There are
1,803 mi
from Ontario, CA to Fergus Falls, MN
That's the driving distance. It would take 1 day 7 hours to go from Ontario, California to Fergus Falls, Minnesota.
The flight distance (direct flight from Ontario, CA to Fergus Falls, MN) is 1,410.03 mi.
1,803 mi = 2,901.43 kms