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Ireland

$217+ 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 4/20. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — DUB
Apr 16 — Apr 231
Thu 4/16
Thu 4/23
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 March 17, 2026.

This CheapOair deal was found by Cheapflights users on 3/12. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/283:55 pm
SEA
-
DUB
1 stop33h 30m
Scandinavian Airlines
Mon 9/77:50 pm
DUB
-
SEA
2 stops25h 55m
Scandinavian Airlines
Deal found 3/12$544
This FlightHub deal was found by Cheapflights users on 3/16. 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.
Tue 9/1512:00 pm
SEA
-
DUB
2 stops39h 50m
Scandinavian Airlines
Thu 9/2412:40 pm
DUB
-
SEA
1 stop33h 05m
Scandinavian Airlines
Deal found 3/16$545
This oojo deal was found by Cheapflights users on 3/15. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/13:55 pm
SEA
-
DUB
2 stops34h 30m
Scandinavian Airlines
Thu 9/1012:40 pm
DUB
-
SEA
1 stop33h 05m
Scandinavian Airlines
Deal found 3/15$546
This oojo deal was found by Cheapflights users on 3/13. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/63:55 pm
SEA
-
DUB
2 stops35h 00m
Scandinavian Airlines
Mon 9/217:50 pm
DUB
-
SEA
2 stops25h 55m
Scandinavian Airlines
Deal found 3/13$550
This Kiwi.com deal was found by Cheapflights users on 3/13. 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.
Sat 4/257:00 pm
SEA
-
DUB
2 stops32h 20m
Multiple Airlines
Fri 5/11:00 pm
DUB
-
SEA
1 stop28h 40m
Multiple Airlines
Deal found 3/13$555
This Cheapflightsfares deal was found by Cheapflights users on 3/13. 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.
Fri 9/43:55 pm
SEA
-
DUB
2 stops32h 05m
Scandinavian Airlines
Sat 9/128:00 pm
DUB
-
SEA
2 stops25h 45m
Scandinavian Airlines
Deal found 3/13$556
This FlightHub deal was found by Cheapflights users on 3/15. 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 8/1912:00 pm
SEA
-
DUB
2 stops39h 50m
Scandinavian Airlines
Fri 9/412:40 pm
DUB
-
SEA
1 stop33h 05m
Scandinavian Airlines
Deal found 3/15$561
This oojo deal was found by Cheapflights users on 3/15. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/223:55 pm
SEA
-
DUB
2 stops34h 30m
Scandinavian Airlines
Sat 9/58:00 pm
DUB
-
SEA
2 stops25h 45m
Scandinavian Airlines
Deal found 3/15$562
This KAYAK deal was found by Cheapflights users on 3/12. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/213:55 pm
SEA
-
DUB
1 stop33h 30m
Scandinavian Airlines
Mon 8/3112:40 pm
DUB
-
SEA
1 stop33h 05m
Scandinavian Airlines
Deal found 3/12$565
This FlightHub deal was found by Cheapflights users on 3/14. 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.
Fri 9/113:55 pm
SEA
-
DUB
1 stop33h 30m
Scandinavian Airlines
Sat 9/1910:15 am
DUB
-
SEA
1 stop35h 30m
Scandinavian Airlines
Deal found 3/14$567
This United Airlines deal was found by Cheapflights users on 3/15. 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 4/2012:08 pm
SEA
-
SNN
1 stop14h 07m
United Airlines
Tue 5/512:30 pm
SNN
-
SEA
1 stop19h 29m
United Airlines
Deal found 3/15$593
This United Airlines deal was found by Cheapflights users on 3/14. 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.
Tue 4/285:00 am
SEA
-
SNN
2 stops21h 15m
United Airlines
Tue 5/512:30 pm
SNN
-
SEA
2 stops18h 22m
United Airlines
Deal found 3/14$612

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 March 17, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$544
(CheapOair)

One-way from

$217
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$608

Good round-trip deal

$730 or less

Good one-way deal

$360 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. 20% potential increase in price ($161 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($26 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
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 March 17, 2026.
Use the filters below to find and compare flights from Seattle to Ireland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Sun 9/6

11:56 pm-7:30 am

2 stops23h 34m

Shannon

Thu 9/17

9:30 am-3:36 pm

1 stop14h 06m

$613

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Sun 9/6

9:55 pm-11:10 am

1 stop29h 15m

Shannon

Thu 9/17

1:05 pm-10:16 pm

1 stop17h 11m

$613

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Sat 5/9

10:41 pm-10:15 am

2 stops27h 34m

Shannon

Sun 5/24

9:30 am-8:00 am

2 stops30h 30m

$692

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Sat 8/1

11:49 pm-7:30 am

2 stops23h 41m

Shannon

Sun 8/16

9:30 am-9:35 am

1 stop32h 05m

$699

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Fri 5/1

10:41 pm-10:40 am

1 stop27h 59m

Dublin

Sun 5/10

9:50 am-9:50 am

1 stop32h 00m

$703

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Fri 5/1

10:41 pm-7:20 am

1 stop24h 39m

Dublin

Sat 5/9

9:20 am-9:50 am

1 stop32h 30m

$703

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Sun 8/23

11:56 pm-10:15 am

2 stops26h 19m

Shannon

Thu 8/27

9:30 am-9:56 pm

2 stops20h 26m

$707

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Wed 5/27

2:55 pm-7:45 am

1 stop32h 50m

Dublin

Mon 6/1

9:20 am-11:57 am

2 stops34h 37m

$733

SeattleCork

SEA - ORK

SEAORK

Seattle/Tacoma Intl

Sat 9/5

1:30 pm-2:25 pm

1 stop16h 55m

Cork

Sat 9/12

3:10 pm-11:15 am

1 stop28h 05m

$740

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Wed 5/6

6:00 am-8:20 am

2 stops18h 20m

Dublin

Wed 5/13

8:55 am-8:30 pm

2 stops19h 35m

$741

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/12

Showing 1-10 of 48 resultsSorted by cheapest first
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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 $306). Flying from Seattle to Ireland in June is currently the most expensive (average of $607). 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 March 17, 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to Ireland as you normally would.

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 March 17, 2026.
Read reviews from past customers who have flown United Airlines,Aer Lingus, andAmerican Airlines 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
9,431 reviews

Food

6.6

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Overall

7.4

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,431 reviews
United Airlines
7.4
Good
9,431 reviews

Food

6.6

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Overall

7.4

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Aer Lingus
7.2
Good
1,477 reviews
United Airlines
7.4
Good
9,431 reviews

Food

6.6

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Overall

7.4

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
American Airlines
7.1
Good
11,467 reviews
United Airlines
7.4
Good
9,431 reviews

Food

6.6

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Overall

7.4

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Icelandair
7.1
Good
622 reviews
United Airlines
7.4
Good
9,431 reviews

Food

6.6

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Overall

7.4

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
British Airways
6.7
Okay
7,797 reviews
United Airlines
7.4
Good
9,431 reviews

Food

6.6

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Overall

7.4

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

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 11 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 14h 07m. Fly via United Airlines, Delta, or KLM to get the fastest option. Airlines will cover a distance of 4485 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 $174. WestJet flights start at $212 while deals on British Airways start at $218 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 - Shannon and Seattle/Tacoma Intl - Cork.

  • 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 (88%), Aer Lingus (88%) or Iberia (88%) 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 $1,645, our data indicates the cheapest price to be $288. The most popular route (Seattle/Tacoma Intl - Dublin), is priced around $486.

  • 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 $306). Flying from Seattle to Ireland in June is currently the most expensive (average of $607). 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

Browse thousands of different options on Cheapflights for your next trip

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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 March 17, 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$101Average$621FlexibilityNo cancel feeOn-time62%
Air CanadaCheapest$341Average$585FlexibilityNo cancel feeOn-time67%
IcelandairCheapest$348Average$510FlexibilityNo cancel feeOn-time76%
IberiaCheapest$367Average$596FlexibilityNo cancel feeOn-time77%
Aer LingusCheapest$397Average$671FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$405Average$634FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$407Average$749FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$407Average$822FlexibilityNo cancel feeOn-time70%
Scandinavian AirlinesCheapest$444Average$503FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$456Average$629FlexibilityNo cancel feeOn-time76%

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