US airlines fight for China routes

United Airlines plans to start new flight services between California and two Chinese cities in the next two years to exploit the booming U.S.-China route, but the airline is facing stiff competition from other U.S. carriers. In an application submitted last month to the U.S. Department of Transportation, United said it planned daily nonstop flights between Los Angeles and Shanghai beginning in 2009, and between San Francisco and Guangzhou in 2008.