Hartsfield Jackson Atlanta International Airport

Hartsfield Jackson Atlanta International Airport carries the IATA code ATL — the three letters printed on boarding passes and baggage tags — and the ICAO code KATL, used in flight plans and by air traffic control. It serves Atlanta, United States.

IATA codes are assigned by the International Air Transport Association for passenger-facing use; the four-letter ICAO code encodes region and country and belongs to the operational side of aviation.