United Cardholders: Fly To Select European Cities For 50K Miles Round-Trip Fly between the US and Amsterdam, Brussels, Frankfurt, London, or Paris for 50K miles round-trip instead of 60K-80K miles. Book by 9/10 Travel 9/15-12/12 on dates with saver award space. Valid for United economy only. Round-trip travel required. Not valid with open-jaw or stopover. […]