HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Dublin

$243+ Cheap flights from Seattle (SEA) to Dublin (DUB)

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 10/5. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — DUB
Sep 1 — Sep 81
Tue 9/1
Tue 9/8
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Seattle to Dublin 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.
Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Dublin are usually found in February or January, booked 29 days in advance, depart on a Wednesday or Sunday and return on a Friday

Cheap flight deals from Seattle to Dublin

Cheapest flights from Seattle to Dublin
Explore the most affordable flight options available from Seattle to Dublin. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 2, 2026.

This Cheapflightsfares deal was found by Cheapflights users on 7/30. 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.
Tue 9/13:40 pm
SEA
-
DUB
1 stop11h 25m
Icelandair
Thu 9/102:15 pm
DUB
-
SEA
1 stop11h 40m
Icelandair
Deal found 7/30$717
This Mytrip deal was found by Cheapflights users on 7/30. 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.
Thu 8/273:40 pm
SEA
-
DUB
3 stops32h 40m
Multiple Airlines
Thu 9/35:55 am
DUB
-
SEA
3 stops22h 45m
Multiple Airlines
Deal found 7/30$718
This Mytrip deal was found by Cheapflights users on 7/31. 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 8/318:00 am
SEA
-
DUB
3 stops26h 20m
Multiple Airlines
Mon 9/76:55 pm
DUB
-
SEA
2 stops30h 04m
Multiple Airlines
Deal found 7/31$719
This Cheapflightsfares deal was found by Cheapflights users on 7/31. 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.
Fri 10/163:40 pm
SEA
-
DUB
1 stop13h 35m
Icelandair
Mon 10/192:15 pm
DUB
-
SEA
1 stop11h 40m
Icelandair
Deal found 7/31$720
This Kiwi.com deal was found by Cheapflights users on 7/31. 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.
Thu 8/2011:25 pm
SEA
-
DUB
1 stop29h 50m
Icelandair
Wed 8/2612:15 pm
DUB
-
SEA
1 stop13h 40m
Icelandair
Deal found 7/31$722
This Icelandair deal was found by Cheapflights users on 7/31. 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.
Thu 8/2011:25 pm
SEA
-
DUB
1 stop29h 50m
Icelandair
Fri 8/2812:15 pm
DUB
-
SEA
1 stop16h 25m
Icelandair
Deal found 7/31$723
This Kiwi.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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/77:00 pm
SEA
-
DUB
2 stops28h 15m
Multiple Airlines
Tue 10/131:00 pm
DUB
-
SEA
1 stop13h 45m
Multiple Airlines
Deal found 7/28$724
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/177:00 pm
SEA
-
DUB
3 stops29h 20m
Multiple Airlines
Tue 8/257:05 pm
DUB
-
SEA
3 stops33h 35m
Multiple Airlines
Deal found 7/29$725
This oojo deal was found by Cheapflights users on 7/31. 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.
Tue 9/13:40 pm
SEA
-
DUB
1 stop11h 25m
Icelandair
Tue 9/82:15 pm
DUB
-
SEA
1 stop29h 30m
Icelandair
Deal found 7/31$726
This deal was found by Cheapflights users on 7/31. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/23:40 pm
SEA
-
DUB
1 stop13h 35m
Icelandair
Sun 10/412:15 pm
DUB
-
SEA
1 stop16h 25m
Icelandair
Deal found 7/31$727
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/127:10 pm
SEA
-
DUB
Nonstop9h 05m
Multiple Airlines
Sun 9/209:30 am
DUB
-
SEA
1 stop32h 21m
Multiple Airlines
Deal found 7/28$730
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/183:40 pm
SEA
-
DUB
1 stop13h 35m
Icelandair
Fri 9/2512:15 pm
DUB
-
SEA
1 stop16h 25m
Icelandair
Deal found 7/28$731

Find flight deals from Seattle to Dublin

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Dublin (DUB). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated August 2, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$715
(Cheapflightsfares)

One-way from

$243
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$778

Good round-trip deal

$921 or less

Good one-way deal

$469 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 Dublin
Search Deals
One-way flight from Seattle/Tacoma Intl to Dublin
Search Deals
Highest demand for flights based on searches. 19% potential increase in price ($172 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 August 2026
Search Deals
Price to beat on a round-trip flight from Seattle/Tacoma Intl to Dublin.
Search Deals
Price to beat on a one-way flight from Seattle/Tacoma Intl to Dublin.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Dublin 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 August 2, 2026.
Use the filters below to find and compare flights from Seattle to Dublin that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sun 9/20

9:40 pm-9:00 am

1 stop27h 20m

Dublin

Tue 10/6

10:40 am-10:31 pm

1 stop19h 51m

$751

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Tue 10/20

7:15 pm-9:35 am

1 stop30h 20m

Dublin

Thu 10/29

6:10 am-6:10 pm

1 stop19h 00m

$841

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Wed 8/19

7:15 pm-9:40 am

1 stop30h 25m

Dublin

Fri 9/11

5:10 pm-10:40 am

1 stop25h 30m

$913
Quickest round-trip

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Mon 9/21

3:40 pm-1:15 pm

1 stop13h 35m

Dublin

Wed 9/30

12:15 pm-10:39 pm

2 stops18h 24m

$932

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Fri 8/28

3:55 pm-8:00 am

2 stops32h 05m

Dublin

Fri 9/11

7:05 pm-1:45 pm

1 stop26h 40m

$936

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Thu 11/12

8:30 am-9:55 am

2 stops17h 25m

Dublin

Sun 11/15

9:00 am-3:32 pm

2 stops38h 32m

$948

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sun 8/23

10:41 am-9:45 am

1 stop15h 04m

Dublin

Tue 9/1

9:50 am-4:07 pm

2 stops38h 17m

$982

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sat 8/22

12:10 pm-9:45 am

2 stops37h 35m

Dublin

Wed 9/2

9:50 am-10:05 am

1 stop32h 15m

$985

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Wed 10/7

8:30 am-11:10 am

2 stops18h 40m

Dublin

Sun 10/11

9:50 am-9:52 am

1 stop32h 02m

$1,017
Cheapest one-way

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Tue 10/13

7:00 pm-11:25 pm

3 stops20h 25m

$267

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 15 resultsSorted by cheapest first
1
2

Compare providers for flights from Seattle to Dublin

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Dublin in August.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
MytripPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy2 starsTrust Score*3 stars
Kiwi.comPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Seattle-Dublin flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Dublin flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Dublin flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Dublin flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Dublin flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Seattle to Dublin

Have a flexible travel schedule? Discover the best time to fly to Dublin 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 Dublin

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

To ensure you get the cheapest price possible for a flight from Seattle to Dublin, you should look to book at least 90 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Seattle to Dublin?

Currently, February is the cheapest month in which you can book a flight from Seattle to Dublin (average of $464). Flying from Seattle to Dublin in June is currently the most expensive (average of $1,025). 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 DUB?

Find hourly flight availability from Seattle to Dublin. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 2, 2026.

When flying from Seattle to Dublin, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost to fly round-trip from Seattle to Dublin?

Airfare is typical for this route at the moment.

Seattle to Dublin flights typically cost between $582 and $1,005 in January.
The cheapest round-trip price found within the last 5 days was $715 on Icelandair (Jan 21-Jan 25).

Reviews of airlines servicing Dublin

Get insights into the airlines that provide service to Dublin. 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 Dublin. Reviews last updated August 2, 2026.
Read through reviews of airlines operating flights from Seattle to Dublin, such as Delta,Aer Lingus, andAmerican Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.8
Good
8,497 reviews

Entertainment

7.8

Food

7.2

Boarding

8.1

Comfort

7.8

Crew

8.5

Overall

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
Delta
7.8
Good
8,497 reviews
Delta
7.8
Good
8,497 reviews

Entertainment

7.8

Food

7.2

Boarding

8.1

Comfort

7.8

Crew

8.5

Overall

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
Aer Lingus
7.3
Good
1,684 reviews
Delta
7.8
Good
8,497 reviews

Entertainment

7.8

Food

7.2

Boarding

8.1

Comfort

7.8

Crew

8.5

Overall

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
American Airlines
7.1
Good
11,845 reviews
Delta
7.8
Good
8,497 reviews

Entertainment

7.8

Food

7.2

Boarding

8.1

Comfort

7.8

Crew

8.5

Overall

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
Icelandair
7.0
Good
716 reviews
Delta
7.8
Good
8,497 reviews

Entertainment

7.8

Food

7.2

Boarding

8.1

Comfort

7.8

Crew

8.5

Overall

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
British Airways
6.7
Okay
8,136 reviews
Delta
7.8
Good
8,497 reviews

Entertainment

7.8

Food

7.2

Boarding

8.1

Comfort

7.8

Crew

8.5

Overall

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional

Related info for your journey

Find useful and relevant information for your journey from Seattle to Dublin. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airports do I use to fly from Seattle to Dublin?

    If you book a flight from Seattle to Dublin, you will be flying from Seattle/Tacoma Intl to Dublin. Flights to Dublin (DUB) from Seattle/Tacoma Intl (SEA) take 9h 05m for a nonstop flight. There are 3 flights from Seattle/Tacoma Intl to Dublin per day from 13 airlines.

  • How popular is this Seattle to Dublin flight route?

    Within the past month, 8 users have taken a look at flights from Seattle/Tacoma Intl to Dublin.

  • How long is the flight from Seattle to Dublin?

    For as low as $751, JetBlue can have you in Dublin from Seattle in 27h 20m. The distance from Seattle to Dublin is about 4523 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Seattle to Dublin round-trip?

    Cheapflights users have booked flights from Seattle to Dublin round-trip from $161. Other airlines that can offer you cheap pricing are Air Canada, from $341, and Icelandair, from $348. You may be able to fly from Seattle to Dublin for 76% less than the average price by searching for these airlines.

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

    For one-way options, check prices for Icelandair. According to our data, you can fly for as low as $169. Users have also found prices from $212 and $316 on WestJet and Aer Lingus, respectively.

  • What are the most reliable airlines from Seattle to Dublin?

    No one likes to see their flight delayed. When booking a flight from Seattle to Dublin consider choosing American Airlines (78%), Aer Lingus (78%) or Iberia (78%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Seattle to Dublin?

    Looking at all options, your cheapest flight can be booked for $427. While the most popular route (Seattle/Tacoma Intl - Dublin) can be booked for $569 on average, our data indicates $3,259 when flying from Seattle to Dublin.

  • Where are the most common layover locations when flying from Seattle to Dublin?

    The most popular layover on flights from Seattle to Dublin is Reykjavik.

  • What are some popular things to do or see while on a layover in Reykjavik?

    Hallgrímskirkja, Harpa, and Laugardalslaug Geothermal Pool are the most popular attractions in Reykjavik if you're in need of something to do during your layover. Hallgrímskirkja, Harpa, and Laugardalslaug Geothermal Pool can be accessed by traveling approximately 23.2 mi, 23.3 mi, and 24.6 mi, respectively from Reykjavik Keflavik Intl. Travelers can rent a car at Reykjavik Keflavik Intl for an average daily rate of $75 to make sightseeing during their layover a little easier.

  • Where are the least popular layover locations for Seattle to Dublin flights?

    Of the flights from Seattle to Dublin that have layovers, the fewest flights stop in London.

  • Can I find deals for flights from Seattle to Dublin that include hotel bookings?

    Yes. In addition to deals on Seattle to Dublin flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Dublin?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Dublin.

  • Can I find deals for business class flights from Seattle to Dublin?

    Yes. Cheapflights offers flight deals from Seattle to Dublin 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 Dublin?

    Currently, February is the cheapest month in which you can book a flight from Seattle to Dublin (average of $464). Flying from Seattle to Dublin in June is currently the most expensive (average of $1,025). 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

Traveling to a place near Dublin?

Book flights to Dublin if you plan to visit one of these locations
Castleknock

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 Dublin

See prices for flight routes from nearby airports that may be better suited for you.
Portland to Dublin flights
Seattle to Shannon flights
Spokane to Dublin flights
Seattle to Cork flights

Top 10 airlines flying from Seattle to Dublin

Discover the top 10 airlines that operate flights from Seattle to Dublin. 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 August 2, 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$161Average$961FlexibilityNo cancel feeOn-time62%
Air CanadaCheapest$341Average$581FlexibilityNo cancel feeOn-time67%
IcelandairCheapest$348Average$508FlexibilityNo cancel feeOn-time76%
KLMCheapest$405Average$757FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$407Average$695FlexibilityNo cancel feeOn-time69%
Aer LingusCheapest$438Average$738FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$444Average$640FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$457Average$605FlexibilityNo cancel feeOn-time76%
IberiaCheapest$457Average$879FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$464Average$670FlexibilityNo 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.