There are
1,338 mi
from Sioux City, IA to Stamford, CT
That's the driving distance. It would take 1 day to go from Sioux City, Iowa to Stamford, Connecticut.
The flight distance (direct flight from Sioux City, IA to Stamford, CT) is 1,178.61 mi.
1,338 mi = 1.61 kms