Cash Back Restrictions: Cash back is not issued until after the travel and/or rental is completed. Purchases made using external coupons or promotional codes not found on this site are not eligible for Cash back. Cash back is not available on taxes, travel insurance, phone orders, or any carrier fees. Cash back is not available on orders placed through Priceline's mobile app. Orders that were not placed on the www.priceline.com website are not eligible for Cash back.