United Airlines has updated the united.com Web site to provide additional booking options and easier navigation. Members can now search for flights by schedule, price or flexible dates and can select and change seat assignments. Mileage Plus members are able to access past itineraries and view available dates for award tickets if their desired travel dates are unavailable. United promises fewer clicks for members navigating the site to plan and book travel, check flight status, purchase upgrades, check in for flights and to manage their Mileage Plus accounts. Mileage Plus members can earn up to 500 bonus miles for each qualifying travel purchase at united.com.