Distance calculator

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

KFDK · Frederick Municipal Airport → KPSM · Portsmouth International Airport at Pease

Distance
368.3 nm
682.0 km · 423.8 mi
Course (true)
051°
Reverse course
236°
Flight time
0:50

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