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$396+ 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 9/24. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — DUB
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$471
(Aer Lingus)

One-way from

$406
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$1,018

Good round-trip deal

$566 or less

Good one-way deal

$503 or less
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. 22% potential increase in price ($201 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 June 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 June 12, 2025.

This Aer Lingus deal was found by Cheapflights users on 6/12. 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 Aer Lingus is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/129:50 pmSEA - DUB
1 stop26h 35mMultiple Airlines
Wed 8/204:10 pmDUB - SEA
Nonstop9h 40mMultiple Airlines
Deal found 6/12$471
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1211:30 pmSEA - DUB
1 stop29h 45mIcelandair
Sat 8/232:15 pmDUB - SEA
1 stop14h 25mIcelandair
Deal found 6/11$473
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/312:20 amSEA - DUB
1 stop25h 25mUnited Airlines
Wed 8/2012:30 pmDUB - SEA
2 stops40h 48mUnited Airlines
Deal found 6/11$478
This Cheapflightsfares deal was found by Cheapflights users on 6/12. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/204:00 pmSEA - DUB
1 stop18h 15mScandinavian Airlines
Sat 8/308:05 pmDUB - SEA
2 stops25h 45mScandinavian Airlines
Deal found 6/12$479
This American Airlines deal was found by Cheapflights users on 6/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/48:20 pmSEA - DUB
1 stop12h 55mAmerican Airlines
Wed 8/2011:45 amDUB - SEA
1 stop14h 56mAmerican Airlines
Deal found 6/10$480
This Kiwi.com deal was found by Cheapflights users on 6/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/117:35 pmSEA - DUB
Nonstop9h 05mAer Lingus
Wed 8/204:10 pmDUB - SEA
Nonstop9h 40mAer Lingus
Deal found 6/12$488
This Air Canada deal was found by Cheapflights users on 6/10. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/237:15 pmSEA - DUB
2 stops28h 30mAir Canada
Thu 9/259:20 amDUB - SEA
1 stop18h 11mAir Canada
Deal found 6/10$491
This Delta deal was found by Cheapflights users on 6/10. 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.
Wed 11/126:00 amSEA - DUB
1 stop17h 45mDelta
Wed 11/266:00 amDUB - SEA
2 stops22h 32mDelta
Deal found 6/10$501
This Ovago deal was found by Cheapflights users on 6/12. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/261:30 pmSEA - DUB
1 stop12h 20mBritish Airways
Fri 9/510:55 amDUB - SEA
1 stop15h 25mBritish Airways
Deal found 6/12$507
This Booking.com deal was found by Cheapflights users on 6/10. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/62:55 pmSEA - DUB
1 stop32h 50mLufthansa
Wed 10/159:20 amDUB - SEA
1 stop11h 50mLufthansa
Deal found 6/10$509
This United Airlines deal was found by Cheapflights users on 6/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/38:45 amSEA - SNN
2 stops14h 45mUnited Airlines
Fri 9/199:30 amSNN - SEA
1 stop17h 19mUnited Airlines
Deal found 6/12$516
This Iberia deal was found by Cheapflights users on 6/12. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/1610:00 amSEA - DUB
1 stop15h 45mIberia
Sun 11/22:05 pmDUB - SEA
1 stop16h 59mIberia
Deal found 6/12$588

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 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

Tue 8/12

9:50 pm-8:25 am

1 stop26h 35m

Dublin

Wed 8/20

4:10 pm-5:50 pm

Nonstop9h 40m

$471

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Tue 8/12

11:30 pm-1:15 pm

1 stop29h 45m

Dublin

Sat 8/23

2:15 pm-8:40 pm

1 stop14h 25m

$473

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sun 8/3

12:20 am-9:45 am

1 stop25h 25m

Dublin

Wed 8/20

12:30 pm-9:18 pm

2 stops40h 48m

$478

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Wed 8/20

4:00 pm-6:15 pm

1 stop18h 15m

Dublin

Sat 8/30

8:05 pm-1:50 pm

2 stops25h 45m

$479

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Mon 8/4

8:20 pm-5:15 pm

1 stop12h 55m

Dublin

Wed 8/20

11:45 am-6:41 pm

1 stop14h 56m

$480

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Mon 8/11

7:35 pm-12:40 pm

Nonstop9h 05m

Dublin

Wed 8/20

4:10 pm-5:50 pm

Nonstop9h 40m

$488

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sat 8/23

7:15 pm-7:45 am

2 stops28h 30m

Dublin

Thu 9/25

9:20 am-7:31 pm

1 stop18h 11m

$491

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Wed 11/12

6:00 am-7:45 am

1 stop17h 45m

Dublin

Wed 11/26

6:00 am-8:32 pm

2 stops22h 32m

$501

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Tue 8/26

1:30 pm-9:50 am

1 stop12h 20m

Dublin

Fri 9/5

10:55 am-6:20 pm

1 stop15h 25m

$507

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Mon 10/6

2:55 pm-7:45 am

1 stop32h 50m

Dublin

Wed 10/15

9:20 am-1:10 pm

1 stop11h 50m

$509

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

Showing 1-10 of 47 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 $947). 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 12, 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 25% 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 Wednesday 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.

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 June 12, 2025.
Read reviews from past customers who have flown Hainan Airlines, Delta and Alaska Airlines from Seattle to Ireland. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Hainan Airlines
8.1
Very good
39 reviews

Boarding

8.6

Comfort

8.1

Entertainment

7.7

Overall

8.1

Food

8.5

Crew

8.9

Reviews

1 / 2
10.0
Excellent

Anonymous,Mar 2025

CAN - PEK

Excellent services. The staff were amazing. Although if there was something that I could suggest to improve the services I’d say that snacks and drinks should be offered in between meals. Other than that then it was a lovely flight.
Hainan Airlines
8.1
Very good
39 reviews
Hainan Airlines
8.1
Very good
39 reviews

Boarding

8.6

Comfort

8.1

Entertainment

7.7

Overall

8.1

Food

8.5

Crew

8.9

Reviews

1 / 2
10.0
Excellent

Anonymous,Mar 2025

CAN - PEK

Excellent services. The staff were amazing. Although if there was something that I could suggest to improve the services I’d say that snacks and drinks should be offered in between meals. Other than that then it was a lovely flight.
Delta
8.0
Very good
7,946 reviews
Hainan Airlines
8.1
Very good
39 reviews

Boarding

8.6

Comfort

8.1

Entertainment

7.7

Overall

8.1

Food

8.5

Crew

8.9

Reviews

1 / 2
10.0
Excellent

Anonymous,Mar 2025

CAN - PEK

Excellent services. The staff were amazing. Although if there was something that I could suggest to improve the services I’d say that snacks and drinks should be offered in between meals. Other than that then it was a lovely flight.
Alaska Airlines
8.0
Very good
10,000 reviews
Hainan Airlines
8.1
Very good
39 reviews

Boarding

8.6

Comfort

8.1

Entertainment

7.7

Overall

8.1

Food

8.5

Crew

8.9

Reviews

1 / 2
10.0
Excellent

Anonymous,Mar 2025

CAN - PEK

Excellent services. The staff were amazing. Although if there was something that I could suggest to improve the services I’d say that snacks and drinks should be offered in between meals. Other than that then it was a lovely flight.
KLM
7.8
Good
1,358 reviews
Hainan Airlines
8.1
Very good
39 reviews

Boarding

8.6

Comfort

8.1

Entertainment

7.7

Overall

8.1

Food

8.5

Crew

8.9

Reviews

1 / 2
10.0
Excellent

Anonymous,Mar 2025

CAN - PEK

Excellent services. The staff were amazing. Although if there was something that I could suggest to improve the services I’d say that snacks and drinks should be offered in between meals. Other than that then it was a lovely flight.
Finnair
7.6
Good
1,290 reviews
Hainan Airlines
8.1
Very good
39 reviews

Boarding

8.6

Comfort

8.1

Entertainment

7.7

Overall

8.1

Food

8.5

Crew

8.9

Reviews

1 / 2
10.0
Excellent

Anonymous,Mar 2025

CAN - PEK

Excellent services. The staff were amazing. Although if there was something that I could suggest to improve the services I’d say that snacks and drinks should be offered in between meals. Other than that then it was a lovely flight.

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 12 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 $406. Aer Lingus flights start at $413 while deals on Air Canada start at $416 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 (68%), Aer Lingus (68%) or British Airways (68%) 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 $2,592, our data indicates the cheapest price to be $394. The most popular route (Seattle/Tacoma Intl - Dublin), is priced around $454.

  • 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 $947). 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$379Average$588FlexibilityNo cancel feeOn-time76%
IberiaCheapest$391Average$596FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$445Average$870FlexibilityNo cancel feeOn-time70%
Aer LingusCheapest$452Average$772FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$455Average$802FlexibilityNo cancel feeOn-time71%
Scandinavian AirlinesCheapest$468Average$506FlexibilityNo cancel feeOn-time77%
KLMCheapest$474Average$687FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$486Average$743FlexibilityNo cancel feeOn-time69%
DeltaCheapest$490Average$745FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$496Average$741FlexibilityNo cancel feeOn-time76%

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