Icelandair via ShermansTravel offers select Icelandair Roundtrip Fares to Iceland with prices starting at $248.30. (On the ShermansTravel landing page, click on "Icelandair.us" in the top line to see this sale.) This price is valid on flights departing on January 29, 2018, from Boston, MA, (BOS) with arrival in Reykjavik, Iceland, (KEF) and return on February 5. That's the lowest price we could find for select routes by $369. (It's also tied with our mention from last week as the lowest price we've seen on roundtrip airfare on Icelandair.) Book this travel deal by October 31 for travel from January 8, 2018, through March 20.

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