| PSB | KPSB | Mid-State Airport | Philipsburg | |
| - | KJWY | Mid-Way | Midlothian/Waxahachie | |
| - | - | Middle Bass-East Point Airport | Middle Bass I | |
| - | KFYJ | Middle Peninsula Regional | West Point | |
| - | - | Middlebury State | Middlebury | |
| - | - | Middlesboro-Bell Co | Middlesboro | |
| - | - | Middlesex Valley | Middlesex | |
| - | KGZH | Middleton | Evergreen | |
| MDO | PAMD | Middleton Island Intermediate Airport | Middleton Island | |
| - | - | Midlakes | Gorham | |
| - | - | Midway | Albion | |
| - | - | Midway | Atomic City | |
| - | KGPH | Midwest National Air Center Airport | Mosby | |
| RED | KRVL | Mifflin County Airport | Reedsville | |
| - | - | Mifflintown | Mifflintown | |
| - | - | Mignon Laird Municipal | Cheyenne | |
| - | - | Mikeska | Brookshire | |
| - | - | Milaca Municipal | Milaca | |
| GNT | KGNT | Milan Airport | Grants | |
| - | - | Milbank Municipal | Milbank | |
| BPI | KBPI | Miley Memorial Field | Big Piney | |
| MLF | KMLF | Milford Airport | Milford | |
| - | - | Millard | Annville | |
| - | - | Millen | Millen | |
| - | - | Miller | Dalhart | |
| - | - | Miller | Alliance | |
| - | - | Miller | Bluffton | |
| - | - | Miller | Burgettstown | |
| - | KRYM | Miller Aaf | Camp Ripley | |
| - | - | Miller Farm | Baltimore | |
| - | - | Miller Memorial | Vale | |
| - | KMKA | Miller Municipal | Miller | |
| - | - | Mills | Mantua | |
| - | - | Milnor Municipal | Milnor | |
| - | - | Mina | Mina | |
| - | - | Minden-Webster | Minden | |
| - | - | Mineola Wisener | Mineola | |
| - | - | Mineral Co | Superior | |
| - | - | Mineral Co Memorial | Creede | |
| MWL | KMWL | Mineral Wells Airport | Mineral Wells | |
| - | - | Mingo Co | Williamson | |
| - | - | Minneapolis City Co | Minneapolis | |
| JDT | - | Minneapolis Downtown Heliport | Minneapolis | |
| MIT | KMIT | Minter Field | Shafter | |
| - | - | Minto Municipal | Minto | |
| - | - | Mishawaka Pilots Club | Elkhart | |
| - | - | Mission Sioux | Mission | |
| - | KCHQ | Mississippi Co | Charleston | |
| MBY | KMBY | Moberly Airport | Moberly | |
| - | - | Modisett | Rushville | |