There are
1,981 mi
from Fontana, CA to Mundelein, IL
That's the driving distance. It would take 1 day 10 hours to go from Fontana, California to Mundelein, Illinois.
The flight distance (direct flight from Fontana, CA to Mundelein, IL) is 1,685.18 mi.
1,981 mi = 1.61 kms