There are
727 mi
from Sioux City, IA to Ionia, MI
That's the driving distance. It would take 13 hours 27 mins to go from Sioux City, Iowa to Ionia, Michigan.
The flight distance (direct flight from Sioux City, IA to Ionia, MI) is 575.41 mi.
727 mi = 1,169.20 kms