There are
1,560 mi
from Seattle, WA to Sioux City, IA
That's the driving distance. It would take 1 day 2 hours to go from Seattle, Washington to Sioux City, Iowa.
The flight distance (direct flight from Seattle, WA to Sioux City, IA) is 1,307.12 mi.
1,560 mi = 1.61 kms