Distance calculator

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

KPLD · Portland Municipal Airport → KBOS · Boston Logan International Airport

Distance
639.3 nm
1,183.9 km · 735.6 mi
Course (true)
075°
Reverse course
264°
Flight time
1:27

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