And a free flight to Hawaii or other exotic locales usually requires that you stay in a selected hotel for a week at the listed or ''rack" rates
http://www.boston.com/travel/articles/2003/11/16/sweet_swaps_new_book_has_tips_for_home_exchange_trips/

Whether you're looking to book a vacation or coming over for a long weekend getaway or business trip we have the right flight to Hawaii for you.
http://www.airtohawaii.com/