Distance calculator

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

KBKT · Allen C Perkinson Blackstone Army Air Field → KBOS · Boston Logan International Airport

Distance
451.1 nm
835.5 km · 519.2 mi
Course (true)
043°
Reverse course
228°
Flight time
1:02

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