- Morrison FieldIdent: 25OIServes: Bristolville
- Morrison FieldIdent: 48NCServes: Lexington
- Morrison's AirportIdent: ME88Serves: Perry
- Morrisonville International AirportIdent: WN85Serves: Morrisonville
- Morristown Regional AirportIdent: KMORServes: Morristown
- Morrisville-Stowe State AirportIdent: KMVLServes: Morrisville
- Morrow County AirportIdent: K4I9Serves: Mount Gilead
- Morrow StripIdent: 1LA5Serves: Morrow
- Mort's Landing AirportIdent: 0WI1Serves: Comstock
- Morten AirportIdent: 62NDServes: Larimore
- Mortimer Brown LandingIdent: 1VT8Serves: Castleton
- Morton AirportIdent: IS55Serves: La Harpe
- Morton Field Ultralight FlightparkIdent: AZ00Serves: Dateland
- Morton's AirportIdent: PS64Serves: Cambridge Springs
- Moseley FieldIdent: 4KY4Serves: Calhoun
- Moser AirstripIdent: NA54Serves: Westfield
- Moses Lake Municipal AirportIdent: W20Serves: Moses Lake
- Moss Hill AirportIdent: 6NC9Serves: Kinston
- Moss Meadows AirportIdent: 45FLServes: Live Oak
- Mossburg AirportIdent: II20Serves: Liberty Center
- Moton Field Municipal AirportIdent: K06AServes: Tuskegee
- Motown AirportIdent: 5AZ6Serves: Mobile
- Mott Municipal AirportIdent: K3P3Serves: Mott
- Moultrie Municipal AirportIdent: KMGRServes: Moultrie
- Mound Valley Farm AirportIdent: OK77Serves: Hydro
- Moundridge Municipal AirportIdent: K47KServes: Moundridge
- Moundville AirportIdent: L44Serves: Moundville
- Mount Aero Lake Farm AirportIdent: 2AL7Serves: Hanceville
- Mount Airy Surry County AirportIdent: KMWKServes: Mount Airy
- Mount Carmel Municipal AirportIdent: KAJGServes: Mount Carmel
- Mount Cove STOLportIdent: 7GA5Serves: Kensington
- Mount Hawley Auxiliary AirportIdent: K3MYServes: Peoria
- Mount Holly AirportIdent: SC98Serves: Goose Creek
- Mount Horeb FieldIdent: 06VAServes: Grottoes
- Mount Olive Farm AirportIdent: 2FA9Serves: Lamont
- Mount Olive Municipal AirportIdent: KW40Serves: Mount Olive
- Mount Pleasant Landing StripIdent: 67NJServes: Columbia
- Mount Pleasant Municipal AirportIdent: KMOPServes: Mount Pleasant
- Mount Pleasant Municipal AirportIdent: KMPZServes: Mount Pleasant
- Mount Pleasant Regional AirportIdent: KOSAServes: Mount Pleasant
- Mount Pleasant Regional Airport Faison FieldIdent: KLROServes: Mount Pleasant
- Mount Pleasant/Scottdale AirportIdent: P45Serves: Mount Pleasant
- Mount Royal AirportIdent: 3FL0Serves: Welaka
- Mount Sharp AirparkIdent: TT35Serves: Wimberley
- Mount St Helens Aero Ranch AirportIdent: WN10Serves: Ariel
- Mount Sterling Montgomery County AirportIdent: KIOBServes: Mount Sterling
- Mount Sterling Municipal AirportIdent: KI63Serves: Mount Sterling
- Mount Up with Wings AirparkIdent: 28FLServes: Cresent City
- Mount Vernon Municipal AirportIdent: K2MOServes: Mount Vernon
- Mount Vernon Outland AirportIdent: KMVNServes: Mount Vernon
- Mount Washington Regional AirportIdent: KHIEServes: Whitefield
- Mountain Air AirportIdent: 2NC0Serves: Burnsville
- Mountain AirparkIdent: 0GE5Serves: Cleveland
- Mountain Bay Air Park Inc AirportIdent: PA49Serves: Greentown
- Mountain Crest AirportIdent: 17PSServes: Tidioute
- Mountain Empire AirportIdent: KMKJServes: Rural Retreat
- Mountain Grove Memorial AirportIdent: K1MOServes: Mountain Grove
- Mountain Hide-Away AirportIdent: 3PS4Serves: Millcreek
- Mountain Home Municipal AirportIdent: KU76Serves: Mountain Home
- Mountain Ridge AirportIdent: 25SCServes: Taylors