Hartsfield-Jackson Airport, the world's busiest airport (more than 92 million passengers in 2011) serves which US city?
Hartsfield–Jackson Atlanta International Airport of the nearly one million flights are domestic flights from within the United States, where the airport serves as a major hub for travel throughout 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 from 2005 to 2013, losing that title to Chicago–O'Hare in 2014, but regaining it a year later. 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. In 2017,
Hartsfield–Jackson Atlanta International Airport it remained the busiest airport in the world with 104 million passengers. Hartsfield–Jackson is the primary hub of Delta, and is a focus city for low-cost carriers Frontier, Southwest, and Spirit. With just over 1,000 flights a day, the Delta 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 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