United Airlines leads US carriers in transpacific routes

United Airlines leads US carriers in transpacific flights, operating 1,647 long-haul routes to Asia this month. United's top routes from San Francisco include twice-daily flights to Hong Kong, Manila, Seoul, Singapore, and Taipei. The San Francisco to Manila route has the highest capacity. Delta Air Lines ranks second with 892 transpacific flights, its busiest route being to Seoul from Atlanta. American Airlines is third with 481 flights, its primary route connecting Los Angeles to Tokyo Haneda.