There are
1,409 mi
from Fontana, CA to Seagoville, TX
That's the driving distance. It would take 1 day to go from Fontana, California to Seagoville, Texas.
The flight distance (direct flight from Fontana, CA to Seagoville, TX) is 1,207.91 mi.
1,409 mi = 1.61 kms