HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ireland

$220+ 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 10/7. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — DUB
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Seattle to Ireland with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 September 11, 2025.

Round-trip from

$404
(lastminute.com)

One-way from

$220
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$642

Good round-trip deal

$534 or less

Good one-way deal

$448 or less
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. 22% potential increase in price ($195 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($30 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
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

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 September 11, 2025.

This Icelandair deal was found by Cheapflights users on 9/11. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/12:35 pmSEA - DUB
1 stop11h 40mIcelandair
Thu 12/1111:30 amDUB - SEA
1 stop13h 30mIcelandair
Deal found 9/11$404
This lastminute.com deal was found by Cheapflights users on 9/9. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/202:55 pmSEA - DUB
1 stop32h 50mMultiple Airlines
Wed 11/56:35 pmDUB - SEA
2 stops36h 10mMultiple Airlines
Deal found 9/9$405
This United Airlines deal was found by Cheapflights users on 9/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/117:00 amSEA - DUB
1 stop17h 10mUnited Airlines
Wed 11/199:00 amDUB - SEA
2 stops23h 59mUnited Airlines
Deal found 9/10$407
This Air Canada deal was found by Cheapflights users on 9/10. 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.
Sun 10/268:15 amSEA - DUB
1 stop14h 55mAir Canada
Wed 11/129:00 amDUB - SEA
1 stop21h 16mAir Canada
Deal found 9/10$409
This Air Canada deal was found by Cheapflights users on 9/10. 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.
Mon 11/38:00 pmSEA - DUB
2 stops27h 10mAir Canada
Wed 11/199:00 amDUB - SEA
1 stop21h 16mAir Canada
Deal found 9/10$410
This oojo deal was found by Cheapflights users on 9/11. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/297:00 pmSEA - DUB
1 stop32h 05mIcelandair
Fri 10/1012:15 pmDUB - SEA
1 stop16h 25mIcelandair
Deal found 9/11$411
This United Airlines deal was found by Cheapflights users on 9/11. 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.
Wed 11/199:04 amSEA - DUB
2 stops16h 51mUnited Airlines
Wed 11/269:00 amDUB - SEA
2 stops23h 59mUnited Airlines
Deal found 9/11$412
This Delta deal was found by Cheapflights users on 9/11. 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.
Mon 10/207:19 amSEA - DUB
1 stop17h 56mDelta
Wed 11/510:45 amDUB - SEA
2 stops31h 48mDelta
Deal found 9/11$413
This Kiwi.com deal was found by Cheapflights users on 9/11. 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 Kiwi.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
Fri 10/179:20 amDUB - SEA
1 stop12h 56mLufthansa
Deal found 9/11$414
This Kiwi.com deal was found by Cheapflights users on 9/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/22:35 pmSEA - DUB
1 stop11h 40mIcelandair
Mon 12/811:30 amDUB - SEA
1 stop13h 30mIcelandair
Deal found 9/11$416
This Cheapflightsfares deal was found by Cheapflights users on 9/9. 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.
Thu 10/304:30 pmSEA - SNN
2 stops17h 15mMultiple Airlines
Wed 11/122:45 pmSNN - SEA
1 stop15h 06mMultiple Airlines
Deal found 9/9$686
This Mytrip deal was found by Cheapflights users on 9/9. 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.
Mon 9/227:00 pmSEA - ORK
3 stops20h 45mMultiple Airlines
Thu 9/258:30 pmORK - SEA
3 stops32h 10mMultiple Airlines
Deal found 9/9$841

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 September 11, 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 12/7

2:35 pm-10:15 am

1 stop11h 40m

Dublin

Thu 12/11

11:30 am-5:00 pm

1 stop13h 30m

$404

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Wed 2/25

8:45 am-7:45 am

1 stop15h 00m

Dublin

Fri 3/6

10:45 am-10:16 pm

1 stop19h 31m

$422

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Mon 1/26

10:58 am-8:10 am

1 stop13h 12m

Dublin

Wed 2/11

10:40 am-10:43 pm

1 stop20h 03m

$422

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Wed 11/12

7:20 am-8:45 am

1 stop17h 25m

Dublin

Wed 11/26

11:30 am-10:25 pm

1 stop18h 55m

$422

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Wed 1/28

10:58 am-8:10 am

1 stop13h 12m

Dublin

Wed 2/11

10:40 am-10:43 pm

1 stop20h 03m

$422

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Mon 1/26

10:58 am-8:10 am

1 stop13h 12m

Dublin

Thu 2/5

10:40 am-10:43 pm

1 stop20h 03m

$422

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sat 1/24

2:10 pm-8:10 am

1 stop34h 00m

Dublin

Tue 2/10

10:40 am-10:43 pm

1 stop20h 03m

$429

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Mon 10/27

8:00 am-10:20 am

1 stop19h 20m

Dublin

Wed 11/12

9:00 am-10:16 pm

1 stop21h 16m

$438

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Mon 12/8

9:59 pm-7:50 am

2 stops25h 51m

Dublin

Fri 4/17

10:00 am-8:24 pm

1 stop18h 24m

$446

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sun 2/1

9:30 am-3:45 pm

2 stops22h 15m

Dublin

Thu 4/30

1:15 pm-10:16 pm

1 stop17h 01m

$446

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 27 results
1
2
3

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 September 11, 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 28% 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. 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 September 11, 2025.
Read reviews from past customers who have flown United Airlines, American Airlines, and Aer Lingus 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
8,937 reviews

Boarding

7.7

Overall

7.4

Entertainment

7.1

Food

6.6

Crew

8.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
8,937 reviews
United Airlines
7.4
Good
8,937 reviews

Boarding

7.7

Overall

7.4

Entertainment

7.1

Food

6.6

Crew

8.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
American Airlines
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,937 reviews

Boarding

7.7

Overall

7.4

Entertainment

7.1

Food

6.6

Crew

8.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Aer Lingus
7.2
Good
1,271 reviews
United Airlines
7.4
Good
8,937 reviews

Boarding

7.7

Overall

7.4

Entertainment

7.1

Food

6.6

Crew

8.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Icelandair
7.0
Good
546 reviews
United Airlines
7.4
Good
8,937 reviews

Boarding

7.7

Overall

7.4

Entertainment

7.1

Food

6.6

Crew

8.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
British Airways
6.7
Okay
7,361 reviews
United Airlines
7.4
Good
8,937 reviews

Boarding

7.7

Overall

7.4

Entertainment

7.1

Food

6.6

Crew

8.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

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.

  • How long is the flight from Seattle to Ireland?

    There are many flights that can get you from Seattle to Ireland in 11h 40m. Fly via Icelandair, Delta, or United Airlines to get the fastest option. Airlines will cover a distance of 4523 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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 (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 $1,598, our data indicates the cheapest price to be $373. The most popular route (Seattle/Tacoma Intl - Dublin), is priced around $356.

  • 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

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.

Alternative routes for Seattle to Ireland

See prices for flight routes from nearby airports that may be better suited for you.
Seattle to Heathrow flights
Seattle to Charles de Gaulle flights
Seattle to Istanbul flights
Seattle to Dublin flights
Seattle to Gatwick flights
Seattle to London City flights
Seattle to Frankfurt flights
Seattle to Leonardo da Vinci/Fiumicino flights
Seattle to Amsterdam flights
Seattle to Orly flights
Portland to Heathrow flights
Seattle to Athens flights
Seattle to Barcelona-El Prat flights
Seattle to Lisbon flights
Seattle to Keflavik Intl flights
Seattle to Madrid flights
Seattle to Sabiha Gokcen flights
Seattle to Oslo Gardermoen flights
Seattle to Luton flights
Seattle to Stansted flights
Portland to Charles de Gaulle flights
Seattle to Copenhagen flights
Seattle to Malpensa flights
Portland to Dublin flights
Portland to Amsterdam flights
Seattle to Zurich flights
Seattle to Munich flights
Portland to Gatwick flights
Seattle to Florence flights
Seattle to Linate flights
Seattle to Berlin flights
Portland to Orly flights
Seattle to Arlanda flights
Seattle to Bruxelles-National flights
Portland to Madrid flights
Portland to Lisbon flights
Seattle to Geneva flights
Seattle to Vienna flights
Portland to London City flights
Seattle to Naples flights
Portland to Leonardo da Vinci/Fiumicino flights
Seattle to Edinburgh flights
Seattle to Basel flights
Seattle to Frederic Chopin flights
Seattle to Vicenza flights
Portland to Barcelona-El Prat flights
Seattle to Málaga flights
Seattle to Porto flights
Portland to Frankfurt flights
Seattle to Glasgow Intl flights

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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$101Average$621FlexibilityNo cancel feeOn-time62%
Air FranceCheapest$337Average$732FlexibilityNo cancel feeOn-time77%
Air CanadaCheapest$341Average$729FlexibilityNo cancel feeOn-time67%
IberiaCheapest$363Average$524FlexibilityNo cancel feeOn-time77%
IcelandairCheapest$373Average$578FlexibilityNo cancel feeOn-time76%
DeltaCheapest$404Average$774FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$405Average$706FlexibilityNo cancel feeOn-time75%
Aer LingusCheapest$419Average$757FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$432Average$747FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$450Average$850FlexibilityNo cancel feeOn-time70%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.