Miles between Ontario, CA and Prospect Heights, IL

There are
1,984 mi
from Ontario, CA to Prospect Heights, IL

That's the driving distance. It would take 1 day 10 hours to go from Ontario, California to Prospect Heights, Illinois.

The flight distance (direct flight from Ontario, CA to Prospect Heights, IL) is 1,698.47 mi.

1,984 mi = 1.61 kms