There are
1,088 mi
from Katy, TX to Sioux Falls, SD
That's the driving distance. It would take 19 hours 18 mins to go from Katy, Texas to Sioux Falls, South Dakota.
The flight distance (direct flight from Katy, TX to Sioux Falls, SD) is 952.24 mi.
1,088 mi = 1,751.44 kms