Distance calculator

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

KLMS · Louisville Winston County Airport → KSTL · St. Louis Lambert International Airport

Distance
342.3 nm
634.0 km · 393.9 mi
Course (true)
350°
Reverse course
169°
Flight time
0:47

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