Miles between Billings, MT and Ontario, CA

There are
1,204 mi
from Billings, MT to Ontario, CA

That's the driving distance. It would take 21 hours 11 mins to go from Billings, Montana to Ontario, California.

The flight distance (direct flight from Billings, MT to Ontario, CA) is 942.36 mi.

1,204 mi = 1.61 kms