Aer Lingus via DealBase offers Aer Lingus Roundtrip Flights to Europe with prices starting at $495.52. (On the DealBase landing page, click on "Aer Lingus" in the top line to see this sale.) That's the lowest price we could find for select routes by at least $21. This price is valid on flights departing on September 27 from Boston, MA, (BOS) with arrival in Dublin, Ireland, (DUB) and return on October 3. This sale includes routes to Barcelona, Spain, (BCN); Paris, France, (CDG); Amsterdam, Holland, (AMS); and more. Book this travel deal by May 24 for travel from September 1 through October 31.

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