There are
1,407 mi
from Sioux Falls, SD to Danbury, CT
That's the driving distance. It would take 1 day 1 hour to go from Sioux Falls, South Dakota to Danbury, Connecticut.
The flight distance (direct flight from Sioux Falls, SD to Danbury, CT) is 1,190.08 mi.
1,407 mi = 1.61 kms