There are
534 mi
from Flower Mound, TX to San Benito, TX
That's the driving distance. It would take 9 hours 48 mins to go from Flower Mound, Texas to San Benito, Texas.
The flight distance (direct flight from Flower Mound, TX to San Benito, TX) is 476.58 mi.
534 mi = 859.50 kms