Miles between Ontario, CA and St Louis, MO

There are
1,795 mi
from Ontario, CA to St Louis, MO

That's the driving distance. It would take 1 day 7 hours to go from Ontario, California to St Louis, Missouri.

The flight distance (direct flight from Ontario, CA to St Louis, MO) is 1,553.80 mi.

1,795 mi = 1.61 kms