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$299+ Cheap flights from Seattle (SEA) to Ireland

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/17. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — DUB
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Cheap flight deals from Seattle to Ireland

Cheapest flights from Seattle to Ireland
Explore the most affordable flight options available from Seattle to Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.

This Mytrip deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/292:35 pmSEA - DUB
1 stop11h 40mIcelandair
Wed 1/1411:30 amDUB - SEA
1 stop13h 30mIcelandair
Deal found 12/10$503
This SmartFares deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/297:00 amSEA - DUB
1 stop17h 10mMultiple Airlines
Wed 1/149:00 amDUB - SEA
2 stops18h 16mMultiple Airlines
Deal found 12/10$525
This United Airlines deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2911:59 pmSEA - DUB
2 stops23h 31mUnited Airlines
Wed 1/149:30 amDUB - SEA
2 stops33h 59mUnited Airlines
Deal found 12/10$625
This Delta deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/166:00 amSEA - DUB
1 stop17h 45mDelta
Tue 1/135:55 amDUB - SEA
1 stop13h 55mDelta
Deal found 12/10$686
This Ovago deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/108:05 pmSEA - DUB
Nonstop9h 05mAer Lingus
Wed 4/153:20 pmDUB - SEA
Nonstop9h 39mAer Lingus
Deal found 12/10$688
This Cheapflightsfares deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1010:40 amSEA - DUB
1 stop13h 30mMultiple Airlines
Wed 4/156:00 amDUB - SEA
1 stop14h 20mMultiple Airlines
Deal found 12/10$699
This United Airlines deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/108:40 amSEA - DUB
2 stops17h 15mUnited Airlines
Wed 4/159:50 amDUB - SEA
2 stops33h 52mUnited Airlines
Deal found 12/10$710
This FlightHub deal was found by Cheapflights users on 12/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/107:00 amSEA - DUB
1 stop17h 10mLufthansa
Wed 12/1712:05 pmDUB - SEA
1 stop16h 49mLufthansa
Deal found 12/9$730
This Delta deal was found by Cheapflights users on 12/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/102:05 pmSEA - DUB
1 stop17h 40mDelta
Wed 12/178:50 amDUB - SEA
2 stops19h 33mDelta
Deal found 12/9$732
This Kiwi.com deal was found by Cheapflights users on 12/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/117:00 amSEA - DUB
1 stop17h 10mLufthansa
Wed 12/2410:40 amDUB - SEA
1 stop16h 06mLufthansa
Deal found 12/9$733
This Gotogate deal was found by Cheapflights users on 12/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/123:40 pmSEA - ORK
2 stops23h 45mMultiple Airlines
Fri 12/197:40 amORK - SEA
2 stops19h 36mMultiple Airlines
Deal found 12/11$1,507
This KLM deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/243:05 pmSEA - ORK
1 stop35h 40mKLM
Wed 12/3111:15 amORK - SEA
2 stops19h 10mKLM
Deal found 12/10$1,750

Find flight deals from Seattle to Ireland

Keep the following information in mind while searching for Seattle to Ireland flight deals. Data was last updated December 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$423
(Icelandair)

One-way from

$299
(CheapOair)

Popular in

June

Cheapest in

November

Average price

$658

Good round-trip deal

$562 or less

Good one-way deal

$435 or less
Provider with most accurate pricing for Seattle/Tacoma Intl-Dublin flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Dublin flights.
Search Deals
From Seattle/Tacoma Intl to Ireland
Search Deals
One-way flight from Seattle/Tacoma Intl to Ireland
Search Deals
Highest demand for flights based on searches. 21% potential increase in price ($182 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($30 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Seattle/Tacoma Intl to Ireland.
Search Deals
Price to beat on a one-way flight from Seattle/Tacoma Intl to Ireland.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Ireland that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 12, 2025.
Use the filters below to find and compare flights from Seattle to Ireland that are best for you.

Fly from

Seattle

Fly to

Ireland

Route

Depart

Return

Price

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Mon 1/12

2:35 pm-10:15 am

1 stop11h 40m

Dublin

Wed 2/11

11:30 am-5:00 pm

1 stop13h 30m

$423

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Tue 1/13

2:35 pm-10:15 am

1 stop11h 40m

Dublin

Sun 2/15

11:30 am-5:00 pm

1 stop13h 30m

$461

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Sun 3/1

7:15 am-11:30 am

2 stops20h 15m

Shannon

Tue 3/10

7:50 am-5:55 pm

1 stop17h 05m

$474

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Mon 1/12

7:00 am-8:10 am

1 stop17h 10m

Dublin

Wed 2/11

9:00 am-10:43 pm

2 stops45h 43m

$475

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Tue 1/13

10:58 am-8:10 am

1 stop13h 12m

Dublin

Fri 2/13

9:00 am-7:03 pm

2 stops42h 03m

$475

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Mon 1/12

7:00 am-8:10 am

1 stop17h 10m

Dublin

Fri 2/13

9:00 am-7:03 pm

2 stops42h 03m

$475

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Tue 4/21

11:44 am-9:45 am

2 stops38h 01m

Dublin

Wed 5/6

9:20 am-9:21 am

1 stop32h 01m

$479

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sun 1/11

2:35 pm-10:15 am

1 stop11h 40m

Dublin

Wed 2/11

11:30 am-5:00 pm

1 stop13h 30m

$481

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sat 1/10

2:35 pm-10:15 am

1 stop11h 40m

Dublin

Tue 2/10

11:30 am-5:00 pm

1 stop13h 30m

$481

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sat 1/10

2:35 pm-10:15 am

1 stop11h 40m

Dublin

Wed 2/11

11:30 am-5:00 pm

1 stop13h 30m

$481

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Showing 1-10 of 45 results
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Best time to book a flight from Seattle to Ireland

Have a flexible travel schedule? Discover the best time to fly to Ireland from Seattle with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Seattle to Ireland

What is the cheapest month to book a flight from Seattle to Ireland?

Currently, November is the cheapest month in which you can book a flight from Seattle to Ireland (average of $308). Flying from Seattle to Ireland in June is currently the most expensive (average of $676). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SEA to IE?

Find hourly flight availability from Seattle to Ireland. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 12, 2025.

A simple way to save on the total cost of your ticket is to fly from Seattle to Ireland in the morning. If you’re flexible enough to do this you can expect to save up to 13% on your trip compared to booking a flight in the evening.

What is the cheapest day to fly from Seattle to Ireland?

Use this chart to determine the cheapest time to fly round-trip from Seattle to Ireland. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Seattle to Ireland flight should consider departing on Tuesday mornings when fares are most often at their lowest. Wednesday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Ireland

Get insights into the airlines that provide service to Ireland. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ireland. Reviews last updated December 12, 2025.
Read reviews from past customers who have flown United Airlines, American Airlines, and Aer Lingus from Seattle to Ireland. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,095 reviews

Entertainment

7.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.1

Food

6.6

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.
United Airlines
7.4
Good
9,095 reviews
United Airlines
7.4
Good
9,095 reviews

Entertainment

7.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.1

Food

6.6

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.
American Airlines
7.2
Good
11,050 reviews
United Airlines
7.4
Good
9,095 reviews

Entertainment

7.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.1

Food

6.6

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.
Aer Lingus
7.2
Good
1,394 reviews
United Airlines
7.4
Good
9,095 reviews

Entertainment

7.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.1

Food

6.6

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.
Icelandair
7.0
Good
589 reviews
United Airlines
7.4
Good
9,095 reviews

Entertainment

7.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.1

Food

6.6

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.
British Airways
6.7
Okay
7,571 reviews
United Airlines
7.4
Good
9,095 reviews

Entertainment

7.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.1

Food

6.6

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Ireland. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Seattle to Ireland?

    Located just 11.4 mi from the city center, Seattle/Tacoma Intl (SEA) is the airport most travelers will use when flying to Ireland from Seattle.

  • How popular is this Seattle to Ireland flight route?

    This flight path from Seattle/Tacoma Intl to Ireland was viewed by 14 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Seattle to Ireland?

    There are many flights that can get you from Seattle to Ireland in 11h 40m. Fly via Icelandair, American Airlines, or United Airlines to get the fastest option. Airlines will cover a distance of 4523 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Seattle to Ireland one-way?

    To fly one-way, consider booking your trip with Icelandair, which is currently one of the cheapest options available, starting at $179. WestJet flights start at $234 while deals on British Airways start at $278 one-way.

  • What are the most popular routes from Seattle to Ireland?

    The most popular flight routes from Seattle to Ireland are Seattle/Tacoma Intl - Dublin, Seattle/Tacoma Intl - Cork and Seattle/Tacoma Intl - Shannon.

  • What are the most reliable airlines from Seattle to Ireland?

    No one likes to see their flight delayed. When booking a flight from Seattle to Ireland consider choosing American Airlines (58%), Aer Lingus (58%) or British Airways (58%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Seattle to Ireland?

    Looking for the cheapest flight from Seattle to Ireland? While on average our users pay $1,662, our data indicates the cheapest price to be $395. The most popular route (Seattle/Tacoma Intl - Dublin), is priced around $393.

  • Can I find deals for flights from Seattle to Ireland that include hotel bookings?

    Yes. In addition to deals on Seattle to Ireland flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Ireland?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Ireland.

  • Can I find deals for business class flights from Seattle to Ireland?

    Yes. Cheapflights offers flight deals from Seattle to Ireland by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Seattle to Ireland?

    Currently, November is the cheapest month in which you can book a flight from Seattle to Ireland (average of $308). Flying from Seattle to Ireland in June is currently the most expensive (average of $676). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 10 airlines flying from Seattle to Ireland

Discover the top 10 airlines that operate flights from Seattle to Ireland. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$101Average$402FlexibilityNo cancel feeOn-time62%
Air CanadaCheapest$341Average$643FlexibilityNo cancel feeOn-time67%
IcelandairCheapest$358Average$567FlexibilityNo cancel feeOn-time76%
IberiaCheapest$367Average$512FlexibilityNo cancel feeOn-time77%
KLMCheapest$405Average$714FlexibilityNo cancel feeOn-time75%
Aer LingusCheapest$412Average$763FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$418Average$843FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$431Average$724FlexibilityNo cancel feeOn-time69%
Scandinavian AirlinesCheapest$444Average$492FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$467Average$723FlexibilityNo cancel feeOn-time76%

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