Miles between Great Falls, MT and Seatac, WA

There are
647 mi
from Great Falls, MT to Seatac, WA

That's the driving distance. It would take 11 hours 54 mins to go from Great Falls, Montana to Seatac, Washington.

The flight distance (direct flight from Great Falls, MT to Seatac, WA) is 514.25 mi.

647 mi = 1,041.93 kms