Distance calculator

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

KIAD · Washington Dulles International Airport → KSTL · St. Louis Lambert International Airport

Distance
603.5 nm
1,117.7 km · 694.5 mi
Course (true)
273°
Reverse course
085°
Flight time
1:22

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