HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Dublin

$252+ 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 9/20. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — DUB
Aug 5 — Aug 121
Tue 8/5
Tue 8/12
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 January or November, booked 70 days in advance, depart on a Wednesday or Sunday and return on a Saturday

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 July 31, 2025.

Round-trip from

$367
(United Airlines)

One-way from

$252
(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 Dublin
Search Deals
One-way flight from Seattle/Tacoma Intl to Dublin
Search Deals
Highest demand for flights based on searches. 22% potential increase in price ($197 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($29 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2025
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

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 July 31, 2025.

This Justfly.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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/294:10 pmSEA - DUB
1 stop18h 00mMultiple Airlines
Wed 11/59:00 amDUB - SEA
2 stops42h 16mMultiple Airlines
Deal found 7/31$365
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/117:20 amSEA - DUB
1 stop16h 25mUnited Airlines
Thu 8/2111:35 amDUB - SEA
2 stops18h 40mUnited Airlines
Deal found 7/31$367
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/36:00 amSEA - DUB
2 stops18h 45mDelta
Tue 12/99:45 amDUB - SEA
1 stop18h 47mDelta
Deal found 7/31$368
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/62:35 pmSEA - DUB
1 stop11h 40mIcelandair
Sat 12/1311:30 amDUB - SEA
1 stop13h 30mIcelandair
Deal found 7/30$370
This Trip.com 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/116:10 amSEA - DUB
1 stop21h 30mIberia
Thu 8/211:45 pmDUB - SEA
1 stop17h 56mIberia
Deal found 7/29$374
This Booking.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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/77:15 amSEA - DUB
1 stop16h 30mAir Canada
Tue 9/239:20 amDUB - SEA
1 stop18h 11mAir Canada
Deal found 7/31$382
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.
Sun 9/77:35 pmSEA - DUB
Nonstop9h 00mAer Lingus
Tue 9/234:10 pmDUB - SEA
Nonstop9h 40mAer Lingus
Deal found 7/29$383
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.
Tue 11/116:50 pmSEA - DUB
1 stop14h 10mBritish Airways
Thu 11/208:40 pmDUB - SEA
1 stop28h 15mBritish Airways
Deal found 7/29$388
This Finnair 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/141:32 pmSEA - DUB
1 stop14h 08mFinnair
Thu 8/211:45 pmDUB - SEA
1 stop17h 56mFinnair
Deal found 7/30$418

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 July 31, 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

Wed 10/29

4:10 pm-5:10 pm

1 stop18h 00m

Dublin

Wed 11/5

9:00 am-7:16 pm

2 stops42h 16m

$365

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Mon 8/11

7:20 am-7:45 am

1 stop16h 25m

Dublin

Thu 8/21

11:35 am-10:15 pm

2 stops18h 40m

$367

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Wed 12/3

6:00 am-8:45 am

2 stops18h 45m

Dublin

Tue 12/9

9:45 am-8:32 pm

1 stop18h 47m

$368

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sat 12/6

2:35 pm-10:15 am

1 stop11h 40m

Dublin

Sat 12/13

11:30 am-5:00 pm

1 stop13h 30m

$370

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Mon 8/11

6:10 am-11:40 am

1 stop21h 30m

Dublin

Thu 8/21

1:45 pm-11:41 pm

1 stop17h 56m

$374

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sun 9/7

7:15 am-7:45 am

1 stop16h 30m

Dublin

Tue 9/23

9:20 am-6:36 pm

2 stops17h 16m

$382

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sun 9/7

7:35 pm-12:35 pm

Nonstop9h 00m

Dublin

Tue 9/23

4:10 pm-5:50 pm

Nonstop9h 40m

$383

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Tue 11/11

6:50 pm-5:00 pm

1 stop14h 10m

Dublin

Thu 11/20

8:40 pm-4:55 pm

1 stop28h 15m

$388

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

$403

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sat 9/20

9:39 pm-12:35 pm

2 stops54h 56m

$252

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

Showing 1-10 of 12 results
1
2

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 July 25, 2025.

To ensure you get the cheapest price possible for a flight from Seattle to Dublin, you should look to book at least 70 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 $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 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 July 31, 2025.

It’s typically best to fly out from Seattle to Dublin at noon. Doing so could potentially save you 32% 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. Saturday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Seattle to Dublin

Explore weekly flight availability from Seattle to Dublin. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated July 31, 2025.

The most flights from SEA to DUB are scheduled on a Monday (3 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (2 on average).

What’s the top layover airport for flights from Seattle to Dublin?

Share of 1-stop round-trip flights from Seattle to Dublin chosen by Cheapflights users in the past 12 months, using the same layover each way.

London (LHR) – chosen by Cheapflights users on 61% of 1-stop itineraries from Seattle to Dublin on Cheapflights.

What’s the cheapest layover airport for flights from Seattle to Dublin?

Average round-trip fare for 1-stop flights from Seattle to Dublin, chosen by Cheapflights users in the past 12 months, with the same layover each way.

Reykjavik (KEF) is the most affordable 1-stop option, with an average round-trip price of $559.

What’s the fastest layover option from Seattle to Dublin?

Shortest average travel time for 1-stop one-way flights from Seattle to Dublin, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via London (LHR) have the shortest average one-way travel time for 1-stop routes: 12h 20m.

Which airport typically offers the quickest layover for flights from Seattle to Dublin?

Average layover duration for 1-stop one-way flights from Seattle to Dublin, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Chicago (ORD) offer the fastest connection on this route, with an average layover time of 1h 13m.

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 July 31, 2025.
Read through reviews of airlines operating flights from Seattle to Dublin, such as Delta, Finnair, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Overall

8.0

Food

7.3

Crew

8.5

Entertainment

7.9

Boarding

8.2

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
7,981 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Overall

8.0

Food

7.3

Crew

8.5

Entertainment

7.9

Boarding

8.2

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
7,981 reviews

Comfort

7.9

Overall

8.0

Food

7.3

Crew

8.5

Entertainment

7.9

Boarding

8.2

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!
United Airlines
7.4
Good
8,900 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Overall

8.0

Food

7.3

Crew

8.5

Entertainment

7.9

Boarding

8.2

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!
WestJet
7.2
Good
2,978 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Overall

8.0

Food

7.3

Crew

8.5

Entertainment

7.9

Boarding

8.2

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 Canada
7.1
Good
9,851 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Overall

8.0

Food

7.3

Crew

8.5

Entertainment

7.9

Boarding

8.2

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 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 00m for a nonstop flight. There are 2 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, 15 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 $367. Other airlines that can offer you cheap pricing are Delta, from $369, and Icelandair, from $371. You may be able to fly from Seattle to Dublin for 44% less than the average price by searching for these airlines.

  • 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 (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 Dublin?

    Looking at all options, your cheapest flight can be booked for $344. While the most popular route (Seattle/Tacoma Intl - Dublin) can be booked for $340 on average our data indicates $1,577 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?

    Harpa, Hallgrímskirkja, and Laugardalslaug Geothermal Pool are the most popular attractions in Reykjavik if you're in need of something to do during your layover. Harpa, Hallgrímskirkja, and Laugardalslaug Geothermal Pool can be accessed by traveling approximately 23.3 mi, 23.2 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 $69 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 $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

Traveling to a place near Dublin?

Book flights to Dublin if you plan to visit one of these locations
Maynooth
Castleknock
Swords
Wicklow
Leixlip

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.

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 July 31, 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$632FlexibilityNo cancel feeOn-timeN/A
Aer LingusCheapest$427Average$731FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$449Average$633FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$454Average$730FlexibilityNo cancel feeOn-time69%
KLMCheapest$460Average$619FlexibilityNo cancel feeOn-time75%

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.
Site
©2025 Cheapflights