Hainan Airlines via DealBase discounts select round-trip flights to China, with prices starting from $376. That's the lowest price we could find for select routes by $18; however, many 3- and 4-star carriers charge $500 or more for the same route. (Hainan Airlines is a 5-star carrier.) Book this travel deal by September 30 for travel through the same date. Buy Now Tips On the DealBase landing page, click on "Hainan Air" in the top line to see this sale; we found lower fares within. On Hainan's sale page, you may have to click "Search Flights" under "Plan & Book" in the top banner to search for flights. We found this price on flights departing on September 4 from Los Angeles, CA (LAX) to Shanghai, China (PVG), with return on September 9. All prices, dates, and booking details were valid at the time of publication.