Delta is a global airline that operates a network-centric business connecting millions of passengers annually across domestic and international markets through a large fleet of aircraft serving destinations on six continents. The company generates revenue primarily from passenger ticket sales across multiple service tiers, ancillary services such as baggage and seat fees, and its SkyMiles frequent-flyer loyalty program, which are supplemented by cargo operations, aircraft maintenance and repair services for third parties, vacation packages, and refinery operations. Delta maintains a competitive position through strategic international partnerships and alliances, investment in premium product offerings and fleet modernization, and operational infrastructure spanning major hubs in the United States and internationally.