Alaska Airlines Mileage Plan Shopping Alaska Mileage Plan Shopping is an online, one-stop shopping experience where shoppers can purchase products from over 700 online merchants and from select retail stores and receive Mileage Plan™ Miles for their purchases. Alaska Airlines has 1325 cashback stores and has an average rating of 8.3 out of 10 based on 3 reviews. 3 out of 1325 stores (about 0%) have the highest cashback rates in the market.