Callsign DAL is Delta Air Lines
WHAT AIRLINE IS DAL?
DAL is the ICAO three-letter callsign prefix for Delta Air Lines. When a radio scanner, flight tracker or radar scope shows a flight like DAL123 or DAL45XY overhead, that's a Delta Air Lines aircraft talking to air traffic control.
Spot one yourself: open the live scope, enter your postcode, and tap any blip whose callsign starts with DAL for its type, registration, route and photo.