There are
1,555 mi
from Fontana, CA to Weslaco, TX
That's the driving distance. It would take 1 day 2 hours to go from Fontana, California to Weslaco, Texas.
The flight distance (direct flight from Fontana, CA to Weslaco, TX) is 1,281.80 mi.
1,555 mi = 1.61 kms