That's the lowest price we could find for select routes by at least $126. Buy Now at DealBase Tips We found this price on flights departing from Hartford, CT (BDL) with arrival in Dublin, Ireland (DUB) on March 25 and return on March 31. On the DealBase landing page, click "Aer Lingus" in the top line to see this sale. Book this travel deal by January 7 for travel from January 20 through March 31. All prices, dates, and booking details were valid at the time of publication.