Aer Lingus via DealBase offers Aer Lingus Roundtrip Flights to Europe with prices starting at $395.59. (On the DealBase landing page, click on "Aer Lingus" in the top line to see this sale.) That's tied with our mention from last week as the lowest price we've seen on roundtrip fares from Aer Lingus. (It's the best deal for select routes today by at least $103.) Book this travel deal by September 26 for travel from November 1 through March 31, 2018.

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