Let KAYAK do the searching
Based on KAYAK hotel searches, the most popular destination is Nakhon Ratchasima (70% of total searches to Khao Yai). The next most popular destinations are Nakhon Nayok (11%) and Ban Tha Maprang (11%). Searches for hotels in Mu Si (7%) are also popular.
KAYAK users have found double rooms in Khao Yai for as cheap as $23 (Mu Si) in the last 3 days. The average price is $124.