There are
1,541 mi
from Sioux Falls, SD to Oak Harbor, WA
That's the driving distance. It would take 1 day 3 hours to go from Sioux Falls, South Dakota to Oak Harbor, Washington.
The flight distance (direct flight from Sioux Falls, SD to Oak Harbor, WA) is 1,282.45 mi.
1,541 mi = 2,480.49 kms