Callsign OAL is Olympic Air
WHAT AIRLINE IS OAL?
OAL is the ICAO three-letter callsign prefix for Olympic Air. When a radio scanner, flight tracker or radar scope shows a flight like OAL123 or OAL45XY overhead, that's a Olympic Air aircraft talking to air traffic control.
Spot one yourself: open the live scope, enter your postcode, and tap any blip whose callsign starts with OAL for its type, registration, route and photo.