On some flights (especially on HF aero frequencies) I have heard some companies using their three letter ICAO designator followed by a flight number. For instance, I heard a KNE #### flight that crossed to the Saudi airline NAS instead of their normal NAS Express voice call sign. I have also seen these three letter/flight number style IDs on my Mode-S system, so be sure to watch for these three letter/flight number IDs as this may help you ID the owner of the aircraft you are monitoring.
Any listing below without a country attached will be a company flagged in the United States.
Entries marked with an * to indicate those airlines that I have heard using their three letter ICAO ID instead of their voice call sign on air during monitoring sessions.
Last Update: 1 February 2016
Air Cargo
Abex ABX Air Inc ABX
Airbridge Cargo Airbridge Cargo Airlines Ltd (Russian Federation) ABW*
Cargolux Cargolux Airlines Intl (Luxembourg) CLX
Cargolux Italia Cargolux Italia S.P.A. (Italy) ICV
FedEx Federal Express FDX
LAN Cargo LAN Cargo S.A. (Chile) LCO
Lufthansa Cargo Lufthansa Cargo AG (Germany) GEC
Lynden Lynden Air Cargo LLC LYC
Polar Polar Air Cargo Worldwide PAC*
Shanghai Cargo Shanghai Airlines Cargo Intl Company (China) SHQ
Sing Cargo Singapore Airlines Cargo PTE Ltd (Singapore) SQC
Support Prescott Support Air Cargo Services PSK
UPS United Parcel Service UPS
Air Carriers/Charters
Acey Atlantic Southeast Arlines dba Express Jet ASQ
Aeroflot Aeroflot - Russian Airlines (Russian Federation) AFL*
Aero Lane Aerolane Líneas Aéreas Nacionales del Ecuador S.A. (LAN Ecuador) LNE
Aero Mexico Aerovias de Mexico S.A. de C.V. (Mexico) AMX
Aerosvit Aerosvit Airlines (Ukraine) AEW*
Afriqiyah African Airlines Corporation (Libya) AAW
Air Algerie Air Algerie (Algeria) DAH
Air Azores Sata Internacional (Portugal) RZO
Air Berlin Air Berlin PLC Co. Luftverkehrs KG (Germany) BER
Air Cairo Air Cairo (Budget airline of Egypt Air( (Egypt) MSC
Air Canada Air Canada (Canada) ACA
Air China Air China (China) CCA
Air Europa Air Europa (Spain) AEA* (Also Europa)
Air France Air France (France) AFR
Air Hong Kong Air Hong Kong Ltd (Hong Kong) AHK
Air India Air India Ltd (India) AIC*
Air Italy Air Italy S.P.A. (Italy) AEY*
Air Japan Air Japan Company Ltd (Japan) AJX
Air Madagascar Air Madagascar Societe Nationale Malagache de Transports Aeriens (Madagascar) MDG
Air Mauritius Air Mauritius Ltd (Mauritius) Also uses just Mauritius MAU
Air New Zealand (See New Zealand ANZ)
Air Portugal Transportes Aeros Portugueses E.P. (Portugal) TAP*
Air Shuttle Mesa Aviation Services ASH
Air Transat Air Transat A.T. Inc (Canada) TSC
Air Transport Air Transport International ATN
Air Van Air Vanuatu (Vanuatu) AVN
Air Wisconsin Air Wisconsin Airlines/United Express AWI
Air Zimbabwe Air Zimbabwe (Zimbabwe) AZW
Airmil Aeronave Militar Espanola. Ministerio De Defensa (Spain) AME
Airtraf Transair France (France) TSA*
Alaska Alaska Airlines Inc ASA
Alliegant Allegiant Air Inc AAY
All Nippon All Nippon Airways Co LTD (Japan) ANA
American American Airlines Inc AAL*
Alitalia Alitalia - Compagnia Aerea Italiana S.P.A. (Italy) AZA
Angkasa Royal Malaysian Air Force (Malaysia) (Military) RMK
Ank Air All Nippon Co Ltd (ANA) (Japan) ANK
Antonov Bureau Antonov Design Bureau ADB*
Arabia Air Arabia (United Arab Emirates) ABY
Arik Air Arik Air Ltd (Nigeria) ARA
Arkefly TUI Airlines Nederland (Netherlands) TFL
Aruba Aruba Airlines (Aruba) ARU
Ascot RAF-HQSTC (Air Transport) (United Kingdom) RRR*
Asiana Asiana Airlines (Republic of Korea) AAR
Asian Express Air Asia BHD (Malaysia) Often call just as 'Express' AXM
Atlanta Air Atlanta Icelandic (Iceland) ABD
Aussie Royal Australian Air Force (Australia) ASY
Austrian Austrian Airlines (AUA) AG (Austria) AUA
Avavia Avient Aviation (Zimbabwe) SMJ*
Avianca Aerovias Del Continente Americano S.A. (Colombia) AVA
Bambi Allied Air Limited (Nigeria) AJK*
Bartok Heavy Lift Wing (Hungary) BRK
Beauty JetAirFly.com (Belgium) JAF
Beeline Brussels Airlines (Belgium) BEL
Beibars Beibars CJSC (Kazakhstan) BBS*
Belgian Air Force Belgian Air Force (Belgium) BAF*
Biscayne Miami Air International BSK
Blue Bird Virgin Australia Airlines (NZ) Ltd (New Zealand) PBN
Blue Panorama Blue Panorama S{A (Italy) PBA
Blue Streak PSA Airlines JLA
Boeing Boeing Commercial Airplane Group (Seattle, WA) BOE
Brickyard Republic Airlines Inc RPA
Brunei Royal Brunei Airlines (Brunei Darussalam) RBA
Cabo Verde Transportes Aeros de Cabo Verde - TACV (Cape Verde) TCV
Cactus U.S. Airways AWE
Canforce Canadian Armed Forces (Canada) CFC*
Caribjet Caribbean Airways (Barbadoes) IQQ
Caribbean Airlines Caribbean Airlines Ltd (Trinidad and Tobago) BWA
Cathay Cathay Pacific Airways Ltd (China) CPA
Cayman Cayman Airways Ltd (UK) CAY
Cebu Cebu Pacific Air (Philippines) CEB
Channex Air Carrier Jet2 Com Ltd (United Kingdom) EXS
Chatham Air Transport (Chatham Islands) Ltd (New Zealand) CVA
China Eastern China Eastern (China) CES
China Southern China Southern Airlines (China) CSN
Chinook Sunwest Aviation Ltd (Canada) CNK
Citrus Airtran Airways Inc TRS
Colombian Air Force Fuerza Aerea Colombiana (Columbia) FAC
Condor Condor Flugdienst GMBH Kelsterbach (SITZ) (Germany) CFG
Connie Kalitta Air LLC CKS
Continental Continental Air Lines Inc COA
Copa Copa Airlines Compañía Panameña de Aviación, S.A (Panama) CMP
Corsair Corse Air International (France) CRL
COTAM Commandement du Transport Aerien Militaire Francais (France) CTM
Cowan Cowen Group COWAN
CSA-Lines Czech Airlines (Czech Republic) CSA
Cubana Cubana de Aviacion S.A. (Cuba) CUB
Czech Air Force Czech Air Force (Czech Republic) CEF*
Danish Air Force Danish Air Force (Denmark) DAF*
Delta Delta Airlines DAL
Dragon Air Hong Kong Dragon Airlines (China) HDA
Dubai Dubai Air Wing (Dubai) DUB
Dynasty China Airlines (China) CAL
Eagle AMR American Eagle Inc EGF
Egyptair Egypt Air (Egypt) MSR
El Al El Al - Israeli Airlines Ltd (Israel) EKY*
Emirates Emirates (United Arab Emirates) UAE*
Ethiopian Ethiopian Airlines Corp (Ethiopia) ETN
Etihad Ethad Airways (United Arab Emirates) ETH
Europa Air Europa (Spain) AEA*
Eva EVA Airways Corp (China) EVA
Evergreen Evergreen International Airlines EIA
Express India Air India Express (India) AXB
Finnair Finnair OYJ (Finland) FIN
First Air First Air Ltd (Canada) FAB
Flagship Express Airlines dba Delta Connection FLG
Fraction Netjets, Transportes Aereos S.A. (Portugal) NJE
France Air Force Force Aerienne Francaise (France) FAF*
French Navy France Marine Nationale (France) FNY*
German Air Force German Air Force (Germany) GAF*
Gazprom Gazpromavia (Russian Federation) GZP*
Giant Atlas Air GTI
Go Cat Tiger Airways (Singapore) TGW
Greenheart Fly Jamaica Airways Ltd (Jamaica) FJM
Greenland Air Greenland A/S (Denmark) GVL
Gulf Air Gulf Air (Bahrain) GFA
Hawaii/Hawaiian Hawaiian Airlines HAL
Hong Kong Shuttle Hong Kong Express Airways Ltd (China) HKE
Hurricane Charter Miami Air (charter) HUR
Iberia Iberia (Spain) IBE
Iber World Iberworld Airlines S.A. (Spain) IWD
Ice Air Icelandair (Iceland) ICE
IFly Interglobe Aviation Private Ltd (T/A Indigo) (India) IGO
Indonesia Garuda Indonesia (Indonesia) GIA
Interjet ABC Aerolíneas, S.A. de C.V. (Mexico) AIJ
Jamaica Air Jamaica (Jamaica) AJM
Japan Air Japan Airlines Co Ltd (Japan) JAL
Jazz Air Canada Regional (Canada) JZA
Jet Airways Jet Airways M/S (India) PVT Ltd (India) JAI
Jet Blue Jet Blue Airways JBU
Jetflite Jetflite OY Finland (Finland) JEF
Jet Speed Executive Jet Management, Inc EJM
Jetstar Jetstar Airways Pty Ltd (Australia) JST
Jet Star Asia Jetstar Asia Airays Pty Ltd (Singapore) JSA (Both Jetstar Asia and Jetstar Australia have been heard using the same call sign in the SEA MWARA)
Jordanian Royal Jordanian (Jordan) RJA
Kenya Kenya Airways Ltd (Kenya) KQA
Kestrel Thomas Cook Airlines Ltd (UK) TCX
KLM KLM Royal Dutch Airlines (Netherlands) KLM
Korean Air Korean Air Lines Co (Republic of Korea) KAL
Kuwaiti Kuwait Airways Copr (Kuwait) KAC
LACSA Lineas Aereas Costaarricenses, S.A. (LACSA) (Costa Rica) LRC
Lan Chile Linea Aerea Nacional de Chile (LAN) (Chile) LAN
Lan Peru Lan Peru S.A. (Peru) LPE
Libya Air Libya Airways (Libya) LYW
Lindbergh GoJet Airlines Inc GJS
Lion Lion Mentari Airlines PT (Indonesia) LNI
Livingston Livingston S.P.A. (Italy) LVG
Logistics Jet Logistics Inc JLG*
Lufthansa Deutsche Lufthansa A.G. (Germany) DLH
Malaysian Malaysian Airlines System Berhad (Malaysia) MAS
Mandarin Madarin Airlines (China) MDA
Martin Air Martinair Holland N.V. (Netherlands) MPH
Mega Royal Malaysian Air Force (Malaysia) (Military) RMK
Merair Meridiana Fly S.P.A. (Italy) ISS*
Meridian Cherry Meridian Ltd (Ukraine) MEM*
Mercury Shuttle America Corp ICF
Mexicana Compania Mexicana de Aviacion S.A. (Mexico) MXA
Mistral Open Skies (France) NOS
Monarch Monarch Airlines Ltd (UK) MON
Namibia Air Namibia PTY Ltd (Namibia) NMB (Also have heard Namib)
NAS Express National Air Services (NAS) (Saudi Arabia) KNE*
New Zealand Air New Zealand Ltd (New Zealand) ANZ (Have also heard them use Air New Zealand on the air)
Niugini Air Niugini (Papua New Guinea) ANG
Nordic Norweigan Air Shuttle (Sweden) NDC
Norland NorlandAir (Iceland) FNA
Nor Shuttle Norwegian Air Shuttle (Norway) NAX
North American North American Airlines NAO
Oman Air Oman Air (Oman) OMA
Omni Express Omni Air International OAR
Pakistan Pakistan International Airlines (Pakistan) PIA
Panther Aviation Services CSI
Philippines Philippine Air Lines Inc (Philippines) PAL
Polish Air Force Polish Air Force (Poland) PLF*
Pollot LOT - Polskie Linie Lotnicze (Poland) LOT*
Qantas Qantas Aieways Ltd (Australia) QFA
Qartari Qatar Airways Company (Qatar) QTR
Quality TNT Airways S.A. (Belgium) TAY
Red Angel FAI Rent-A-Jet AG, Nuernberg (Germany) IFA
Redwood Virgin America VRD
Rock Band Journey Aviation JNY
Rotana Rotana Jet Aviation (United Arab Emirantes) RJD
Royal Air Maroc RAM Royal Air Maroc - Compagnie Nationale De Transorts Aeriens (Morocco) RAM (Have also seen just Royal Maroc being used for this airline)
Ruby Vision Airlines Inc dba Vision Air RBY
Ryan Intl Ryan International Airlines RYN
Saudi Saudi Arabian Airlines (Saudi Arabia) SVA
Scandinavian Scandinavian Airlines System (Sweden) SAS
Shamrock Aer Lingus (Ireland) EIN
Shanghai Shanghai Airlines (China) CSH
Sharink Shat Ink Ltd (Russian Federation) UGP*
Shenzhen Air Shenzhen Airlines (China) CSZ
Sierra Pacific Sierra Pacific Airlines (North Hollywood, CA) SPA
SkyWest Sky West Aviation Inc SLW
Silk Air Silkair (Singapore) PTE Ltd (Singapore) SLK
Singapore Singapore Airlines Ltd (Singapore) SIA
Singcargo Singapore Airlines Cargo Pte Ltd (Singapore) SQC
Sky Travel Travel Servis (Czech Republic) YVS*
Snowball American Airlines (Special call sign) SNOBL
Songbird Sky King Inc SGB*
Southern Air Southern Air Inc SOO
Southwest Southwest Airlines Company Inc SWA
Speedbird British Airways (UK) BAW
Spirit Wings Spirit Airlines NKS
Springbok South African Airways SAA
Sri Lankan Sri Lankan Airlines (Sri Lanka) ALK
Sun Country MN Airlines, LLC, dba Sun Country Airlines SCX
Sunwing Sunwing Airlines (Canada) SWG
Swiss Swiss International Air (Switzerland) SWR
Taca TACA International Airlines S.A. (El Salvador) TAI
TAG Espana TAG Aviation Espana (Spain) TGM*
TAM TAM - Linhas Aereas S.A. (Brazil) TAM
Thai Thai Airways International (Thailand) THA
Tomson Thomson Airways LTD (UK) TOM
Transmile Transmile Air Services (M) SDN BHD (Malaysia) TSA
Transoviet Transaero Airlines (Russian Federation) TSO*
Tunis Air Tunis Air - Societe Tunisienna de L'Air (Tunisia) TAR*
Turkish Turk Hava Yollari (Turkish Airlines Co) (Turkey) THY*
Turkish Air Force Turkish Air Force (Turkey) HVK
Twin Star DC Aviation GMBH Stuttgart (Germany) DCS*
United United Air Lines Inc UAL
United Nations United Nations Organization UNO
Uzbek Uzbekistan Havo Jullary (Uzbekistan Airways) (Uzbekistan) UZB
Vampire Execujet Europe A/S (Denmark) VMP
Velocity Virgin Australia (Australia) VOZ
Vietnam Hang Khong Viet Nam (Vietnam) HVN
Virgin Virgin Atlantic (UK) VIR
Volga Volga-Dnepr (Russian Federation) VDA*
Wafeer Al Wafeer Air (Saudi Arabia) WFR*
Wagon Air Indonesia Air Asia PT (Indonesia) AWQ
WestJet Westjet Airlines Ltd (Canada) WJA
Wild Goose Freshaer (UK) FAE*
Wisconsin Air Wisconsin Airlines AWI
World World Airways WOA
Worldwide Worldwide Jet Charter WWI*
Yangtze River Yangtze River Express Airlines Co., Ltd (China) YZR
Yemini Yemen Airways (Yemen) IYEXanadu Air Asia X SDN BHD (Malaysia) XAX
Xiamen Air Xiamen Airlines (China) CXA
ZitoTrans Aviacon Zitotrans (Russian Federation) AZS*
