Hartsfield–Jackson Atlanta International Airport (IATA: ATL, ICAO: KATL, FAA LID: ATL), known locally as Atlanta Airport, Hartsfield, or Hartsfield–Jackson, is an international airport located seven miles (11 km) south of the central business district of Atlanta, in the U.S. state of Georgia. It has been the world's busiest airport by passenger traffic since 1998, and by number of landings and take-offs from 2005 to 2013, and in 2015. Hartsfield–Jackson held its ranking as the world's busiest airport in 2012, both in passengers and number of flights, by accommodating 100 million passengers (more than 260,000 passengers daily) and 950,119 flights. Many of the nearly one million flights are domestic flights from within the United States, where Atlanta serves as a major hub for travel throughout the Southeastern United States. The airport has 207 domestic and international gates.
Hartsfield–Jackson is the primary hub of Delta Air Lines, Delta Connection, and Delta Air Lines partner, ExpressJet and is a focus city for low-cost carriers Frontier Airlines, Southwest Airlines, and Spirit Airlines. With just over 1,000 flights a day, the Delta Air Lines hub is the world's largest hub. Delta Air Lines flew 75.4% of the airport's passengers in February 2016, Southwest flew 9.2%, and American Airlines flew 2.5%. In addition to hosting Delta Air Lines corporate headquarters, Hartsfield–Jackson is also the home of Delta's Technical Operations Center, which is the airline's primary maintenance, repair and overhaul arm. The airport has international service to North America, South America, Central America, Europe, Asia and Africa. As an international gateway to the United States, Hartsfield–Jackson ranks sixth.
The airport is located mostly in unincorporated areas in Fulton and Clayton counties. However, the airport spills into the city limits of Atlanta, College Park and Hapeville. The airport's domestic terminal is served by MARTA's Red/Gold rail line.