Let KAYAK do the searching
Based on KAYAK hotel searches, the most popular destination is Nuku‘alofa (99% of total searches to Tongatapu). The next most popular destinations are Fua‘amotu (1%) and Kanokupolu (1%). Searches for hotels in Ha‘alalo (0%) are also popular.
KAYAK users have found double rooms in Tongatapu for as cheap as $114 (Nuku‘alofa) in the last 3 days. The average price is $180.