There are
1,390 mi
from Sioux Falls, SD to Westbury, NY
That's the driving distance. It would take 1 day 1 hour to go from Sioux Falls, South Dakota to Westbury, New York.
The flight distance (direct flight from Sioux Falls, SD to Westbury, NY) is 1,195.54 mi.
1,390 mi = 1.61 kms