There is a code for 5% off up to 6 flights in the Entertainment book. You must have a registered book to use the code (we've already used ours, or I would offer it to you). But, depending on the cost of the flights, it might be worth it to buy the book. In the past few weeks we've saved $65 with our $20 book ($15 on one plane ticket and $50 on a rental car).