There are
1,429 mi
from Sioux Falls, SD to Ansonia, CT
That's the driving distance. It would take 1 day 2 hours to go from Sioux Falls, South Dakota to Ansonia, Connecticut.
The flight distance (direct flight from Sioux Falls, SD to Ansonia, CT) is 1,209.73 mi.
1,429 mi = 1.61 kms