Washington, D.C. ? United Airlines won tentative approval on Tuesday to operate the first nonstop daily flight between Washington and Beijing, a 14-hour trip that links the countries’ capitals as their economies become more intertwined.

The Department of Transportation’s final OK would give UAL Corp.’s United a route coveted by executives and government officials and potentially worth $200 million a year.

Washington-based fliers who make regular trips to Beijing applauded the news.

“It means that I probably save two to three hours in my flight,” said Richard Bush, a senior fellow at the Brookings Institution. “Anything that gets you into the hotel ahead of the evening rush hour (in Beijing) is great.”

United did not immediately say how much it would charge for the flight. Existing fares for travel between Washington and Beijing start at under $1,000 for economy class and can top $15,000 for first class.

If it wins final approval from the government, the Elk Grove Village, Ill.-based airline can begin nonstop service between Washington Dulles International Airport and Beijing Capital International Airport on March 25.