| - | KHBC | Mohall Municipal | Mohall | |
| ECS | KECS | Mondell Field | Newcastle | |
| - | - | Monett Municipal | Monett | |
| - | - | Monmouth Municipal | Monmouth | |
| - | - | Monona Municipal | Monona | |
| - | KEQY | Monroe | Monroe | |
| - | - | Monroe Co | Woodsfield | |
| - | - | Monroe Co | Aberdeen-Amory | |
| - | KMNV | Monroe Co | Madisonville | |
| MVC | KMVC | Monroe County Airport | Monroeville | |
| - | - | Monroe-Walton Co | Monroe | |
| - | KMVI | Monte Vista Municipal | Monte Vista | |
| MVE | KMVE | Montevideo Municipal Airport | Montevideo | |
| - | - | Montgomery | Forest | |
| - | - | Montgomery Co | Star | |
| MGY | - | Montgomery County Airport | Dayton | |
| - | - | Montgomery-Wehrman | Montgomery City | |
| - | - | Monticello | Monticello | |
| MXO | KMXO | Monticello Municipal Airport | Monticello | |
| - | KLLQ | Monticello Municipal/Ellis | Monticello | |
| QMV | - | Montvale Airport | Montvale | |
| - | - | Monument Municipal | Monument | |
| GMV | - | Monument Valley Airport | Monument Valley Gouldings | |
| MVM | - | Monument Valley Airport | Kayenta | |
| VAD | KVAD | Moody Air Force Base | Valdosta | |
| - | - | Moontown | Huntsville | |
| - | - | Moore | Lexington | |
| - | KDUX | Moore Co | Dumas | |
| MDF | KMDF | Mooreland Municipal | Mooreland | |
| - | - | Moores | Degrasse | |
| - | - | Moorestown | Moorestown | |
| - | - | Moorhead | North East | |
| - | KJKJ | Moorhead Municipal | Moorhead | |
| - | - | Moose Creek Usfs | Moose Creek Ranger Stn | |
| - | KMZH | Moose Lake/Carlton Co | Moose Lake | |
| - | KJMR | Mora Municipal | Mora | |
| - | - | Moraine Air Park | Dayton | |
| - | - | Morehead-Rowan Co | Morehead | |
| - | - | Morehouse Memorial | Bastrop | |
| CFT | KCFT | Morenci Airport | Clifton | |
| - | - | Morey'S | Motley | |
| - | - | Morgan | Morgan | |
| - | - | Morgan Co | Morgan | |
| - | - | Morgan Co | Mc Connelsville | |
| - | - | Morgantown | Morgantown | |
| - | - | Moriarty | Moriarty | |
| - | - | Morningstar | Des Moines | |
| - | KBDQ | Morrilton Municipal | Morrilton | |
| FOP | - | Morris Army Air Field | Forest Park | |
| - | - | Morris Mun-Washburn | Morris | |