There are
944 mi
from Huntsville, AL to Sioux City, IA
That's the driving distance. It would take 17 hours 41 mins to go from Huntsville, Alabama to Sioux City, Iowa.
The flight distance (direct flight from Huntsville, AL to Sioux City, IA) is 753.25 mi.
944 mi = 1,519.96 kms