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$396+ 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 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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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Dublin are usually found in January or November, booked 59 days in advance, depart on a Wednesday or Monday and return on a Sunday

Cheap 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 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 Dublin
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One-way flight from Seattle/Tacoma Intl to Dublin
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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 Dublin.
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Price to beat on a one-way flight from Seattle/Tacoma Intl to Dublin.
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Find 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 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 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
This KLM 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/132:10 pmSEA - DUB
1 stop14h 25mKLM
Sun 8/245:20 pmDUB - SEA
1 stop26h 15mKLM
Deal found 6/10$599

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 June 12, 2025.
Use the filters below to find and compare flights from Seattle to Dublin that are best for you.

Fly from

Seattle

Fly to

Dublin

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 28 results
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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?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Dublin. Price data was last updated on June 9, 2025.

To ensure you get the cheapest price possible for a flight from Seattle to Dublin, you should look to book at least 59 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, November is the cheapest month in which you can book a flight from Seattle to Dublin (average of $509). Flying from Seattle to Dublin 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 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 June 12, 2025.

It’s typically best to fly out from Seattle to Dublin at noon. Doing so could potentially save you 30% on the flight price compared to flying in the afternoon, which is usually more expensive.

What is the cheapest day to fly from Seattle to Dublin?

Use this chart to determine the cheapest time to fly round-trip from Seattle to Dublin. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Seattle to Dublin flight should consider departing on Saturday at noon 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 Dublin by month

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

In terms of precipitation, rainfall in Dublin 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 Dublin when rainfall is around 1.9 in.

Temperature in Dublin by month

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

If weather is an important factor for your trip to Dublin, 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 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 June 12, 2025.
To help decide which airline to fly from Seattle to Dublin, see what other customers have to say about Hainan Airlines, Delta and Alaska Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Hainan Airlines
8.1
Very good
39 reviews

Food

8.5

Crew

8.9

Comfort

8.1

Entertainment

7.7

Overall

8.1

Boarding

8.6

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

Food

8.5

Crew

8.9

Comfort

8.1

Entertainment

7.7

Overall

8.1

Boarding

8.6

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

Food

8.5

Crew

8.9

Comfort

8.1

Entertainment

7.7

Overall

8.1

Boarding

8.6

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

Food

8.5

Crew

8.9

Comfort

8.1

Entertainment

7.7

Overall

8.1

Boarding

8.6

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

Food

8.5

Crew

8.9

Comfort

8.1

Entertainment

7.7

Overall

8.1

Boarding

8.6

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

Food

8.5

Crew

8.9

Comfort

8.1

Entertainment

7.7

Overall

8.1

Boarding

8.6

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 Dublin. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How popular is this Seattle to Dublin flight route?

    Within the past month, 12 users have taken a look at flights from Seattle/Tacoma Intl to Dublin.

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

    Cheapflights users have booked flights from Seattle to Dublin round-trip from $473. Other airlines that can offer you cheap pricing are United Airlines, from $478, and Scandinavian Airlines, from $479. You may be able to fly from Seattle to Dublin for 30% 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 WestJet. According to our data, you can fly for as low as $406. Users have also found prices from $413 and $416 on Aer Lingus and Air Canada, 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 (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 Dublin?

    Looking at all options, your cheapest flight can be booked for $394. While the most popular route (Seattle/Tacoma Intl - Dublin) can be booked for $454 on average our data indicates $2,592 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 $66 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, November is the cheapest month in which you can book a flight from Seattle to Dublin (average of $509). Flying from Seattle to Dublin 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.

See more FAQs

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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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$379Average$588FlexibilityNo cancel feeOn-time76%
IberiaCheapest$391Average$596FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$445Average$625FlexibilityNo cancel feeOn-time70%
Aer LingusCheapest$452Average$747FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$468Average$506FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$486Average$739FlexibilityNo cancel feeOn-time69%
DeltaCheapest$490Average$634FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$496Average$741FlexibilityNo cancel feeOn-time76%
Air CanadaCheapest$509Average$697FlexibilityNo cancel feeOn-time67%
Air FranceCheapest$518Average$774FlexibilityNo cancel feeOn-time77%

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