| - | KEFT | Monroe Municipal Airport | Monroe | |
| MLU | KMLU | Monroe Regional Airport | Monroe | |
| MTP | KMTP | Montauk Airport | Montauk Point | |
| CEZ | KCEZ | Montezuma County Airport | Cortez | |
| GAI | KGAI | Montgomery County Airpark | Gaithersburg | |
| MYF | KMYF | Montgomery Field | San Diego | |
| MGM | KMGM | Montgomery Regional Airport-Dannelly Field | Montgomery | |
| MTJ | KMTJ | Montrose Regional Airport | Montrose | |
| SOP | KSOP | Moore County Airport | Southern Pines | |
| MOR | KMOR | Moore-Murrell Airport | Morristown | |
| MGW | KMGW | Morgantown Airport | Morgantown | |
| MMU | KMMU | Morristown Municipal Airport | Morristown | |
| MVL | KMVL | Morrisville-Stowe Airport | Stowe | |
| KMY | - | Moser Bay Seaplane Base | Moser Bay | |
| MOP | KMOP | Mount Pleasant Municipal Airport | Mount Pleasant | |
| MVN | KMVN | Mount Vernon Airport | Mount Vernon | |
| HIE | KHIE | Mount Washington Regional Airport | Whitefield | |
| MUO | KMUO | Mountain Home Air Force Base | Mountain Home | |
| MOU | - | Mountain Village Airport | Mountain Village | |
| - | KMQJ | Mt Comfort Airport | Indianapolis | |
| CDV | PACV | Mudhole Smith Airport | Cordova | |
| EKA | KEKA | Murray Field | Eureka | |
| MKG | KMKG | Muskegon Airport | Muskegon | |
| KEB | - | Nanwalek Airport | Nanwalek | |
| APC | KAPC | Napa County Airport | Napa | |
| WNA | - | Napakiak Sea Plane Base | Napakiak | |
| PKA | - | Napaskiak Sea Plane Base | Napaskiak | |
| APF | KAPF | Naples Municipal Airport | Naples | |
| NIP | KNIP | NAS (Towers Field) | Jacksonville | |
| NKI | - | Naukiti Bay Sea Plane Base | Naukiti | |
| NQX | KNQX | Naval Air Station Key West | Key West | |
| NPA | KNPA | Naval Air Station Pensacola | Pensacola | |
| NTD | KNTD | Naval Base Ventura County | Oxnard | |
| NGU | KNGU | Naval Station Norfolk | Norfolk | |
| LSV | KLSV | Nellis Air Force Base | Las Vegas | |
| NLG | - | Nelson Lagoon Airport | Nelson Lagoon | |
| EWB | KEWB | New Bedford Airport | New Bedford | |
| ILG | KILG | New Castle Airport | Wilmington | |
| JCI | KIXD | New Century Aircenter | Kansas City | |
| NCN | - | New Chenega Airport | New Chenega | |
| HVN | KHVN | New Haven Airport | New Haven | |
| PSK | KPSK | New River Valley Airport | Dublin | |
| - | KEVB | New Smyrna Beach Municipal Airport | New Smyrna Beach | |
| KNW | PANW | New Stuyahok Airport | New Stuyahok | |
| - | KVTA | Newark Heath Airport | Newark | |
| ESN | KESN | Newnam Field | Easton | |
| - | KCCO | Newnan-Coweta County Airport | Newnan | |
| ONP | KONP | Newport Airport | Newport | |
| PHF | KPHF | Newport News/Williamsburg International Airport | Newport News | |
| EFK | KEFK | Newport State Airport | Newport | |