Alaska Airlines Mileage Plan is offering an award sale on Horizon Air with some destinations available for as few as 15,000 miles roundtrip. Members can save 5,000 miles off the regular 20,000-mile roundtrip award ticket and 2,500 miles off the regular 10,000-mile one-way coach saver award when you fly Horizon Air between Seattle and Kelowna or Prince George, or between Portland, Ore. and Vancouver. The reduced awards are available through Aug. 31, 2008 and awards must be booked online at alaskaair.com. No stopovers are allowed. Move fast — seats will go quickly.