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Airport Codes


Airport codes are unique identifiers assigned to airports worldwide, primarily in two forms: the three-letter IATA code used for passenger services like ticketing and baggage handling, and the four-letter ICAO code used for air traffic control and flight planning.

Types of Airport Codes

TypeFormatUsed byExample (London Heathrow)
IATA (International Air Transport Association)Three-letterAirlines, travel agents, public, baggage handlingLHR
ICAO (International Civil Aviation Organization)Four-letterPilots, air traffic control, airline operationsEGLL

Common IATA Codes

Many airport codes are formed from the first three letters of the city or airport name (e.g., ATL for Atlanta, BOS for Boston, DEN for Denver). However, there are many exceptions:

Airport NameIATA CodeCity / Location
Hartsfield–Jackson Atlanta International AirportATLAtlanta, Georgia, USA
Beijing Capital International AirportPEKBeijing, China
Dubai International AirportDXBDubai, United Arab Emirates
George Bush Intercontinental AirportIAHHouston, Texas, USA
John F. Kennedy International AirportJFKNew York, USA
Los Angeles International AirportLAXLos Angeles, California, USA
Orlando International AirportMCOOrlando, Florida, USA
Charles de Gaulle AirporCDGParis, France
San Francisco International AirportSFOSan Francisco, California, USA
Seattle-Tacoma International AirportSEASeattle, Washington, USA
Tokyo Haneda AirportHNDTokyo, Japan