This is a list of all airline codes. The table lists the IATA airline designators, the ICAO airline designators and the airline call signs (telephony designator). Historical assignments are also included for completeness.
| IATA | ICAO | Airline | Call sign | Country | Comments |
|---|---|---|---|---|---|
| Q2 | DQA | Maldivian (airline) | SKYSURFER | Maldives | |
| MMH | McMahon Helicopter | NIGHT RIDER | United States | 2015[1] | |
| HOG | Mahogany Air Charters | HOGAN AIR | Zambia | 2014[2] | |
| MTS | Med Jets | MED SERVICE | Mexico | 2014[2] | |
| MSF | Minsheng International Jet | MEINSHENG | China | 2014[2] | |
| MXS | Millon Express | MILLON EXPRESS | United States | Trading name for Sunrise Airlines allocated in 2014[3] | |
| MHF | Maritime Helicopters | AIR MARITIME | United States | Allocated 2014[4] | |
| BF | MRK | MarkAir | MARKAIR | United States | 1984-1995 |
| WD | MWM | Modern Transporte Aereo De Carga | MODERNAIR | Brazil | |
| MSJ | Magnum Air | MAGNUM AIR | Philippines | ||
| MWI | Malawian Airlines 2014 | MALAWIAN | Malawi | ||
| MYP | Mann Yadanarpon Airlines | MANN ROYAL | Myanmar | ||
| RDK | Memorial Hermann Hospital System | RED DUKE | United States | Houston, Texas | |
| MLV | Multiservicios Aereos Del Valle | MULTI VALLE | Mexico | ||
| MMJ | Macau Jet International | MACAUJET | China | ||
| MXF | Maximum Flight Advantages | MAXFLIGHT | United States | ||
| OD | MXD | Malindo Airways | MALINDO EXPRESS | Malaysia | |
| MJC | Mandarin Air | AIR MANDA | China | ||
| PLG | MBK-S | PILGRIM | Russia | ||
| DZR | Midwest Aviation | DOZER | United States | ||
| MSN | Milenium Air Servicios Aereos Integrados | Mexico | |||
| MFB | Mountain Flyers 80 | MOUNTAINHELI | Switzerland | ||
| HTL | My Fair Jet | HOTLINE | Austria | ||
| JNH | M & N Aviation | JONAH | United States | ||
| MCF | MAC Fotografica | MAC FOTO | Spain | ||
| MRG | MANAG'AIR | MANAG'AIR | France | ||
| AQ | MPJ | MAP-Management and Planung | MAPJET | Austria | |
| TFG | MAS Airways | TRAFALGAR | United Kingdom | ||
| M7 | MAA | MasAir | MAS CARGA | Mexico | |
| MY | MWG | MASwings | MASWINGS | Malaysia | |
| IN | MAK | MAT Macedonian Airlines | MAKAVIO | Macedonia | Defunct |
| MCC | MCC Aviation | DISCOVERY | South Africa | ||
| MGA | MG Aviación | MAG AVACION | Spain | ||
| JLA | MIA Airlines | SALLINE | Romania | ||
| OM | MGL | MIAT Mongolian Airlines | MONGOL AIR | Mongolia | |
| MNC | MIT Airlines | MUNCIE | Canada | ||
| MKA | MK Airline | KRUGER-AIR | Ghana | ||
| MB | MNB | MNG Airlines | BLACK SEA | Turkey | |
| EBF | MSR Flug-Charter | SKYRUNNER | Germany | ||
| MCV | MTC Aviación | MTC AVIACION | Mexico | ||
| MAQ | Mac Aviation | MAC AVIATION | Spain | ||
| MCN | Mac Dan Aviation Corporation | MAC DAN | United States | ||
| MTD | MacKnight Airlines | Australia | |||
| CC | MCK | Macair Airlines | Australia | ||
| MCS | Macedonian Airlines | MACAIR | Greece | ||
| MDH | Madina Air | MADINA AIR | Libya | ||
| DM | DAN | Maersk Air | MAERSKAIR | Denmark | Defunct |
| VB | MSK | Maersk Air UK | BLUESTAR | United Kingdom | Defunct, later became Duo Airways |
| MJB | Magic Blue Airlines | MAGIC BLUE | Netherlands | ||
| MGR | Magna Air | MAGNA AIR | Austria | ||
| MLH | Mahalo Air | MAHALO | United States | ||
| W5 | IRM | Mahan Air | MAHAN AIR | Iran | |
| M2 | MZS | Mahfooz Aviation | MAHFOOZ | Gambia | |
| MAT | Maine Aviation | MAINE-AV | United States | ||
| MAJ | Majestic Airlines | MAGIC AIR | United States | ||
| AKM | Mak Air | MAKAIR | Kazakhstan | ||
| MLG | Malagasy Airlines | Madagascar | |||
| MLX | Malawi Express | MALAWI EXPRESS | Malawi | ||
| MKK | Malaya Aviatsia Dona | AEROKEY | Russia | ||
| MH | MAS | Malaysia Airlines | MALAYSIAN | Malaysia | |
| DB | MLT | Maleth-Aero | Malta | ||
| MAE | Mali Air | MALI AIREXPRESS | Austria | ||
| VXP | Mali Air Express | AVION EXPRESS | Mali | ||
| MTZ | Mali Airways | MALI AIRWAYS | Mali | ||
| MLC | Malila Airlift | MALILA | Democratic Republic of the Congo | ||
| MLS | Mall Airways | MALL-AIRWAYS | United States | ||
| LOD | Malmoe Air Taxi | LOGIC | Sweden | ||
| TF | SCW | Malmö Aviation | SCANWING | Sweden | |
| MAY | Malta Air | Malta | 2019 | ||
| R5 | MAC | Malta Air Charter | MALTA CHARTER | Malta | Defunct? |
| MWS | Malta Wings | MALTA WINGS | Malta | ||
| MA | MAH | Malév Hungarian Airlines | MALEV | Hungary | defunct |
| MLB | Manaf International Airways | MANAF | Burundi | ||
| RI | MDL | Mandala Airlines | MANDALA | Indonesia | |
| AE | MDA | Mandarin Airlines | MANDARIN | Taiwan | |
| JE | MNO | Mango | TULCA | South Africa | |
| MHN | Manhattan Air | MANHATTAN | United Kingdom | ||
| MTO | Marathon Airlines | MARATHON | Greece | ||
| MNR | Mann Air | TEEMOL | United Kingdom | ||
| MAN | Mannion Air Charter | MANNION | United States | ||
| MTS | Mantrust Asahi Airways | MANTRUST | Indonesia | ||
| MNX | Manx Airlines | MANX | United Kingdom | ||
| MAD | Maple Air Services | MAPLE AIR | Canada | ||
| MAR | March Helicopters | MARCH | United Kingdom | ||
| MCP | Marcopolo Airways | MARCOPOLO | Afghanistan | ||
| MGI | Marghi Air | MARGHI | Nigeria | ||
| MRK | Markair | MARKAIR | United States | ||
| MKO | Markoss Aviation | GOSHAWK | United Kingdom | ||
| 6V | MRW | Mars RK | AVIAMARS | Ukraine | |
| MCE | Marshall Aerospace | MARSHALL | United Kingdom | ||
| M7 | MSL | Marsland Aviation | MARSLANDAIR | Sudan | |
| XMA | Martin Aviation Services | United States | |||
| MBE | Martin-Baker | MARTIN | United Kingdom | ||
| MP | MPH | Martinair | MARTINAIR | Netherlands | |
| MRA | Martinaire | MARTEX | United States | ||
| MFA | Martyn Fiddler Associates | SEAHORSE | United Kingdom | ||
| MVN | Marvin Limited | MARVIN | United Kingdom | ||
| TRP | Maryland State Police | TROOPER | United States | ||
| MTH | Massachusetts Institute of Technology | RESEARCH | United States | ||
| MSY | Massey University School of Aviation | MASSEY | New Zealand | ||
| MSW | Master Airways | MASTER AIRWAYS | Serbia | ||
| MPL | Master Planner | United States | |||
| LMJ | Masterjet | MASTERJET | Portugal | ||
| Q4 | Mastertop Linhas Aéreas | Brazil | |||
| MIA | Mauria | MAURIA | Mauritania | ||
| MNV | Mauritanienne Aerienne Et Navale | NAVALE | Mauritania | ||
| MRF | Mauritanienne Air Fret | MAUR-FRET | Mauritania | ||
| MWY | Mauritanienne Airways | MAURITANIENNE | Mauritania | ||
| MDE | Mauritanienne De Transport Aerien | MAURI-TRANS | Mauritania | ||
| MVR | Maverick Airways | MAV-AIR | United States | ||
| H5 | MVL | Mavial Magadan Airlines | Mavial | Russia | |
| MAI | Max Avia | MAX AVIA | Kyrgyzstan | ||
| MSF | Max Sea Food | MAXESA | El Salvador | ||
| MAX | Max-Aviation | MAX AVIATION | Canada | ||
| 8M | MXL | Maxair | MAXAIR | Sweden | |
| MXU | Maximus Air Cargo | CARGO MAX | United Arab Emirates | ||
| MY | MXJ | Maxjet Airways | MAX-JET | United States | Defunct |
| MXS | Maxsus-Avia | MAXSUS-AVIA | Uzbekistan | ||
| MXP | May Air Xpress | BEECHNUT | United States | ||
| MW | MYD | Maya Island Air | MYLAND | Belize | |
| 7M | MYI | Mayair | MAYAIR | Mexico | |
| MBS | Mbach Air | MBACHI AIR | Malawi | Ground Services | |
| MCH | McAlpine Helicopters | MACLINE | United Kingdom | ||
| MKL | McCall Aviation | MCCALL | United States | ||
| DAC | McDonnell Douglas | DACO | United States | ||
| MDS | McNeely Charter Services | MID-SOUTH | United States | ||
| MEK | Med-Trans of Florida | MED-TRANS | United States | ||
| MDM | Medavia | MEDAVIA | Malta | ||
| MRZ | Medical Air Rescue Services | MARS | Zimbabwe | ||
| MCL | Medical Aviation Services | MEDIC | United Kingdom | ||
| MDF | Mediterranean Air Freight | MED-FREIGHT | Greece | ||
| MDY | Mediterranean Airways | Egypt | |||
| MEJ | Medjet International | MEDJET | United States | ||
| MGK | Mega | MEGLA | Kazakhstan | ||
| MEL | Mega Linhas Aéreas | MEGA AIR | Brazil | ||
| M8 | MKN | Mekong Airlines | MEKONG AIRLINES | Cambodia | Defunct |
| IM | MNJ | Menajet | MENAJET | Lebanon | |
| Mercer Airlines | United States | Defunct | |||
| MXX | Merchant Express Aviation | MERCHANT | Nigeria | ||
| MEC | Mercury Aircourier Service | MERCAIR | United States | ||
| POV | Meridian | AIR POLTAVA | Ukraine | ||
| MRD | Meridian Air Cargo | MERIDIAN | United States | ||
| MHL | Meridian Airlines | HASSIMAIR | Nigeria | ||
| DSL | Meridian Aviation | DIESEL | United Kingdom | ||
| MEM | Meridian Limited | MERIDIAN CHERRY | Ukraine | ||
| IG | ISS | Meridiana | MERIDIANA | Italy | Callsign was MERAIR |
| MEI | Merlin Airways | AVALON | United States | ||
| MZ | MNA | Merpati Nusantara Airlines | MERPATI | Indonesia | |
| YV | ASH | Mesa Airlines | AIR SHUTTLE | United States | |
| XJ | MES | Mesaba Airlines | MESABA | United States | |
| MSQ | Meta Linhas Aéreas | META | Brazil | ||
| MET | Meteorological Research Flight | METMAN | United Kingdom | METMAN1 callsign currently used by FAAM Airborne Laboratory, operated by Airtask Group | |
| MER | Methow Aviation | METHOW | United States | ||
| MVI | Metro Business Aviation | United Kingdom | |||
| MEX | Metro Express | EAGLE EXPRESS | United States | ||
| MTR | Metroflight | METRO | United States | ||
| MTJ | Metrojet | METROJET | Hong Kong | ||
| PIX | Metropix UK | METROPIX | United Kingdom | ||
| MPS | Metropolis | METRO REGIONAL | Netherlands | Metropolis Noord 1 | |
| MXB | Mex Blue | MEX BLUE | Mexico | ||
| MJT | Mex-Jet | MEJETS | Mexico | ||
| GJ | MXC | Mexicargo | MEXICARGO | Mexico | defunct |
| MXA | Mexicana de Aviación | MEXICANA | Mexico | ||
| MXT | México Transportes Aéreos | TRANSMEX | Mexico | ||
| HUR | Miami Air Charter | HURRICANE CHARTER | United States | ||
| LL | BSK | Miami Air International | BISCAYNE | United States | Previous IATA Code "GL" |
| OWL | Miami Valley Aviation | NIGHT OWL | United States | ||
| MPT | Miapet-Avia | MIAPET | Armenia | ||
| BIB | Michelin Air Services | France | |||
| WIZ | Micromatter Technology Solutions | WIZARD | United Kingdom | ||
| NYL | Mid Airlines | NILE | Sudan | ||
| MPA | Mid-Pacific Airlines | MID PAC | United States | ||
| MJR | Midamerica Jet | MAJOR | United States | ||
| ME | MEA | Middle East Airlines | CEDAR JET | Lebanon | |
| MID | Midland Airport Services | United Kingdom | |||
| MFR | Midline Air Freight | MIDLINE FREIGHT | United States | ||
| MIS | Midstate Airlines | MIDSTATE | United States | ||
| JI | MDW | Midway Airlines (1993–2003) | MIDWAY | United States | defunct |
| ML | MDW | Midway Airlines (1976–1991) | MIDWAY | United States | defunct |
| FLA | Midway Express | PALM | United States | ||
| FAX | Midwest Air Freighters | FAIRFAX | United States | ||
| YX | MEP | Midwest Airlines | MIDEX | United States | |
| MY | MWA | Midwest Airlines (Egypt) | Egypt | ||
| NIT | Midwest Aviation | NIGHTTRAIN | United States | ||
| MWT | Midwest Aviation Division | MIDWEST | United States | ||
| HTE | Midwest Helicopters De Mexico | HELICOPTERSMEXICO | Mexico | ||
| MJ | MLR | Mihin Lanka | MIHIN LANKA | Sri Lanka | |
| MAB | Millardair | MILLARDAIR | Canada | ||
| RJM | Millen Corporation | MILLEN | United Kingdom | ||
| MLK | Millennium Air | NIGERJET | Nigeria | ||
| DLK | Millennium Airlines | DEKKANLANKA | Sri Lanka | ||
| MFS | Miller Flying Services | MILLER TIME | United States | ||
| OXO | Million Air | MILL AIR | United States | ||
| MIM | Mimino | MIMINO | Russia | ||
| NAB | Mina Airline Company | Egypt | |||
| OMR | Minair | ORMINE | Central African Republic | ||
| EBE | Minebea Technologies | MINEBEA | United States | ||
| MAZ | Mines Air Services Zambia | MINES | Zambia | ||
| MNL | Miniliner | MINILINER | Italy | ||
| MNS | Ministic Air | MINISTIC | Canada | ||
| WDG | Ministry of Agriculture, Fisheries and Food | WATCHDOG | United Kingdom | ||
| LIR | Minsk Aircraft Overhaul Plant | LISLINE | Belarus | ||
| MIC | Mint Airways | MINT AIRWAYS | Spain | ||
| MIR | Miramichi Air Service | MIRAMICHI | Canada | ||
| MIF | Miras | MIRAS | Kazakhstan | ||
| MOS | Misr Overseas Airways | Egypt | |||
| MAF | Mission Aviation Fellowship | MISSI | Indonesia | ||
| MSN | Missionair | MISIONAIR | Spain | ||
| MRN | Missions Gouvernemtales Francaises | MARIANNE | France | ||
| BDG | Mississippi State University | BULLDOG | United States | ||
| XV | MVA | Mississippi Valley Airlines | VALAIR | United States | |
| M4 | MSA | Mistral Air | AIRMERCI | Italy | renamed Poste Air Cargo |
| MJF | MJET | EM-EXPRESS | Austria | ||
| MBO | Mobil Oil | MOBIL | Canada | ||
| MXE | Mocambique Expresso | MOZAMBIQUE EXPRESS | Mozambique | ||
| MFZ | Mofaz Air | MOFAZ AIR | Malaysia | ||
| MOW | Mohawk Airlines | MOHAWK AIR | United States | ||
| MW | MUL | Mokulele Airlines | MUKULELE | United States | Callsign and code changed from BUG/SPEEDBUGGY in 2013 |
| MLE | Moldaeroservice | MOLDAERO | Moldova | ||
| 2M | MDV | Moldavian Airlines | MOLDAVIAN | Moldova | |
| MVG | Moldova | MOLDOVA-STATE | Moldova | ||
| RRV | Mombasa Air Safari | SKYROVER | Kenya | ||
| ZB | MON | Monarch Airlines | MONARCH | United Kingdom | defunct October 2017 |
| MNH | Monarch Airlines | MONARCH AIR | United States | ||
| 8I | Myway Airlines | Italy | |||
| MFC | Moncton Flying Club | EAST WIND | Canada | ||
| MDB | Monde Air Charters | MONDEAIR CARGO | United Kingdom | ||
| MTI | Monerrey Air Taxi | MONTERREY AIR | Mexico | ||
| MKY | Monky Aerotaxis | MONKY | Mexico | ||
| YM | MGX | Montenegro Airlines | MONTENEGRO | Montenegro | former callsign was "MONTAIR" |
| 5M | MNT | Montserrat Airways | MONTSERRAT | Montserrat | |
| MNY | Mooney Aircraft Corporation | MOONEY FLIGHT | United States | ||
| MAL | Morningstar Air Express | MORNINGSTAR | Canada | ||
| MSS | Morris Air Service | WASATCH | United States | ||
| MRO | Morrison Flying Service | MORRISON | United States | ||
| 3R | GAI | Moskovia Airlines | GROMOV AIRLINE | Russia | JSC |
| MPI | Mosphil Aero | MOSPHIL | Philippines | ||
| M9 | MSI | Motor Sich Airlines | MOTOR SICH | Ukraine | |
| NM | NZM | Mount Cook Airline | MOUNTCOOK | New Zealand | |
| MTN | Mountain Air Cargo | MOUNTAIN | United States | ||
| N4 | MTC | Mountain Air Company | MOUNTAIN LEONE | Sierra Leone | |
| PKP | Mountain Air Express | PIKES PEAK | United States | ||
| BRR | Mountain Air Service | MOUNTAIN AIR | United States | ||
| MBI | Mountain Bird | MOUNTAIN BIRD | United States | ||
| MHA | Mountain High Aviation | MOUNTAIN HIGH | United States | ||
| MPC | Mountain Pacific Air | MOUNTAIN PACIFIC | Canada | ||
| MTV | Mountain Valley Air Service | MOUNTAIN VALLEY | United States | ||
| MDN | Mudan Airlines | Somali Republic | |||
| CMJ | Mudanjiang General Aviation | MUDANJIANG | China | ||
| MTX | Multi Taxi | MULTITAXI | Mexico | ||
| WBR | Multi-Aero | WEBER | United States | ||
| MFT | Multiflight | YORKAIR | |||
| MNZ | Murmansk Aircompany | MURMAN AIR | Russia | ||
| MUA | Murray Air | MURRAY AIR | United States | ||
| MMR | Musrata Air Transport | MUSRATA AIR | Libya | ||
| MAW | Mustique Airways | MUSTIQUE | Barbados | ||
| Z9 | MYM | MYAirline | MYAIR | Malaysia | defunct |
| MYW | MyWay Airlines | MYSKY | Georgia | ||
| VZ | MYT | MyTravel Airways | KESTREL | United Kingdom | Defunct, callsign now used by Thomas Cook Airlines |
| UB | UBA | Myanma Airways | UNIONAIR | Myanmar | |
| 8M | MMA | Myanmar Airways International | MYANMAR | Myanmar | |
| MAV | Minoan Air | MINOAN | Greece | ||
| MYA | Myflug | MYFLUG | Iceland | ||
| VKG | MyTravel Airways | VIKING | Denmark | defunct; callsign now used by Thomas Cook Airlines Scandinavia | |
| AAD | Mann Air Ltd | Ambassador | United Kingdom | t/a Ambassador | |
| M2 | MHV | MHS Aviation GmbH | SNOWCAP | Germany | |
| MTU | Middle Tennessee State University | BLUE RAIDER | United States | 2019[5] |
