There are
515 mi
from Sioux City, IA to Fayetteville, AR
That's the driving distance. It would take 9 hours 30 mins to go from Sioux City, Iowa to Fayetteville, Arkansas.
The flight distance (direct flight from Sioux City, IA to Fayetteville, AR) is 460.62 mi.
515 mi = 829.36 kms