There are
1,009 mi
from Sioux City, IA to Dunkirk, NY
That's the driving distance. It would take 18 hours 45 mins to go from Sioux City, Iowa to Dunkirk, New York.
The flight distance (direct flight from Sioux City, IA to Dunkirk, NY) is 868.05 mi.
1,009 mi = 1.61 kms