Delta Air Lines, Inc. provides scheduled air transportation for passengers and cargo in the United States and internationally. The company operates through two segments, Airline and Refinery. Its route network is centered around a system of hubs, international gateways, and airports in Amsterdam, Atlanta, Boston, Detroit, London-Heathrow, Los Angeles, Minneapolis-St. Paul, New York-LaGuardia, New York-JFK, Paris-Charles de Gaulle, Salt Lake City, Seattle, and Tokyo-Narita. The company sells its tickets through various distribution channels, including delta.com and mobile, telephone reservations, traditional brick and mortar, and online travel agencies. It also provides aircraft maintenance, repair, and overhaul services; staffing, and professional security and training services, as well as aviation solutions to third parties; vacation packages to third-party consumers; and aircraft charters, and aircraft management and programs. As of February 3, 2016, the company operated a fleet of approximately 800 aircrafts. Delta Air Lines, Inc. was founded in 1924 and is headquartered in Atlanta, Georgia.