Delta Air Lines is a major airline in the United States headquartered in Atlanta, Georgia. It is the United States' oldest operating airline and the seventh-oldest operating worldwide. Delta, along with its subsidiaries and regional affiliates, including Delta Connection, operates over 5,400 flights daily and serves 325 destinations in 52 countries on six continents. Delta is a founding member of the SkyTeam airline alliance. As of the end of 2023, it had 100,000 employees. Delta has nine hubs, with Hartsfield–Jackson Atlanta International Airport being its largest in terms of total passengers and number of departures. It is ranked second among the world's largest airlines by number of passengers carried, passenger miles flown, and fleet size. It is ranked first by revenue for commercially owned airline companies as well as in brand value, and 113th on the Fortune 500. Wikipedia