Distance calculator

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

KBUF · Buffalo Niagara International Airport → KBOS · Boston Logan International Airport

Distance
342.7 nm
634.8 km · 394.4 mi
Course (true)
093°
Reverse course
278°
Flight time
0:47

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