Callsign KLM is KLM
WHAT AIRLINE IS KLM?
KLM is the ICAO three-letter callsign prefix for KLM. When a radio scanner, flight tracker or radar scope shows a flight like KLM123 or KLM45XY overhead, that's a KLM aircraft talking to air traffic control.
Spot one yourself: open the live scope, enter your postcode, and tap any blip whose callsign starts with KLM for its type, registration, route and photo.