Distance calculator

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

KDFI · Defiance Memorial Airport → KBOS · Boston Logan International Airport

Distance
602.7 nm
1,116.3 km · 693.6 mi
Course (true)
080°
Reverse course
269°
Flight time
1:22

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