$414 Cheap Aer Lingus flights Seattle (SEA) to Dublin (DUB)

You can discover budget-friendly return Aer Lingus flights from $419 from SEA to DUB by filtering your results from "Price (lowest to highest)" on Expedia. Or search for bargains from $414 for a one-way journey.**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.

Scoring the best Aer Lingus deals from SEA to DUB often comes down to timing. You can save 17% on international flights when you book 18 to 29 days before takeoff instead of four to five months ahead. As an added bonus, you can pocket 17% on average by buying your fare on a Sunday rather than a Friday, which is often the most expensive day to book.* It's a good idea to start checking out flights about one month before your travel dates.*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.

To find the earliest departure from SEA to DUB with Aer Lingus, sort your results by "Early Morning" and "Morning." Booking an early flight generally means cancellations are less likely.**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.

Aer Lingus makes traveling from SEA to DUB more enjoyable with a 4-star airline rating and a rewarding loyalty program. You could even start earning points with Aer Lingus AerClub. Be sure to join our free One Key™ rewards program to earn OneKeyCash™*, which can be redeemed on future trips.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.