Delta Air Lines flights
Delta Air Lines is the second largest airline in the world, and also one of the oldest operating airlines on the commercial market. This American airline has nine hubs, with Atlanta being the biggest one. Some of the others are Minneapolis, Detroit and New York. Delta Air Lines is a part of the airline alliance SkyTeam and offers flights to most parts of the world, even if the majority of their operations are domestic.
An airline hub is an airport where the airline has a heavy presence and normally some kind of headquarters. On the other hand, a focus city is a destination where the airline operates limited point-to-point routes. In these cities, the airline doesn’t necessarily need to have an office (even though this sometimes is the case). Many low-cost airlines don't use the definition 'hub' but instead define their main airports of operations as an operating base.
IATA Code: DL
ICAO Code: DAL