Icelandair via DealBase offers select Icelandair Roundtrip Fares to Europe with prices starting at $349. (On the DealBase landing page, click on "Iceland Air" in the top line to see this sale.) This price is valid on flights departing on April 26 from Boston, MA, (BOS) with arrival in Reykjavik, Iceland, (KEF) and return on May 3. That's the lowest price we could find for select routes by $122. Book this travel deal by February 14 for flights from March 25 through June 20. All prices, dates, and booking details were valid at the time of publication.