Delta Air Lines is a major United States airline.
Formed as Huff Daland Dusters, in 1924, and began acting as a passenger airline in late 1929.
The airline was purchased in 1928, and renamed into Delta Air Service.
Some airlines were enquired and merged into Delta Air Lines during the years:
Chicago and Southern Air Lines (C&S) (1953), Northeast Airlines (1972), Western Airlines (1986), Northwest (2008)