There are a few ways to accumulate points when you book your airline tickets with Expedia. If you've joined the Harbour Air rewards program, High flyer Rewards, enter your membership number at the final stages of booking to check your flight's eligibility. Shopping, with restaurant reservations and flying with the airline are other ways you can rack up points through High flyer Rewards. Plus, as a member of One Key™, our free travel rewards program, you can earn OneKeyCash™* on top of your airline miles. *Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.