Aer Lingus via ShermansTravel offers Aer Lingus Roundtrip Flights to Dublin, Ireland, with prices starting from $475.86. (On the ShermansTravel, click on "AerLingus.com" in the main paragraph to see this sale; we found this price on November 23.) That's the lowest price we could find for select routes by at least $23. Book this travel deal by August 31.

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