Distance calculator

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

KMHT · Manchester-Boston Regional Airport → KGAI · Montgomery County Airpark

Distance
343.9 nm
637.0 km · 395.8 mi
Course (true)
231°
Reverse course
047°
Flight time
0:47

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