Miles between Missoula, MT and Ontario, OR

There are
342 mi
from Missoula, MT to Ontario, OR

That's the driving distance. It would take 7 hours 21 mins to go from Missoula, Montana to Ontario, Oregon.

The flight distance (direct flight from Missoula, MT to Ontario, OR) is 242.23 mi.

342 mi = 550.75 kms