Distance calculator

Great-circle distance. Enter an airport ICAO / IATA code or coordinates (for example 52.1657, 20.9671).

KIAD · Washington Dulles International Airport → KLSF · Lawson Army Air Field

Distance
540.6 nm
1,001.2 km · 622.1 mi
Course (true)
225°
Reverse course
041°
Flight time
1:14

Straight great-circle distance, not a route. Course is true, not magnetic.