Ending today, Singapore Airlines via ShermansTravel offers select Singapore Airlines International Roundtrip Flights on sale for as low as $629.47. (On the ShermansTravel landing page, click on "SingaporeAir.com" in the main paragraph to see this offer.) That's the lowest price we could find by at least $48, although we saw fares for $134 less last week (since expired). This price is valid on flights departing on January 22, 2017 from Houston, TX, (IAH) with arrival in Manchester, England, (MAN), with return on January 29, 2017. This sale includes flights to Manila, Philippines, (MNL); Kuala Lumpur, Malaysia (KUL); Bangkok, Thailand, (BKK); and more. Book this travel deal by today for travel from January 1, 2017 through October 31, 2017.

All prices, dates, and booking details were valid at the time of publication.