Distance calculator

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

KSMD · Smith Field → KBOS · Boston Logan International Airport

Distance
637.0 nm
1,179.8 km · 733.1 mi
Course (true)
079°
Reverse course
268°
Flight time
1:27

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