United Mileage Plus Shopping
United Air Lines is the world's largest airline, after merging with Continental, and now they offer one of the most extensive networks of flights across the US and internationally. Like most airlines, United has a frequent flyer program to reward its best customers, called United Mileage Plus. Members earn miles for flights taken on United or any of its partner airlines, and earn bonus miles by shopping online through United Mileage Plus Shopping, which offers extra miles for dollars spent at hundreds of online stores.