Singapore Airlines via DealBase offers select Singapore Airlines Roundtrip Flights to Asia and Europe with prices starting from $612.18. (On the DealBase landing page, click on "singaporeair.com" in the top line to see this offer; we found this price departing from Houston on January 20, 2018.) That's tied with our mention from last week and the lowest price we could find for select routes today by at least $218. Book this travel deal by December 31 for travel through March 31, 2018.
All prices, dates, and booking details were valid at the time of publication.