Miles between Downey, CA and Ontario, OR

There are
857 mi
from Downey, CA to Ontario, OR

That's the driving distance. It would take 16 hours 11 mins to go from Downey, California to Ontario, Oregon.

The flight distance (direct flight from Downey, CA to Ontario, OR) is 699.72 mi.

857 mi = 1,378.54 kms