There are
734 mi
from Sioux City, IA to Flower Mound, TX
That's the driving distance. It would take 13 hours 13 mins to go from Sioux City, Iowa to Flower Mound, Texas.
The flight distance (direct flight from Sioux City, IA to Flower Mound, TX) is 656.47 mi.
734 mi = 1,180.79 kms