WOW Air via ShermansTravel offers WOW Air 1-Way Flights to Europe from select cities in the U.S. with prices starting from $99.99. (On the ShermansTravel landing page, click on "WowAir.US" in the main paragraph to see this sale.) That's the lowest price we could find by $117. This price is valid on flights departing from Washington, D.C., (BWI) with arrival in Reykjavik, Iceland, (KEF) on September 16. Note that this airline is a "non-bundle" airline, so seat reservation and luggage costs are additional. Book this travel deal by July 31.

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