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Ireland

$282+ 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 9/3. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — DUB
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
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 July 29, 2025.

Round-trip from

$368
(Delta)

One-way from

$282
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$828

Good round-trip deal

$464 or less

Good one-way deal

$402 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 ($197 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($29 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 29, 2025.

This Delta deal was found by Cheapflights users on 7/28. 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.
Sun 11/236:05 amSEA - DUB
2 stops18h 40mDelta
Fri 12/510:45 amDUB - SEA
2 stops21h 29mDelta
Deal found 7/28$368
This United Airlines deal was found by Cheapflights users on 7/27. 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 10/2611:59 pmSEA - DUB
1 stop25h 11mUnited Airlines
Tue 11/410:40 amDUB - SEA
1 stop16h 12mUnited Airlines
Deal found 7/27$369
This Booking.com deal was found by Cheapflights users on 7/28. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/207:00 pmSEA - DUB
1 stop32h 05mIcelandair
Sun 11/211:30 amDUB - SEA
1 stop13h 30mIcelandair
Deal found 7/28$370
This CheapOair deal was found by Cheapflights users on 7/27. 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.
Sat 10/252:55 pmSEA - DUB
2 stops32h 15mMultiple Airlines
Tue 11/45:00 amDUB - SEA
1 stop15h 10mMultiple Airlines
Deal found 7/27$376
This Air Canada deal was found by Cheapflights users on 7/27. 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.
Sun 10/265:50 amSEA - DUB
2 stops17h 20mAir Canada
Mon 11/39:00 amDUB - SEA
2 stops32h 31mAir Canada
Deal found 7/27$385
This Ovago deal was found by Cheapflights users on 7/29. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/267:50 pmSEA - DUB
1 stop16h 50mBritish Airways
Thu 11/68:50 amDUB - SEA
1 stop16h 05mBritish Airways
Deal found 7/29$389
This Finnair deal was found by Cheapflights users on 7/28. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/71:32 pmSEA - DUB
1 stop14h 08mFinnair
Thu 8/219:45 amDUB - SEA
1 stop14h 15mFinnair
Deal found 7/28$404
This FlightHub deal was found by Cheapflights users on 7/28. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/128:05 pmSEA - DUB
Nonstop9h 05mAer Lingus
Wed 11/264:30 pmDUB - SEA
Nonstop9h 50mAer Lingus
Deal found 7/28$409
This Iberia deal was found by Cheapflights users on 7/28. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/11:33 amSEA - DUB
1 stop22h 37mIberia
Mon 11/1012:55 pmDUB - SEA
1 stop16h 23mIberia
Deal found 7/28$417
This Air France deal was found by Cheapflights users on 7/28. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/117:18 amSEA - SNN
1 stop19h 52mAir France
Thu 8/211:05 pmSNN - SEA
1 stop15h 09mAir France
Deal found 7/28$487
This American Airlines deal was found by Cheapflights users on 7/27. 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.
Wed 9/101:30 pmSEA - ORK
1 stop22h 20mAmerican Airlines
Wed 9/1711:45 amORK - SEA
1 stop31h 50mAmerican Airlines
Deal found 7/27$491
This United Airlines deal was found by Cheapflights users on 7/28. 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.
Mon 8/116:45 amSEA - SNN
2 stops19h 30mUnited Airlines
Thu 8/219:30 amSNN - SEA
1 stop14h 02mUnited Airlines
Deal found 7/28$492

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 July 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

Sun 11/23

11:15 am-8:45 am

1 stop13h 30m

Dublin

Fri 12/5

10:45 am-12:14 am

2 stops21h 29m

$368

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Mon 10/20

7:00 pm-11:05 am

1 stop32h 05m

Dublin

Sun 11/2

11:30 am-5:00 pm

1 stop13h 30m

$370

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Wed 11/26

5:05 am-10:20 am

2 stops21h 15m

Dublin

Wed 12/24

9:00 am-4:52 pm

2 stops39h 52m

$375

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sat 10/25

2:55 pm-7:10 am

2 stops32h 15m

Dublin

Tue 11/4

5:00 am-12:10 pm

1 stop15h 10m

$376

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sun 10/26

5:50 am-6:10 am

2 stops17h 20m

Dublin

Mon 11/3

9:00 am-9:31 am

2 stops32h 31m

$385

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sun 10/26

7:50 pm-7:40 pm

1 stop16h 50m

Dublin

Thu 11/6

8:50 am-4:55 pm

1 stop16h 05m

$389

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Thu 8/14

1:32 pm-11:40 am

1 stop14h 08m

Dublin

Thu 8/21

9:45 am-4:00 pm

1 stop14h 15m

$404

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Wed 11/12

8:05 pm-1:10 pm

Nonstop9h 05m

Dublin

Wed 11/26

4:30 pm-6:20 pm

Nonstop9h 50m

$409

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sat 11/1

1:33 am-7:10 am

1 stop22h 37m

Dublin

Mon 11/10

12:55 pm-9:18 pm

1 stop16h 23m

$417

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Mon 8/11

7:18 am-11:10 am

1 stop19h 52m

Shannon

Thu 8/21

1:05 pm-8:14 pm

1 stop15h 09m

$487

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 38 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 $924). 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 July 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 27% 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 Sunday evenings when fares are most often at their lowest. Saturday 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 July 29, 2025.
Read reviews from past customers who have flown Delta, KLM, and Finnair 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.
Delta
8.0
Very good
7,977 reviews

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,977 reviews
Delta
8.0
Very good
7,977 reviews

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,383 reviews
Delta
8.0
Very good
7,977 reviews

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Finnair
7.6
Good
1,316 reviews
Delta
8.0
Very good
7,977 reviews

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air France
7.5
Good
1,465 reviews
Delta
8.0
Very good
7,977 reviews

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
SWISS
7.5
Good
1,683 reviews
Delta
8.0
Very good
7,977 reviews

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection 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 15 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 Air Canada, which is currently one of the cheapest options available, starting at $351. Icelandair flights start at $361 while deals on American Airlines start at $362 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 (73%), Aer Lingus (73%) or British Airways (73%) 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 $1,577, our data indicates the cheapest price to be $344. The most popular route (Seattle/Tacoma Intl - Dublin), is priced around $329.

  • 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 $924). 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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Alternative routes for Seattle to Ireland

See prices for flight routes from nearby airports that may be better suited for you.
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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 July 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$101Average$722FlexibilityNo cancel feeOn-time62%
Air FranceCheapest$337Average$732FlexibilityNo cancel feeOn-time77%
Air CanadaCheapest$350Average$698FlexibilityNo cancel feeOn-time67%
IberiaCheapest$363Average$596FlexibilityNo cancel feeOn-time77%
IcelandairCheapest$378Average$577FlexibilityNo cancel feeOn-time76%
DeltaCheapest$399Average$770FlexibilityNo cancel feeOn-timeN/A
Aer LingusCheapest$427Average$763FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$449Average$863FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$454Average$746FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$455Average$823FlexibilityNo cancel feeOn-time71%

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