Which airline is represented by the IATA code DL?

The IATA code DL is designated to Delta Air Lines. Each airline is assigned a unique three-letter code by the International Air Transport Association (IATA) for identification purposes in ticketing and scheduling. Delta Air Lines, one of the major airlines in the United States, is recognized globally by its IATA code DL, making it easily identifiable in airline reservations systems, airport displays, and boarding passes.

In contrast, American Airlines is represented by the code AA, Republic Airways has its own separate designations under its regional operations, and United Airlines is known by the code UA. This differentiation helps passengers, travel agents, and airline staff quickly and accurately communicate which airline is being referred to without confusion.