Priority Club Rewards members who book a stay that includes a Friday, Saturday or Sunday night at any IHG brand hotel in the U.S. by Dec. 31, 2010 and stay between Nov. 5 and April 30, 2011 will receive a $50 flight credit. The offer is only open to U.S. residents and registration is required at www.ihg.com/50Free. After completing an eligible stay, you will receive an email within two to four weeks with your $50 award and PIN code. You must register your award online within 30 days at http://www.activateaward.com/IHG-FFC – The $50 discount can be used on any roundtrip airline ticket on a single carrier to any destination, but you must book travel through the travel agent for this promotion, ATG. The $50 discount is valid for three months from when you register and all travel must be completed within three months of booking your flight. A Saturday night stay is required and the flight must be booked with 21-day advance notice. This offer is not transferable and the $50 discount can only be applied to the flight of the Priority Club Rewards member who earned the discount award. There is no limit to the number of discounts you can earn.