There are
1,587 mi
from Sioux City, IA to Westminster, CA
That's the driving distance. It would take 1 day 4 hours to go from Sioux City, Iowa to Westminster, California.
The flight distance (direct flight from Sioux City, IA to Westminster, CA) is 1,314.92 mi.
1,587 mi = 2,554.33 kms