Earn up to 20,000 Mileage Plus miles when purchasing United Vacation packages in the U.S. or Canada and traveling by Sept. 1, 2007. You can earn 7,500 bonus miles if you take two or more packages; 12,500 miles when taking three packages and four or more packages will net you 20,000 bonus miles. Packages are defined as a flight plus hotel stay or a flight plus a car rental. United Vacations offers vacation packages to nearly 200 cities across the U.S. and over a dozen cities in Canada. Enter promotion code SEEUV at time of booking.