There are
786 mi
from Flint, MI to Sioux City, IA
That's the driving distance. It would take 14 hours 22 mins to go from Flint, Michigan to Sioux City, Iowa.
The flight distance (direct flight from Flint, MI to Sioux City, IA) is 645.29 mi.
786 mi = 1,265.42 kms