Aer Lingus via DealBase offers Aer Lingus Roundtrip Flights to Europe with prices starting at $414.19. (On the DealBase landing page, click on "Aer Lingus" in the top line to see this sale.) That's a buck under our mention from last week and the lowest price we could find for select routes by at least $46. This price is valid on flights from Boston, MA, (BOS) with arrival in Dublin, Ireland, (DUB) departing on May 6 with return on May 21. Book this travel deal by March 21 for travel from April 1 through June 15.

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