At Cathay Pacific, book a roundtrip flight to Hong Kong from select U.S. cities and get a roundtrip flight from Hong Kong to Japan free as part of Cathay Pacific's Deal of the Month Sale. With prices starting from $1,135.83, that's $49 under yesterday's mention of return flights to Hong Kong without the add-on Japan flights. It's also $1,468 less than booking these Cathay Pacific flights separately. Book this travel deal by June 15 for select travel September 1 through December 9. Sample Itinerary for $1,135.83:

Flight 1: New York (JFK) to Hong Kong (HKG) on September 12

Flight 2: Hong Kong (HKG) to Osaka (KIX) on September 20

Flight 3: Osaka (KIX) to Hong Kong (HKG) on September 30

Flight 4: Hong Kong (HKG) to New York (JFK) on September 30