Continental Airlines is a major American airline based and headquartered in Continental Center I in Downtown Houston, Texas. It is the fourth-largest airline in the US based on revenue passenger miles. Principal operations are from its three hubs at Newark Liberty International Airport, George Bush Intercontinental Airport, and Cleveland Hopkins International Airport. Continental, together with Continental Express and Continental Connection, offers more than 2,400 daily departures throughout the Americas, Europe and the Asia-Pacific region. The summer 2008 schedule saw Continental serving 130 domestic and 132 international destinations. OnePass is the frequent flyer program for Continental Airlines. OnePass elite tiers are Silver, Gold, and Platinum Elite which have benefits such as free upgrades, mileage bonus, priority check-in, priority boarding, and much more. Website: www.continental.com.