This time around there are 3 US cities on the list: Boston, Houston and San Francisco all get 25% off beginning tomorrow 11/1/2017. Travel dates are from 2/1/2017 to 2/28/2017. You can travel between Europe and these cities or vice versa for 18,750 points one way or 37,500 round trip. It’s notable all discounts apply to economy not business. It’s worth remembering that you can transfer points to Flying Blue from all major rewards currencies: Amex MR, Chase UR, Citi TY, and SPG Starpoints.