There are
818 mi
from Lewisville, TX to Sioux Falls, SD
That's the driving distance. It would take 14 hours 26 mins to go from Lewisville, Texas to Sioux Falls, South Dakota.
The flight distance (direct flight from Lewisville, TX to Sioux Falls, SD) is 725.92 mi.
818 mi = 1,316.23 kms