Let KAYAK do the searching
Based on KAYAK hotel searches, the most popular destination is Banff (55% of total searches to Rocky Mountains). The next most popular destinations are Lake Louise (16%) and Jasper (15%). Searches for hotels in Canmore (14%) are also popular.
KAYAK users have found double rooms in Rocky Mountains for as cheap as $60 (Bozeman) in the last 3 days. The average price is $468.