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

View $414 flight on Wed, Apr 15, 2026Opens in a new window

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

Prices were available within the past 7 days and start at $414 for one-way flights and $392 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Aer Lingus
Wed, Sep 17 - Thu, Sep 25
SEA
Seattle
DUB
Dublin
$392 Roundtrip, found 3 hours ago
$392
Roundtrip
found 3 hours ago
Select Aer Lingus flight, departing Wed, Sep 17 from Seattle to Dublin, returning Thu, Sep 25, priced at $392 found 3 hours ago
Flights from Seattle (SEA) to Dublin (DUB)
Origin airport
Seattle - Tacoma Intl.
Destination airport
Dublin
Airlines serving
Aer Lingus, Air Canada, Air France, Alaska Airlines, American Airlines, British Airways, Brussels Airlines, Delta, Finnair, Iberia, Icelandair, JetBlue Airways, KLM, Lufthansa, Scandinavian Airlines, Swiss International Air Lines, Turkish Airlines, United, WestJet
Popular airline
Lufthansa
Distance
4526 mi
Average flight time
9 hours 5 mins

Frequently asked questions

How much is an Aer Lingus flight from Seattle - Tacoma Intl. Airport (SEA) to Dublin Airport (DUB)?
You can discover budget-friendly return Aer Lingus flights from $392 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.
What is the cheapest month to fly from SEA to DUB with Aer Lingus?
Search for round-trip or one-way flights to Dublin in January or February. You could find a cheap fare with Aer Lingus during these off-peak months.
What is the cheapest time to book flights from Seattle - Tacoma Intl. Airport (SEA) to Dublin Airport (DUB) with Aer Lingus?
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.
Does Aer Lingus fly nonstop from Seattle - Tacoma Intl. Airport (SEA) to Dublin Airport (DUB)?
Click on our "Nonstop" filter when browsing for direct Aer Lingus flights from SEA to DUB. It's also an easy way to compare other airlines servicing the same direct route.
What is the earliest Aer Lingus flight from SEA to DUB?
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.
What airports does Aer Lingus fly into in Dublin?
Dublin Airport (DUB) is the primary Dublin gateway for Aer Lingus flights from Seattle - Tacoma Intl. Airport (SEA).
What kind of luggage can I take on an Aer Lingus flight from Seattle - Tacoma Intl. Airport (SEA) to Dublin Airport (DUB)?
For checked luggage, passengers can bring 1 checked-in bag weighing up to 50 lb with dimensions not exceeding 62 inches. You can also travel with 1 cabin bag on board when flying standard economy from SEA to DUB with Aer Lingus. This carry-on has to weigh less than 22 lb and be no larger than 21 inches x 15 inches x 9 inches. Exceeding these restrictions can mean additional charges, so check Aer Lingus's baggage allowance guidelines before you start packing.
Why fly with Aer Lingus from SEA to DUB?
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.
Can I change or cancel my Aer Lingus flight from Seattle - Tacoma Intl. Airport (SEA) to Dublin Airport (DUB)?
Typically, you can change or cancel your flight, although there may be additional fees if your booking was made over 24 hours ago. Prefer to keep your options open? Make use of Expedia's "Changes included" and "No cancel fee" filters to find flights that won't charge extra if you have to alter your plans. To make modifications, go to "Trips," select your flight and click on "Manage Booking" for more details.

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*Available to One Key members.