$268 Cheap Aer Lingus flights Boston (BOS) to Dublin (DUB)

Make use of the "Price (lowest to highest)" filter on Expedia to look for cheap Aer Lingus return flights from $339 from BOS to DUB. Affordable one-way options from $268 are also available.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

To find affordable flights from BOS to DUB with Aer Lingus, begin searching about one month before your intended departure. You can save 17% when you lock in your international tickets 18 to 29 days ahead instead of booking four to five months in advance. Another good tip? Booking on Sunday offers average savings of 17% compared to Friday (the most expensive day).**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.

Setting off from BOS at 5:45PM UTC-5, the earliest Aer Lingus flight to DUB arrives at 4:50AM UTC+0. Flying earlier in the day means you're less likely to encounter delays or cancellations.* Prefer a later start? The last Aer Lingus flight from BOS to DUB departs at 9:10PM UTC-5 and touches down at 8:15AM UTC+0.*Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.

Jetting off from BOS to DUB with Aer Lingus means enjoying a host of perks, including a 4-star airline rating and a rewarding loyalty program. Plus, when you book through Expedia, One Key™ members can earn OneKeyCash™* to spend on select future travel purchases. That's in addition to the Aer Lingus AerClub points you can earn with Aer Lingus.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.