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.