fowlerville | |
| - | KMGG | Maple Lake Municipal | Maple Lake | |
| - | - | Maples | Canyon | |
| - | KOQW | Maquoketa Municipal | Maquoketa | |
| MYH | - | Marble Canyon Airport | Marble Canyon | |
| - | - | Marceline Municipal | Marceline | |
| - | - | Marcy | Keene | |
| RTE | - | Marguerite Bay Airport | Marguerite Bay | |
| - | - | Marian | Wellington | |
| - | KMAI | Marianna Municipal | Marianna | |
| JMC | - | Marin County Airport | Sausalito | |
| - | KOAR | Marina | Marina | |
| OAR | - | Marina Municipal Airport | Monterey | |
| - | - | Marine City | Marine City | |
| - | - | Marion | Marion | |
| MZZ | KMZZ | Marion Airport | Marion | |
| - | - | Marion Co | Buena Vista | |
| - | KMAO | Marion Co | Marion | |
| APT | KAPT | Marion County Airport | Jasper | |
| HAB | KHAB | Marion County Airport | Hamilton | |