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Based on KAYAK hotel searches, the most popular destination is Rapid City (43% of total searches to South Dakota). The next most popular destinations are Deadwood (29%) and Sioux Falls (23%). Searches for hotels in Keystone (5%) are also popular.
KAYAK users have found double rooms in South Dakota for as cheap as C$ 234 (Spearfish) in the last 3 days. The average price is C$ 234.