Currently, the cheapest times in the year to fly to Hong Kong are April/2020 and November/2019. You will pay the most in October/2019.
Singapore Airlines, Cathay Pacific, United and American Airlines fly non-stop between the United States of America and Hong Kong.
Hong Kong Airlines is the cheapest airline that flies from the United States of America to Hong Kong.
Singapore Airlines is the best airline to fly from the United States of America to Hong Kong and it has direct flights.