| MAA | VOMM | Chennai/Madras - Meenambakam Airport, India |
| MAD | LEMD | Madrid - Barajas Airport, Spain |
| MAF | KMAF | Midland International Airport, United States |
| MAH | LEMH | Menorca Airport, Spain |
| MAJ | PKMJ | Amata Kabua International Airport, Pac.Is, Marshall Islands |
| MAM | MMMA | Matamoros - General Servando Canales International Airport, Mexico |
| MAN | EGCC | Manchester Airport, United Kingdom |
| MAO | SBEG | Manaus - Eduardo Gomes Int´l Airport, Brazil |
| MAR | SVMC | Maracaibo-La Chinita Airport, Venezuela |
| MBA | HKMO | Mombasa - Moi Int´l Airport, Kenya |
| MBD | FAMM | Mmabatho International Airport, South Africa |
| MBJ | MKJS | Montego Bay - Sangster International Airport, Carib,Jamaica |
| MBW | YMMB | Moorabbin Airport, Australia |
| MBX | LJMB | Maribor Aerodrom, Slovenia |
| MCI | KMCI | Kansas City International Airport, United States |
| MCM | LNMC | Monaco Heliport, Monaco |
| MCO | KMCO | Orlando International Airport, United States |
| MCP | SBMQ | Macapa International Airport, Brazil |
| MCT | OOMS | Muscat-Seeb International Airport, Oman |
| MCV | LECU | Madrid - Cuatro Vientos Airport, Spain |
| MCW | KMCW | Mason City Municipal Airport, United States |
| MCZ | SBMO | Maceio - Zumbi dos Palmares Airport, Brazil |
| MDC | WAMM | Manado - Sam Ratulangi Airport, Indonesia |
| MDE | SKRG | Medellin - Jose Maria Cordova Airport, Colombia |
| MDK | FZEA | Mbandaka Airport, Congo DR |
| MDL | VYMD | Mandalay International Airport, Myanmar |
| MDQ | SAZM | Mar Del Plata International Airport, Argentina |
| MDT | KMDT | Harrisburg International Airport, United States |
| MDW | KMDW | Chicago Midway Airport, United States |
| MDZ | SAME | Mendoza - El Plumerillo Airport, Argentina |
| MEB | YMEN | Essendon Airport, Australia |
| MED | OEMA | Madinah - Prince Mohammad Bin Abdulaziz Airport, Saudi Arabia |
| MEI | KJYD | Meridian Regional-Key Field Airport, United States |
| MEL | YMML | Melbourne - Tullamarine Airport, Australia |
| MEM | KMEM | Memphis International Airport, United States |
| MES | WIMM | Medan - Polonia Airport, Indonesia |
| MEX | MMMX | Mexico City International Airport - Benito Juárez, Mexico |
| MFE | KMFE | McAllen - Miller International Airport, United States |
| MFM | VMMC | Macau International Airport, Macau |
| MFU | FLMF | Mfuwe Airport, Zambia |
| MGA | MNMG | Managua International Airport (AIM), Nicaragua |
| MGL | EDLN | Düsseldorf - Mönchengladbach Airport, Germany |
| MGQ | HCMM | Mogadishu International Airport, Somalia |
| MGW | KMGW | Morgantown Municipal - Walter L Bill Hart Airpor, United States |
| MHQ | EFMA | Mariehamn Airport, Finland |
| MHR | KMHR | Sacramento Mather Airport, United States |
| MHT | KMHT | Manchester Airport, United States |
| MIA | KMIA | Miami International Airport, United States |
| MID | MMMD | Merida - Licenciado Manuel Crecencio Rejon Int´l Airport, Mexico |
| MIK | EFMI | Mikkeli City Airport, Finland |
| MIR | DTMB | Monastir - Habib Bourguiba International Airport, Tunisia |
| MJN | FMNM | Majunga - Amborovy Airport, Madagascar |
| MJT | LGMT | Mitilini Airport, Greece |
| MJV | LELC | Murcia - San Javier Airport, Spain |
| MKC | KMKC | Kansas City - Charles B Wheeler Downtown Airport, United States |
| MKE | KMKE | Milwaukee - General Mitchell Int´l Airport, United States |
| MKY | ABMK | Mackay Airport, Australia |
| MKZ | WMKM | Melaka - Batu Berendam Airport, Malaysia |
| MLA | LMML | Malta Int´l Airport, Malta |
| MLB | KMLB | Melbourne Int´l Airport, United States |
| MLE | VRMM | Male International Airport, Maldives |
| MLH | LFSB | Basel/Mulhouse Airport, France |
| MLI | KMLI | Moline - Quad City International Airport, United States |
| MLN | GEML | Melilla Airport, Spain |
| MLZ | SUMO | Melo - Aeropuerto Int´l de Cerro Largo, Uruguay |
| MME | EGNV | Durham Tees Valley Airport, United Kingdom |
| MMJ | RJAF | Matsumoto Airport, Japan |
| MMK | ULMM | Murmansk Airport, Russia |
| MMX | ESMS | Malmö - Sturup Airport, Sweden |
| MNI | TRPM | Gerald´s Airport, Carib,Montserrat |
| MNL | RPLL | Manila - Ninoy Aquino Int´l Airport, Philippines |
| MOB | KMOB | Mobile Regional Airport, United States |
| MOD | KMOD | Modesto City County Airport, United States |
| MOL | ENML | Molde Airport, Norway |
| MOT | KMOT | Minot International Airport, United States |
| MOZ | NTTM | Moorea Airport, Pac.Is, French Polynesia |
| MPL | LFMT | Montpellier - Mediterranée Aéroport, France |
| MPM | FQMA | Maputo International Airport, Mozambique |
| MPN | EGYP | Stanley - Mount Pleasant Airport, Falkland Islands |
| MQV | SVMI | Caracas - Simon Bolivar International Airport, Venezuela |
| MRS | LFML | Marseille/Provence Airport, France |
| MRU | FIMP | Sir Seewoosagur Ramgoolam International Airport, Mauritius |
| MSE | EGMH | Kent International Airport, United Kingdom |
| MSJ | RJSM | Misawa Airport, Japan |
| MSN | KMSN | Dane County Regional Airport, United States |
| MSO | KMSO | Missoula Int´l - Johnson-Bell Field Airport, United States |
| MSP | KMSP | Minneapolis-St Paul Int´l Airport, United States |
| MSQ | UMMS | Minsk International Airport, Belarus |
| MSR | EDDG | Münster-Osnabrück International Airport, Germany |
| MST | EHBK | Maastricht Aachen Airport, Netherlands |
| MSU | FXMM | Maseru-Moshoeshoe 1 Airport, Lesotho |
| MSY | KMSY | New Orleans - Louis Armstrong International Airport, United States |
| MTH | KMTH | Marathon Airport, United States |
| MTS | FDMS | Manzini - Matsapha Airport, Swaziland |
| MTY | MMMY | Monterrey Airport, Mexico |
| MUB | FBMN | Maun Airport, Botswana |
| MUC | EDDM | Munich International Airport, Germany |
| MUD | SUMU | Montevideo - Carrasco International Airport, Uruguay |
| MUX | OPMT | Multan International Airport, Pakistan |
| MVB | FOON | Franceville - Mvengue Airport, Gabon |
| MVR | FKKL | Maroua-Salak Airport, Cameroon |
| MWH | KMWH | Grant County International Airport, United States |
| MXP | LIMC | Milan - Malpensa Airport, Italy |
| MXX | ESKM | Mora - Siljan Airport, Sweden |
| MYJ | RJOM | Matsuyama Airport, Japan |
| MYR | KMYR | Myrtle Beach International Airport, United States |
| MYY | WBGR | Miri Airport, Malaysia |
| MZO | MUMZ | Manzanillo-Sierra Maestra Int´l Airport, Carib,Cuba |
| MZR | OAMS | Mazar I Sharif Airport, Afghanistan |
| MZT | MMMZ | Mazatlan - General Rafael Buelna International Airport, Mexico |
