Atlanta, Georgia - Landing at Hartsfield-Jackson Atlanta International Airport (2021)

Hartsfield–Jackson Atlanta International Airport (IATA: ATL, ICAO: KATL, FAA LID: ATL), also known as Atlanta Airport, Hartsfield, or Hartsfield–Jackson, is the primary international airport serving Atlanta, Georgia. The airport is located seven miles (11km) south of the Downtown Atlanta district. It is named after former Atlanta mayors William B. Hartsfield and Maynard Jackson. The airport has 192 gates: 152 domestic and 40 international. ATL covers 4,700 acres (1,902 ha) of land and has five parallel runways.

The airport has international service within North America and to South America, Central America, Europe, Africa and Asia. As an international gateway to the United States, Hartsfield–Jackson ranks seventh in international passenger traffic. Many of the nearly one million annual flights are domestic flights; the airport is a major hub for travel in the southeastern region of the country.

Atlanta has been the world's busiest airport by passenger traffic since 1998, and by number of landings and take-offs every year since 2005 except for 2014 and 2018. Hartsfield–Jackson held its ranking as the world's busiest airport in 2012, both in passengers and in number of flights, by accommodating 100 million passengers (more than 260,000 passengers daily) and 950,119 flights. In 2017, it remained the busiest airport in the world with 104 million passengers.

Hartsfield–Jackson is the primary hub of Delta Air Lines, and is a focus city for low-cost carriers Frontier Airlines, Southwest Airlines, and Spirit Airlines. With just over 1,000 flights a day to 225 domestic and international destinations, the Delta hub is the world's largest airline 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's 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 is mostly in unincorporated areas of Fulton and Clayton counties, but it spills into the city limits of Atlanta, College Park, and Hapeville. The airport's domestic terminal is served by MARTA's Red and Gold rail lines.