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- A4 - Southern Winds - Argentina - Buenos Aires to points in Argentina, and Madrid to points in Spain and Europe
- A6 - Asia Pacific Airlines - Guam - Cargo B727 in the Pacific southwest
- AA - American Airlines - USA - Major carrier
- AB - Air Berlin - Germany - Flights to Palma de Mallorca and other European destinations
- AC - Air Canada - The nation's largest airline.
- AE - Mandarin Airlines - Taiwan - Flights to Sydney, Brisbane, Auckland and Vancouver. Non-English website
- AF - Air France - English site for the USA
- AG - Provincial Airlines - Canada - Newfoundland and eastern Canada on Pipers and Fairchilds
- AH - Air Algerie - Algeria - Flights from Frankfurt and Berlin
- AI - Air India - The national carrier
- AK - AirAsia - Malaysia - 737s out of Subang
- AM - Aeromexico - One of Mexico's major internationals
- AM - Island Airlines - USA - Scheduled service between Nantucket and Hyannis
- AN - Ansett Australia - Died March 4, 2002
- AN - Skywest - Australia - Extensive domestic routes in western Australia. Based in Perth
- AP - Air One - Italy - Lufthansa's Italian partner
- AQ - Aloha Airlines - USA - The Hawaiian Islands
- AR - Aerolíneas Argentinas - Argentina
- AS - Alaska Airlines/Horizon Air - USA - The Western United States and Canada
- AS - Horizon Air/Alaska Airlines - USA - The northwest, out of SEA-TAC and Portland
- AT - Royal Air Maroc - Morocco - 747s from Montreal and JFK to Casablanca
- AU - Austral Líneas Aéreas - Argentina - Twenty-four dometic destinations
- AWC - Titan Airways - UK - Corporate charters based at Stansted
- AWS - Royal Wings - Jordan - Scheduled flights from Amman to Haifa, Tel Aviv, Gaza and Aqaba, plus charters
- AY - Finnair - Finland - Flying out of Helsinki for more than 75 years
- AY - Finnair - Finland - Official homepage for the Americas
- AZ - Alitalia - Italy - Flag carrier flies to 57 countries
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- B - airBaltic - Latvia - The national airline and SAS partner
- B2 - Belavia Belarusian Airlines - Scheduled and charter flights to Europe and Asia
- B3 - Bellview Airlines - Nigeria - Domestic routes on DC-9s plus Nairobi, Bombay and Amsterdam on an A300
- B4 - Bhoja Air - Pakistan - Passenger and cargo service
- B6 - JetBlue - USA - Low-fare flights on A320s
- BA - British Airways - UK - "The World's Favourite Airline"
- BA - GB Airways - Gibraltar - British Airways franchise flies B737s to Manchester and London Gatwick
- BC - Air Jet - France - Commuter service between Paris and London
- BD - British Midland - UK - Heathrow's second-largest operator
- BG - Biman Air - Bangladesh - Asian and European capitals on DC-10s, A310s, F28s and BAe-ATPs
- BHA - Buddha Air - Nepal - Domestic flights from Kathmandu using four Beech 1900D aircraft
- BI - Royal Brunei Airlines - Brunei - Southeast Asia, Australia, the Persian Gulf and the UK, from headquarters in Bandar Seri Begawan
- BL - Pacific Airlines - Vietnam - Domestic flights, plus Taipei and Hong Kong
- BO - Bouraq Airlines - Indonesia - Domestic airline centered in Jakarta
- BQ - Aeromar - Mexico - Short hops using ATR-42s
- BR - EVA Air - Taiwan - The airline arm of the Evergreen Group
- BT - Air Baltic - Latvia - Flag carrier flies to Eastern European capitals. An SAS partner
- BT - Air Liberte Guadeloupe - A British Airways subsidiary
- BTL - Baltia Air Lines - USA - JFK to St. Petersburg, Russia
- BU - Braathens - Norway - The country's largest. Also serves Sweden
- BU - Sun Air - South Africa - Flights between Johannesburg, Cape Town and Durban
- BW - BWIA British West Indian - Trinidad & Tobago - L1011s and MD-83s
- BX - Coast Air - Norway - Primarily operates flights between Haugesund and Bergen
- BY - Britannia Airways - UK - Holiday destinations from Germany and the UK
- BZ - Keystone Air Service - Canada - Pipers and Beechcraft provide scheduled service connecting Swan River, Dauphin and Winnipeg, Manitoba
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- C6 - CanJet - Canada - 737-200s on domestic flights in eastern Canada
- C8 - Chicago Express Airlines - USA - An American Trans Air connector.
- CA - Air China - The largest operator within the People's Republic
- CB - Scot Airways - Scotland - Used to be Suckling Airways
- CC - Air Atlanta Icelandic - A privately-owned contract carrier
- CC - Macair Airlines - Australia - Saabs, Fairchilds and Otters in Queensland
- CD - Mindanao Express Airlines - Philippines - Connects Mindanao with the rest of the Philippines
- CE - Nationwide Airlines - South Africa - B727s, B737s and B767s on domestic flights plus London Gatwick
- CG - MBA Milne Bay Airlines - Papua New Guinea - More than 400 scheduled and charter domestic flights per week
- CI - China Airlines - World destinations fanning out from Taipei
- CJ - China Northern Airlines - Extensive domestic system using A300, MD-90 and MD-82 aircraft
- CJ - Colgan Air - USA - Continental Connctions on the eastern seaboard
- CL - Lufthansa CityLine - Germany - Five hundred flights a day to 61 European cities. CRJs and Avros
- CM - COPA - Panama - Fifteen 737s out of Panama City's Tocumen International Airport
- CN - Tropic Air - Belize - Eight domestic flights, plus Flores (Tikal), Guatemala
- CO - Continental Airlines - USA - Major carrier
- CU- Cubana - Cuba - Domestic flights, plus Europe, South America and Canada
- CV - Cargolux - Luxembourg - Seven 747-400Fs fly cargo to every continent except Australia
- CX - Cathay Pacific - Hong Kong - 747s, 777s, A330s and A340s
- CY - Cyprus Airways
- CZ - China Southern Airlines - Boeings serving China and southeast Asia
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- D3 - Daallo Airlines - Djibouti/Somalia - AN-24s, IL-18s and TU-154s
- DA - Air Georgia - Georgia - Flies between Tblisi and Frankfurt
- DB - Brit Air - France - A regional arm of Air France
- DD - Nok Air - Thailand - Low-cost airline with service from Bangkok to Chiang Mai, Hat Yai and Udon Thani
- DE - Condor - Germany - North American site for this German holiday service
- DL - Delta - USA - Major carrier
- DL - Delta Express - USA - The eastern states to Florida
- DL - Song - USA - Delta's low cost carrier
- DM - Maersk Air - Denmark - From Copenhagen and Brillund to major European cities
- DP - Air 2000 - UK - Scheduled and chartered holiday flights
- DP - First Choice - UK - Holiday flights to Southern Europe, Northern Africa and the Caribbean
- DS - Air Senegal - Senegal - Member of the Groupe Royal Air Maroc. Three B737s and a Dash 8
- DU - Hemus Air - Bulgaria - From Sofia to Europe, Africa and the Near East
- DV - Nantucket Airlines - USA - Back and forth between Hyannis and Nantucket every hour
- DW - Rottnest Air Taxi - Australia - Connects Rottnest Island with Freemantle
- DWT - Darwin Airline - Switzerland - SAAB 2000s between Lugano, Geneva, Barcelona and Olbia
- DX - DanAir - UK - An unofficial, commemorative site. Taken over by BA in '93
- DZ - Transcaraibes Air International/Air Tropical - Guadeloupe - Island hopping in the French West Indies
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- E5 - Samara Airlines - Russia - Domestic flights on Tupolevs, Ilushyns, Yakolevs and Antonovs
- E8 - AlpiEagles - Italy - Domestic and international
- ED - CCAir (US Airways Express) - USA - Charlotte, NC to 25 cities in 8 states
- EI - Aer Lingus - Ireland's national airline
- EJ - New England Airlines - USA - From Westerly, RI to Block Island twelve times a day and more
- EK - Emirates - UAE - Based in Dubai, the flag carrier uses airbuses and 777s
- EM - Western Airlines - Australia - Flies from Perth to Geraldton, Kalbarri, Denham and Monkey Mia
- EN - Air Dolomiti - Italy -Flights to Switzerland, Germany and Spain on ATRs and CRJs. A Lufthansa partner
- EP - Europe Airpost - France - Formerly Aéropostale
- EQ - TAME - Ecuador
- ET - Ethiopian Airlines - Domestic flights, plus Europe, Africa, Middle East and Asia
- EW - Eurowings - Germany - Regional flights throughout Europe
- EZ - Sun Air - Denmark - Jetstreams between Sweden, Norway, Ireland and Germany
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- F3 - Flying Enterpise - Sweden - Stockholm, Skövde, Jönköping and Visby
- F4 - Eureca - Italy - Domestic flights in northern Italy on Fokkers and a Fairchild Metroliner
- FA - Safair - South Africa - Passenger and cargo flights with 727s, MD80s and Hercules L382Gs
- FB - Fine Air - USA - Cargo flights to South and Central America and Caribbean
- FF - Tower Air - USA - Select US and European destinations from their terminal at JFK
- FG - Ariana Afghan Airlines - Afghanistan - The Middle East plus Moscow, Frankfurt and Istanbul
- FI - Icelandair - Iceland - Europe and North America from Keflavik
- FJ - Air Pacific - Fiji - One B747, one B767 and three B737s with an average age of seven years
- FL - AirTran Airways - USA - Atlanta to the mid- and eastern US on B717s
- FL - Frontier Airlines - USA - Domestic flights centered in Denver
- FM - Shanghai Airlines - China - Boeing 737s, 757s, and 767s to major Asian and European destinations
- FO - Expedition Airways - Zimbabwe - Seven Zimbabwe destinations, plus South Africa and Mozambique using a Beechcraft 1900C
- FP - Par Avion Airlines - Australia - Operates in Tasmania
- FQ - Air Aruba - To Aruba from Columbia, the US and Sao Paulo
- FQ - Thomas Cook Airlines - Belgium - From Belgium to European holiday spots
- FR - Ryanair - Ireland - Budget flights from Dublin to Europe on twenty-two 737s
- FS - Staf Cargo Airlines - USA - DC-10 and 747 freighters from Miami to South America
- FT - Vancouver Island Air - Canada - Beech seaplanes and deHavilland Beavers from Campbell River, BC
- FU - Air Littoral - France - CRJs and ATR 42-500s out of Montpellier and Nice
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- G1 - Gorkha Airlines - Nepal - Eight domestic destinations
- G3 - Emerald Airways - UK - Cargo flights in BAe 748 and Shorts SD360 out of Liverpool's John Lennon
- G4 - Allegiant Air - USA - Domestic DC-9 service
- G5 - Island Air - Cayman Islands - Scheduled service to Cayman Brac and Little Cayman, plus charters and sightseeing tours
- G7 - Gandalf Airlines - Italy - From Milan to major European capitals in Fairchild-Dornier 328s
- G9 - Air Arabia - UAE - Based in Sharjah, with flights throughout the Middle East on A320s
- GA - Citilink - Indonesia - Garuda Indonesia's low-cost domestic service. B737s.
- GA - Garuda Indonesia - Indonesia - Extensive domestic and international network
- GF - Gulf Air - Has four owner states: Bahrain, Oman, Qatar and UAE
- GH - Ghana Airways - Flights to and from West Africa and Accra
- GL - Air Greenland - Domestic flights, plus Denmark
- GM - Air Slovakia - Slovakia - B737s from Slovensko to the Mediterranean
- GQ - BigSky Airlines - USA - Short hops west of the Mississippi
- GS - AirFoyle - UK - Cargo and scheduled passenger service
- GT - Air Mandalay - Myanmar - Domestic airline
- GU - Riga Airlines - Latvia - London, Moscow and Paris to Riga
- GX - Air Ontario - Canada - Regional airline for the Great Lakes and north eastern US. Folded into parent company Air Canada's regional line: Jazz
- GY - Guyana Airways
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- H2 - City Bird - Belgium - Brussels to the US, Mexico and Europe
- HA - Hawaiian Airlines - USA - All Hawaiian islands and west coast USA
- HF - Hapag-Lloyd - Germany - Extensive network of European holiday destinations using A310s and B737s
- HH - Islandsflug - Iceland - Domestic flights on B737s, ATR-42s, Dornier 228s and a Piper Chieftan
- HK - Yangon Airways - Myanmar - Regional airline
- HM - Air Seychelles - Seychelles - From European and African capitals to the Indian Ocean paradise
- HP - America West Airlines - USA - Hubbed in Arizona
- HQ - HMY Airways - Canada - B757s between Vancouver and Toronto
- HR - Hahn Air - Germany - Charters on Fairchilds and SAABs
- HSA - East African Safari Air - Kenya - France and Italy to Nairobi, plus charters
- HV - Transavia - Netherlands - Amsterdam to Eurpoean holiday spots
- HY - Uzbekistan Airways - From Tashkent to Asia and Europe
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- IB - Iberia - Spain - The flag carrier
- IC - Indian Airlines - India - Wholly owned by the Government of India
- IE - Solomon Airlines - Solomon Islands - To Australia and neighbouring islands on B737s, three Islanders, and two Twin Otters
- IG - Meridiana - Italy - Low-cost carrier to domestic points plus Madrid, Barcelona and Amsterdam
- IM - Spirit Airlines - USA - Flights between Florida and the northeast
- IR - Iran Air - Tehran to Europe and Asia, plus domestic flights
- IV - WindJet - Italy - Low-cost flights throughtout Italy and to select European cities
- IY - Yemenia Airways - Yemen - From Sana'a to 25 cities in Europe, the Middle East and Africa
- IY - Yemenia Airways - Yemen - Unofficial North-American site
- IZ - Arkia Israeli Airlines - Vacation charters within Israel
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- J4 - Buffalo Airways - Canada - Charter work on a variety of aircraft. Based in Yellowknife, NWT
- JA - Air Bosna - Bosnia and Herzegovina - One ATR-42, two YAK-42s and a Cessna 550 to Eastern Europe and Scandanavia
- JB - Helijet Airways - Canada - Scheduled helicopters: Vancouver, Victoria and Seattle
- JD - Japan Air System - Ninety-nine domestic rutes
- JE - Manx Airlines - UK - From the Isle of Man to Ireland, Scotland and England
- JF - L.A.B. Flying Service - USA - Daily scheduled flights connecting Haines, Alaska with Juneau, Skagway and other S.E. Alaska communities
- JL - Japan Airlines - Tokyo and Osaka to all major world destinations
- JM - Air Jamaica - Montego Bay to the US and the Caribbean
- JP - Adria Airways - Slovenia
- JU - JAT Yugoslav Airlines - Unofficial site, but good enough to warrant an exception
- JV - Bearskin Airlines - Canada - Serving Northern Ontario
- JX - SunJet - USA - Twenty daily flights between New York and Florida
- JY - British European Airways - UK - Domestic flights, including Jersey and Guernsey
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- K5 - Wings of Alaska - USA - Cessnas, Beavers and Otters out of Juneau
- KA - Dragon Air - Hong Kong - Southeast Asia regional airline
- KB - Druk Air (Royal Bhutan Airlines) - Bhutan - India, Nepal, Bhutan, Thailand
- KD - Kendell Airlines - Australia
- KE - Korean Air - Southeast Asia plus select European and North Amercan cities
- KF - Air Botnia - Finland - now Blue1, a subsidiary of SAS. Third largest regional airline in Europe
- KF - Blue1 - Finland - formerly Air Botnia, a subsidiary of SAS. Third largest regional airline in Europe
- KK - TAM - Brazil - An A319, A330s, Fokkers and Caravans
- KL - KLM Royal Dutch Airlines - Netherlands - Schiphol to major world destinations
- KM - Air Malta - To Europe and the Middle East
- KQ - Kenya Airways - Nairobi to the rest of Africa and select world destinations
- KS - Penair (Peninsula Airways) - USA - Thirty-five small aircraft to 73 communites. An Alaska Airlines partner
- KU - Kuwait Airways - Forty destinations
- KX - Cayman Airways - Cayman Islands to Florida, Texas and Jamaica
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- L2 - Lynden Air Cargo - USA - Hercs hauling oversize loads in Alaska
- LA - LanChile Airlines - South, Central and North America, some Australia, some Europe
- LB - Albanian Airlines - Albania - three aircraft serving destinations in Italy, Turkey, Germany, Switzerland and Kosovo together with a growing charter programme
- LB - Lloyd Aero Boliviano - Bolivia
- LC - Loganair - UK - Serving Scotland for British Airways
- LG - Luxair - Luxembourg - 737s, Embraers and Fokkers to the rest of Europe, North Africa and New York
- LH - Lufthansa - Germany's biggest and most famous
- LH - Lufthansa Cargo - Germany - The flag carrier's freight division
- LI - LIAT - Antigua - Two hundred flights a day in the eastern Caribbean
- LM - Air ALM (Antillean Airlines) - Venezuela to the Caribbean and southeast United States
- LN - Libyan Arab Airlines - Libya
- LO - LOT Polish Airlines - Dates back to the 1920s
- LP - LanPreu - Peru - Peruvian arm of an extensive worldwide airline
- LT - LTU International Airways - Germany - Holiday destinations in Florida, California and the Caribbean
- LW - Pacific Wings Hawaii - USA - Island hopping in hawaii with Cessna 402Cs
- LX - Swiss International Airlines - Switzerland - Worldwide destinations. Was Crossair
- LY - El Al - Israel - Flag carrier flies from Tel Aviv to the world
- LZ - Balkan Bulgarian Airlines - Bulgarian flag carrier uses Tupolevs, Antonovs and 737s
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- M2 - Southeast Air Freight - Bahamas - Daily scheduled freight service between Nassau and Freeport
- M3 - European Air Express - Germany - Business commuter flights out of Cologne/Bonn
- M3 - WestJet - Canada - Twelve 737s serve 11 cities in western Canada
- M4 -
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