Delta Airlines offers roundtrip flights to Asia for as low as $860.50. (Click on "Delta Airlines" in the top line to see this sale; all taxes are included.) That's the lowest price we could find for select routes by $15. This price is valid on flights departing from Seattle, WA, (SEA) with arrival in Hong Kong, China, (HKG) on January 7 and return on January 14; prices vary depending on the departure cities and dates chosen. Book this travel deal by October 20 for travel through March 9, 2015. Click here to see more routes.