Distance calculator

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

KNUI · Naval Outlying Landing Field Webster → KBOS · Boston Logan International Airport

Distance
354.5 nm
656.6 km · 408.0 mi
Course (true)
043°
Reverse course
226°
Flight time
0:48

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