There are
1,563 mi
from Seattle, WA to South Sioux City, NE
That's the driving distance. It would take 1 day 2 hours to go from Seattle, Washington to South Sioux City, Nebraska.
The flight distance (direct flight from Seattle, WA to South Sioux City, NE) is 1,307.55 mi.
1,563 mi = 1.61 kms