Air China (CA) is one of the largest airlines in the People's Republic of China as well as the country's flag carrier. The airline's primary hub is at Beijing Capital International Airport (PEK), with secondary hubs at eight airports elsewhere in China, including Tibet. As a member of the Star Alliance, Air China operates non-stop flights to about 185 destinations across China and the rest of Asia, as well as the Middle East, Europe, Oceania, North America and South America. Depending on the route and the aircraft, the airline offers First Class, Business Class, Premium Economy Class and Economy Class service.