Distance calculator

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

CYLS · Barrie-Lake Simcoe Regional Airport → KBOS · Boston Logan International Airport

Distance
393.7 nm
729.1 km · 453.0 mi
Course (true)
106°
Reverse course
292°
Flight time
0:54

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