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Ireland

$189+ 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 8/29. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — DUB
Jul 16 — Jul 231
Thu 7/16
Thu 7/23
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 June 16, 2026.

This United Airlines deal was found by Cheapflights users on 6/15. 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.
Fri 10/211:13 pm
SEA
-
SNN
2 stops51h 02m
United Airlines
Wed 10/712:30 pm
SNN
-
SEA
2 stops32h 18m
United Airlines
Deal found 6/15$786
This United Airlines deal was found by Cheapflights users on 6/15. 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 8/310:52 am
SEA
-
SNN
1 stop12h 38m
United Airlines
Wed 8/199:30 am
SNN
-
SEA
3 stops21h 56m
United Airlines
Deal found 6/15$805
This Delta deal was found by Cheapflights users on 6/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/271:30 pm
SEA
-
ORK
1 stop17h 10m
Delta
Wed 10/146:15 am
ORK
-
SEA
1 stop13h 37m
Delta
Deal found 6/11$808
This Air France deal was found by Cheapflights users on 6/15. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/47:15 am
SEA
-
SNN
1 stop19h 55m
Air France
Tue 8/251:05 pm
SNN
-
SEA
1 stop18h 15m
Air France
Deal found 6/15$813
This United Airlines deal was found by Cheapflights users on 6/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1210:41 am
SEA
-
SNN
1 stop12h 49m
United Airlines
Thu 8/279:30 am
SNN
-
SEA
2 stops19h 45m
United Airlines
Deal found 6/13$818
This Delta deal was found by Cheapflights users on 6/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/410:40 pm
SEA
-
SNN
1 stop28h 30m
Delta
Tue 8/251:05 pm
SNN
-
SEA
1 stop15h 15m
Delta
Deal found 6/13$821
This Delta deal was found by Cheapflights users on 6/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/1411:59 pm
SEA
-
SNN
2 stops51h 11m
Delta
Fri 8/281:05 pm
SNN
-
SEA
2 stops17h 00m
Delta
Deal found 6/13$830
This United Airlines deal was found by Cheapflights users on 6/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/147:30 am
SEA
-
SNN
1 stop18h 45m
United Airlines
Tue 7/289:30 am
SNN
-
SEA
1 stop21h 26m
United Airlines
Deal found 6/16$847
This United Airlines deal was found by Cheapflights users on 6/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/157:00 am
SEA
-
SNN
2 stops16h 30m
United Airlines
Wed 7/299:30 am
SNN
-
SEA
2 stops19h 40m
United Airlines
Deal found 6/16$852
This United Airlines deal was found by Cheapflights users on 6/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/185:15 pm
SEA
-
SNN
1 stop30h 15m
United Airlines
Wed 7/299:30 am
SNN
-
SEA
1 stop21h 46m
United Airlines
Deal found 6/16$853
This Delta deal was found by Cheapflights users on 6/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/1810:40 pm
SEA
-
SNN
1 stop28h 30m
Delta
Tue 7/281:05 pm
SNN
-
SEA
2 stops27h 18m
Delta
Deal found 6/16$858
This KLM deal was found by Cheapflights users on 6/11. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/115:45 pm
SEA
-
ORK
1 stop20h 50m
KLM
Mon 9/2110:50 am
ORK
-
SEA
1 stop32h 57m
KLM
Deal found 6/11$862

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 June 16, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$786
(United Airlines)

One-way from

$189
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$1,046

Good round-trip deal

$1,054 or less

Good one-way deal

$533 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. 23% potential increase in price ($193 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($38 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 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 June 16, 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

Fri 10/2

11:13 pm-10:15 am

2 stops51h 02m

Shannon

Wed 10/7

12:30 pm-9:55 pm

1 stop17h 25m

$786

SeattleCork

SEA - ORK

SEAORK

Seattle/Tacoma Intl

Sun 9/27

1:30 pm-2:40 pm

1 stop17h 10m

Cork

Wed 10/14

6:15 am-11:52 am

1 stop13h 37m

$808

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Wed 8/12

5:00 am-7:30 am

2 stops18h 30m

Shannon

Thu 8/27

9:30 am-5:42 pm

2 stops16h 12m

$818

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Tue 7/21

11:02 am-10:15 am

2 stops15h 13m

Shannon

Tue 7/28

9:30 am-7:06 pm

1 stop17h 36m

$847

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Tue 7/14

11:02 am-10:15 am

2 stops15h 13m

Shannon

Tue 7/21

12:30 pm-7:56 am

2 stops27h 26m

$852

SeattleCork

SEA - ORK

SEAORK

Seattle/Tacoma Intl

Fri 9/11

5:45 pm-10:35 pm

1 stop20h 50m

Cork

Mon 9/21

10:50 am-11:47 am

1 stop32h 57m

$862

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Fri 7/17

9:46 pm-11:10 am

2 stops53h 24m

Shannon

Fri 7/31

1:05 pm-8:28 pm

1 stop15h 23m

$864

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Mon 8/3

7:00 am-7:30 am

1 stop16h 30m

Shannon

Mon 8/24

9:30 am-11:26 pm

3 stops21h 56m

$868

SeattleCork

SEA - ORK

SEAORK

Seattle/Tacoma Intl

Sun 8/2

10:40 pm-4:45 pm

2 stops34h 05m

Cork

Tue 8/18

10:50 am-11:37 am

1 stop32h 47m

$870

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Thu 7/30

10:52 am-7:30 am

1 stop12h 38m

Shannon

Thu 8/6

9:30 am-10:56 pm

1 stop21h 26m

$880

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/16

Showing 1-10 of 42 resultsSorted by cheapest first
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5

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, August is the cheapest month in which you can book a flight from Seattle to Ireland (average of $226). Flying from Seattle to Ireland in June is currently the most expensive (average of $632). 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 June 16, 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.

How far ahead should I book a flight from Seattle to Ireland?

Booking 25 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to Ireland. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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 June 16, 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
9,844 reviews

Boarding

7.7

Entertainment

7.1

Overall

7.4

Food

6.6

Comfort

7.3

Crew

8.1

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
United Airlines
7.4
Good
9,844 reviews
United Airlines
7.4
Good
9,844 reviews

Boarding

7.7

Entertainment

7.1

Overall

7.4

Food

6.6

Comfort

7.3

Crew

8.1

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
Aer Lingus
7.3
Good
1,604 reviews
United Airlines
7.4
Good
9,844 reviews

Boarding

7.7

Entertainment

7.1

Overall

7.4

Food

6.6

Comfort

7.3

Crew

8.1

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
American Airlines
7.1
Good
11,669 reviews
United Airlines
7.4
Good
9,844 reviews

Boarding

7.7

Entertainment

7.1

Overall

7.4

Food

6.6

Comfort

7.3

Crew

8.1

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
Icelandair
7.0
Good
678 reviews
United Airlines
7.4
Good
9,844 reviews

Boarding

7.7

Entertainment

7.1

Overall

7.4

Food

6.6

Comfort

7.3

Crew

8.1

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
British Airways
6.7
Okay
8,054 reviews
United Airlines
7.4
Good
9,844 reviews

Boarding

7.7

Entertainment

7.1

Overall

7.4

Food

6.6

Comfort

7.3

Crew

8.1

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.

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 9 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 17h 10m. Fly via United Airlines, Delta, or KLM to get the fastest option. Airlines will cover a distance of 4541 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. JetBlue flights start at $190 while deals on WestJet start at $212 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 (85%), Aer Lingus (85%) or Iberia (85%) 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 $860, our data indicates the cheapest price to be $452. The most popular route (Seattle/Tacoma Intl - Dublin), is priced around $569.

  • 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, August is the cheapest month in which you can book a flight from Seattle to Ireland (average of $226). Flying from Seattle to Ireland in June is currently the most expensive (average of $632). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 June 16, 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$101Average$961FlexibilityNo cancel feeOn-time62%
Air CanadaCheapest$341Average$570FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$341Average$738FlexibilityNo cancel feeOn-time69%
IcelandairCheapest$345Average$467FlexibilityNo cancel feeOn-time76%
IberiaCheapest$367Average$763FlexibilityNo cancel feeOn-time77%
Aer LingusCheapest$388Average$674FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$395Average$549FlexibilityNo cancel feeOn-time70%
DeltaCheapest$404Average$700FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$405Average$634FlexibilityNo cancel feeOn-time75%
Scandinavian AirlinesCheapest$444Average$640FlexibilityNo cancel feeOn-time77%

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