| LBT | KLBT | Lumberton Regional Airport | Lumberton | |
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| LYH | KLYH | Lynchburg Regional Preston Glenn Field | Lynchburg | |
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| EUG | KEUG | Mahlon Sweet Field | Eugene | |
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| SSI | KSSI | Malcolm McKinnon Airport | Brunswick | |
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| MHK | KMHK | Manhattan Regional Airport | Manhattan | |
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| MFD | KMFD | Mansfield Lahm Regional Airport | Mansfield | |
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| FRI | KFRI | Marshall Army Air Field | Fort Riley | |
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| MLL | PADM | Marshall Don Hunter Sr Airport | Marshall | |
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| MCW | KMCW | Mason City Municipal Airport | Mason City | |
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| MSS | KMSS | Massena International Richards Field | Massena | |
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| MFE | KMFE | Mc Allen Miller International Airport | McAllen | |
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| MCC | KMCC | Mc Clellan Airfield | - | |
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| CLD | KCRQ | Mc Clellan-Palomar Airport | - | |
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| MCB | KMCB | Mc Comb/Pike County Airport/John E Lewis Field | Mccomb | |
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| IAB | KIAB | Mc Connell Air Force Base | - | |
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| MCK | KMCK | Mc Cook Ben Nelson Regional Airport | McCook | |
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| MMT | KMMT | Mc Entire Joint National Guard Base | - | |
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| WRI | KWRI | Mc Guire Air Force Base | Wrightstown | |
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| MKL | KMKL | Mc Kellar Sipes Regional Airport | Jackson | |
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| MYL | KMYL | McCall Municipal Airport | Mccall | |
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| MCG | PAMC | McGrath Airport | McGrath | |
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| BFL | KBFL | Meadows Field | Bakersfield | |
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| MYU | PAMY | Mekoryuk Airport | Mekoryuk | |
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| MLB | KMLB | Melbourne International Airport | Melbourne | |
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| HOT | KHOT | Memorial Field | Hot Springs | |
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| MCE | KMCE | Merced Regional Macready Field | Merced | |
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| BLF | KBLF | Mercer County Airport | Princeton | |
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| CDV | PACV | Merle K (Mudhole) Smith Airport | Cordova | |
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| MRI | PAMR | Merrill Field | - | |
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| GLH | KGLH | Mid Delta Regional Airport | Greenville | |
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| PKB | KPKB | Mid Ohio Valley Regional Airport | Parkersburg | |
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| MCN | KMCN | Middle Georgia Regional Airport | Macon | |
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| MAF | KMAF | Midland International Airport | Midland | |
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| BPI | KBPI | Miley Memorial Field | Big Piney | |
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| VTN | KVTN | Miller Field | Valentine | |
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| NQA | KNQA | Millington Regional Jetport Airport | - | |
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| MOT | KMOT | Minot International Airport | Minot | |
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| NKX | KNKX | Miramar Marine Corps Air Station - Mitscher Field | - | |
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| LVM | KLVM | Mission Field | Livingston | |
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| MSO | KMSO | Missoula International Airport | Missoula | |
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| BFM | KBFM | Mobile Downtown Airport | - | |
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| MBG | KMBG | Mobridge Municipal Airport | Mobridge | |
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| MOD | KMOD | Modesto City Co-Harry Sham Field | Modesto | |
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| MKK | PHMK | Molokai Airport | Hoolehua | |
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| BMG | KBMG | Monroe County Airport | Bloomington | |
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| MRY | KMRY | Monterey Peninsula Airport | Monterey | |
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| MTJ | KMTJ | Montrose Regional Airport | Montrose | |
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| VAD | KVAD | Moody Air Force Base | - | |
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| MGW | KMGW | Morgantown Municipal Walter L. Bill Hart Field | Morgantown | |
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| MMU | KMMU | Morristown Municipal Airport | Morristown | |
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