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$252+ 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 10/18. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — DUB
may. 4 — may. 111
dom. 5/4
dom. 5/11
1 adult, Economy
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Cheap flight deals from Seattle to Ireland

Keep the following information in mind while searching for Seattle to Ireland flight deals. Data was last updated abril 29, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$601
(CheapOair)

One-way from

$252
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$711

Good round-trip deal

$752 or less

Good one-way deal

$529 or less
Provider with most accurate pricing for Seattle/Tacoma Intl-Dublin flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Dublin flights.
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From Seattle/Tacoma Intl to Ireland
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One-way flight from Seattle/Tacoma Intl to Ireland
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Highest demand for flights based on searches. 23% potential increase in price ($210 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($31 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Price to beat on a round-trip flight from Seattle/Tacoma Intl to Ireland.
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Price to beat on a one-way flight from Seattle/Tacoma Intl to Ireland.
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Find 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 abril 29, 2025.

This Icelandair deal was found by Cheapflights users on 4/29. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 8/2111:30 pmSEA - DUB
1 stop29h 45mIcelandair
mar. 8/262:15 pmDUB - SEA
1 stop29h 10mIcelandair
Deal found 4/29$604
This Air Canada deal was found by Cheapflights users on 4/29. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 8/147:00 amSEA - DUB
2 stops16h 45mMultiple Airlines
jue. 8/219:20 amDUB - SEA
2 stops17h 16mMultiple Airlines
Deal found 4/29$605
This United Airlines deal was found by Cheapflights users on 4/29. 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.
mié. 8/207:05 amSEA - DUB
3 stops19h 15mUnited Airlines
jue. 8/289:20 amDUB - SEA
1 stop19h 21mUnited Airlines
Deal found 4/29$606
This United Airlines deal was found by Cheapflights users on 4/28. 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.
mar. 8/197:00 amSEA - SNN
2 stops19h 15mUnited Airlines
dom. 8/249:30 amSNN - SEA
1 stop14h 02mUnited Airlines
Deal found 4/28$606
This Air Canada deal was found by Cheapflights users on 4/29. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 8/15:35 amSEA - DUB
2 stops18h 10mAir Canada
vie. 8/229:50 amDUB - SEA
2 stops18h 51mAir Canada
Deal found 4/29$607
This Expedia deal was found by Cheapflights users on 4/28. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 10/269:00 pmSEA - DUB
Nonstop9h 10mAer Lingus
dom. 11/24:30 pmDUB - SEA
Nonstop9h 45mAer Lingus
Deal found 4/28$609
This CrystalTravel deal was found by Cheapflights users on 4/29. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/110:00 amSEA - DUB
1 stop13h 45mLufthansa
lun. 9/295:40 pmDUB - SEA
1 stop26h 15mLufthansa
Deal found 4/29$611
This Scandinavian Airlines deal was found by Cheapflights users on 4/29. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 8/224:00 pmSEA - DUB
1 stop33h 25mScandinavian Airlines
lun. 9/17:05 pmDUB - SEA
2 stops34h 32mScandinavian Airlines
Deal found 4/29$615
This Air France deal was found by Cheapflights users on 4/29. 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.
mar. 12/167:20 amSEA - DUB
1 stop18h 00mAir France
mar. 1/1310:45 amDUB - SEA
1 stop16h 45mAir France
Deal found 4/29$619
This Delta deal was found by Cheapflights users on 4/29. 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.
dom. 9/712:40 amSEA - DUB
1 stop23h 15mDelta
mié. 9/1710:00 amDUB - SEA
1 stop14h 19mDelta
Deal found 4/29$628
This JetBlue deal was found by Cheapflights users on 4/29. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 5/1311:38 amSEA - DUB
1 stop13h 22mJetBlue
mar. 5/2711:30 amDUB - SEA
1 stop17h 24mJetBlue
Deal found 4/29$677
This Delta deal was found by Cheapflights users on 4/28. 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.
lun. 5/267:16 amSEA - SNN
1 stop19h 54mDelta
lun. 6/21:05 pmSNN - SEA
1 stop17h 38mDelta
Deal found 4/28$696

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 abril 29, 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

jue. 8/21

11:30 pm-1:15 pm

1 stop29h 45m

Dublin

dom. 8/31

12:15 pm-11:25 am

1 stop31h 10m

$604

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

jue. 8/14

7:00 am-7:45 am

2 stops16h 45m

Dublin

jue. 8/21

9:20 am-6:36 pm

2 stops17h 16m

$605

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

mié. 8/20

7:05 am-10:20 am

3 stops19h 15m

Dublin

jue. 8/28

9:20 am-8:41 pm

1 stop19h 21m

$606

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

mar. 8/19

7:00 am-10:15 am

2 stops19h 15m

Shannon

dom. 8/24

9:30 am-3:32 pm

1 stop14h 02m

$606

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

vie. 8/1

5:35 am-7:45 am

2 stops18h 10m

Dublin

vie. 8/22

9:50 am-8:41 pm

2 stops18h 51m

$607

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

dom. 10/26

9:00 pm-1:10 pm

Nonstop9h 10m

Dublin

dom. 11/2

4:30 pm-6:15 pm

Nonstop9h 45m

$609

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

lun. 9/1

10:00 am-7:45 am

1 stop13h 45m

Dublin

lun. 9/29

5:40 pm-11:55 am

1 stop26h 15m

$611

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

vie. 8/22

4:00 pm-9:25 am

1 stop33h 25m

Dublin

lun. 9/1

7:05 pm-9:37 pm

2 stops34h 32m

$615

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

dom. 9/7

12:40 am-7:55 am

1 stop23h 15m

Dublin

mié. 9/17

10:00 am-4:19 pm

1 stop14h 19m

$628

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

mar. 5/13

11:38 am-9:00 am

1 stop13h 22m

Dublin

mar. 5/27

11:30 am-8:54 pm

1 stop17h 24m

$677

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/28

Showing 1-10 of 49 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 $509). Flying from Seattle to Ireland in June is currently the most expensive (average of $1,006). 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 abril 29, 2025.

A simple way to save on the total cost of your ticket is to fly from Seattle to Ireland at noon. If you’re flexible enough to do this you can expect to save up to 31% on your trip compared to booking a flight in the morning.

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 September 15, 2024.

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

Weekly flight availability from Seattle to Ireland

Explore weekly flight availability from Seattle to Ireland. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated abril 29, 2025.

The most flights from SEA to IE0 are scheduled on a Monday (3 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (2 on average).

Rainfall in Ireland by month

Plan your trip to Ireland by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Ireland ranges from 1.9 - 3.1 inches per month. October is typically the wettest month, when rainfall can reach 3.1 in. February is typically the driest time to visit Ireland when rainfall is around 1.9 in.

Temperature in Ireland by month

Plan your trip to Ireland by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Ireland, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 60.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 41.0 F).

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 abril 29, 2025.
Read reviews from past customers who have flown Delta, Alaska Airlines and KLM from Seattle to Ireland. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,936 reviews

Entertainment

7.9

Overall

8.0

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,936 reviews
Delta
8.0
Very good
7,936 reviews

Entertainment

7.9

Overall

8.0

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Alaska Airlines
8.0
Very good
9,968 reviews
Delta
8.0
Very good
7,936 reviews

Entertainment

7.9

Overall

8.0

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,333 reviews
Delta
8.0
Very good
7,936 reviews

Entertainment

7.9

Overall

8.0

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
SWISS
7.5
Good
1,588 reviews
Delta
8.0
Very good
7,936 reviews

Entertainment

7.9

Overall

8.0

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,696 reviews
Delta
8.0
Very good
7,936 reviews

Entertainment

7.9

Overall

8.0

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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 16 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

    To fly one-way, consider booking your trip with WestJet, which is currently one of the cheapest options available, starting at $327. JetBlue flights start at $359 while deals on Icelandair start at $375 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 (78%), Aer Lingus (78%) or British Airways (78%) 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 $746, our data indicates the cheapest price to be $459. The most popular route (Seattle/Tacoma Intl - Dublin), is priced around $435.

  • 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 $509). Flying from Seattle to Ireland in June is currently the most expensive (average of $1,006). 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.

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Alternative routes for Seattle to Ireland

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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 abril 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$380Average$592FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$437Average$856FlexibilityNo cancel feeOn-time70%
Aer LingusCheapest$441Average$774FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$455Average$786FlexibilityNo cancel feeOn-time71%
Scandinavian AirlinesCheapest$468Average$506FlexibilityNo cancel feeOn-time77%
KLMCheapest$474Average$796FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$480Average$751FlexibilityNo cancel feeOn-time69%
DeltaCheapest$490Average$763FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$501Average$770FlexibilityNo cancel feeOn-time76%
Air CanadaCheapest$509Average$746FlexibilityNo cancel feeOn-time67%

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