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$374+ Cheap flights from Dublin (DUB) to Seattle (SEA)

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 9/4. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — SEA
Aug 16 — Aug 231
Sun 8/16
Sun 8/23
1 adult, Economy
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1. Tell us where you want to go

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Cheapflights Tip: The best prices from Dublin to Seattle/Tacoma Intl are usually found in November or April, booked 58 days in advance, depart on a Friday or Thursday and return on a Wednesday

Cheap flight deals from Dublin to Seattle

Cheapest flights from Dublin to Seattle
Explore the most affordable flight options available from Dublin to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 17, 2026.

This deal was found by Cheapflights users on 7/15. 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.
Thu 10/2911:30 am
DUB
-
SEA
1 stop13h 30m
Icelandair
Thu 11/122:35 pm
SEA
-
DUB
1 stop11h 40m
Icelandair
Deal found 7/15$582
This Booking.com deal was found by Cheapflights users on 7/16. 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.
Fri 11/2711:30 am
DUB
-
SEA
1 stop13h 30m
Icelandair
Fri 12/42:35 pm
SEA
-
DUB
1 stop11h 40m
Icelandair
Deal found 7/16$587
This Expedia deal was found by Cheapflights users on 7/15. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/107:05 pm
DUB
-
SEA
1 stop26h 40m
Scandinavian Airlines
Sat 9/263:55 pm
SEA
-
DUB
2 stops18h 30m
Scandinavian Airlines
Deal found 7/15$588
This Gotogate deal was found by Cheapflights users on 7/15. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2812:40 pm
DUB
-
SEA
1 stop33h 05m
Scandinavian Airlines
Fri 9/113:55 pm
SEA
-
DUB
1 stop18h 25m
Scandinavian Airlines
Deal found 7/15$593
This Scandinavian Airlines deal was found by Cheapflights users on 7/14. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/197:05 pm
DUB
-
SEA
1 stop26h 40m
Scandinavian Airlines
Tue 9/293:55 pm
SEA
-
DUB
1 stop18h 25m
Scandinavian Airlines
Deal found 7/14$596
This Scandinavian Airlines deal was found by Cheapflights users on 7/17. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/267:05 pm
DUB
-
SEA
1 stop26h 40m
Scandinavian Airlines
Sun 10/43:55 pm
SEA
-
DUB
1 stop18h 25m
Scandinavian Airlines
Deal found 7/17$600

Find flight deals from Dublin to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Dublin (DUB) to Seattle (SEA). 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 17, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$582

One-way from

$374
(JetBlue)

Popular in

July

Cheapest in

November

Average price

$1,041

Good round-trip deal

$813 or less

Good one-way deal

$757 or less
Provider with most accurate pricing for Dublin-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Dublin-Seattle/Tacoma Intl flights.
Search Deals
From Dublin to Seattle/Tacoma Intl
Search Deals
One-way flight from Dublin to Seattle/Tacoma Intl
Search Deals
Highest demand for flights based on searches. 22% potential increase in price ($214 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($28 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals
Price to beat on a round-trip flight from Dublin to Seattle/Tacoma Intl.
Search Deals
Price to beat on a one-way flight from Dublin to Seattle/Tacoma Intl.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dublin to Seattle 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 17, 2026.
Use the filters below to find and compare flights from Dublin to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Sat 9/19

8:00 pm-1:45 pm

2 stops25h 45m

Seattle/Tacoma Intl

Tue 9/29

3:55 pm-6:20 pm

1 stop18h 25m

$604

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Sat 9/26

7:05 pm-1:45 pm

1 stop26h 40m

Seattle/Tacoma Intl

Sun 10/4

3:55 pm-10:10 am

2 stops34h 15m

$617

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Sat 8/29

7:05 pm-1:45 pm

1 stop26h 40m

Seattle/Tacoma Intl

Sat 9/5

3:55 pm-10:25 am

2 stops34h 30m

$618

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Wed 8/26

9:40 am-9:40 am

3 stops32h 00m

Seattle/Tacoma Intl

Wed 9/2

7:00 am-7:05 pm

3 stops28h 05m

$680

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Thu 10/29

5:45 am-12:47 pm

1 stop14h 02m

Seattle/Tacoma Intl

Thu 11/12

8:25 am-9:00 am

2 stops16h 35m

$741

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Sat 9/26

11:10 am-4:35 pm

1 stop13h 25m

Seattle/Tacoma Intl

Sun 10/4

1:30 pm-3:25 pm

1 stop17h 55m

$745

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Tue 11/24

8:50 am-8:27 pm

2 stops19h 37m

Seattle/Tacoma Intl

Sat 11/28

10:00 pm-9:45 am

1 stop27h 45m

$750

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Wed 9/23

5:55 am-11:47 am

1 stop13h 52m

Seattle/Tacoma Intl

Wed 9/30

6:00 am-10:25 am

2 stops20h 25m

$751

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Sat 9/26

5:55 am-11:47 am

1 stop13h 52m

Seattle/Tacoma Intl

Sun 10/4

1:30 pm-3:25 pm

1 stop17h 55m

$754
Quickest round-trip

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Sat 10/10

11:10 am-4:35 pm

1 stop13h 25m

Seattle/Tacoma Intl

Fri 10/23

1:35 pm-12:40 pm

2 stops15h 05m

$760

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/14

Showing 1-10 of 23 resultsSorted by cheapest first
1
2
3

Compare providers for flights from Dublin to Seattle

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 Dublin to Seattle in July.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
GurufarePrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice 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 Dublin-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Dublin-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Dublin-Seattle flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Dublin-Seattle 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 Dublin-Seattle 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 Dublin to Seattle

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

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

To ensure you get the cheapest price possible for a flight from Dublin to Seattle, you should look to book at least 57 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 Dublin to Seattle?

Currently, November is the cheapest month in which you can book a flight from Dublin to Seattle (average of $559). Flying from Dublin to Seattle in July is currently the most expensive (average of $1,041). 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 DUB to SEA?

Find hourly flight availability from Dublin to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 17, 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Dublin to Seattle as you normally would.

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

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated July 17, 2026.
Read reviews from past customers who have flown Aer Lingus from Dublin to Seattle. 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.
Aer Lingus
7.3
Good
1,671 reviews

Entertainment

7.0

Food

6.6

Overall

7.3

Boarding

7.4

Comfort

7.2

Crew

8.1

Reviews

1 / 20
2.0
Mediocre

Anonymous,May 2026

DUB - EWR

Underpricer is a terrible organization that inserted itself as a “travel agent” simply by way of me booking on kayak. Never would I have willing assented to using underpricer. Further, we had a problem whereby two duplicate one-way flights from Dublin were inadvertently booked for me and my wife, stemming from a family emergency. My wife’s sister / my sister in law had a brain tumor and immediate surgery to remove it, which obviously impacted our previously planned travel arrangements. I tried to cancel the flight due to the extenuating circumstances. Underpricer said canceling was not possible, but a credit would be possible for the exact same flight - one way from Dublin - to be used in one year from the original flight date. I asked if it would be possible to make the credit a general credit to any participating AerLingus airport destination, which would allow more flexibility than having to go back to Ireland within a year. In order to pursue the credit, Underpricer requested documentary proof regarding my sister in laws brain tumor, which we gave them. Underpricer then asked us to document our relationship to the patient - so I gave them my marriage certificate to evidence my wife and her sister having the same last name. Underpricer asked for further proof, so we gave them copies of my passport, my wife’s passport, and my sister in laws passport. All of these hoops to jump through for Underpricer, with sporadic communication on their part throughout, only for them to say 3 days before the original booking that no credit was available - not even the one they originally offered. They said my only option was to pick a date within the next year to move the flight to - and of course to make that change, they charged me an additional $350 fee just to make that change. What a pathetic, fraudulent organization. Kayak should be embarrassed to be associated with Underpricer and should cease that relationship immediately. And for AerLingus, who only Underpricer could talk to regarding the booking (I was not permitted) to not understand our family’s situation and just stand by blanket policy that no credit is permitted, is equally disappointing.
Aer Lingus
7.3
Good
1,671 reviews
Aer Lingus
7.3
Good
1,671 reviews

Entertainment

7.0

Food

6.6

Overall

7.3

Boarding

7.4

Comfort

7.2

Crew

8.1

Reviews

1 / 20
2.0
Mediocre

Anonymous,May 2026

DUB - EWR

Underpricer is a terrible organization that inserted itself as a “travel agent” simply by way of me booking on kayak. Never would I have willing assented to using underpricer. Further, we had a problem whereby two duplicate one-way flights from Dublin were inadvertently booked for me and my wife, stemming from a family emergency. My wife’s sister / my sister in law had a brain tumor and immediate surgery to remove it, which obviously impacted our previously planned travel arrangements. I tried to cancel the flight due to the extenuating circumstances. Underpricer said canceling was not possible, but a credit would be possible for the exact same flight - one way from Dublin - to be used in one year from the original flight date. I asked if it would be possible to make the credit a general credit to any participating AerLingus airport destination, which would allow more flexibility than having to go back to Ireland within a year. In order to pursue the credit, Underpricer requested documentary proof regarding my sister in laws brain tumor, which we gave them. Underpricer then asked us to document our relationship to the patient - so I gave them my marriage certificate to evidence my wife and her sister having the same last name. Underpricer asked for further proof, so we gave them copies of my passport, my wife’s passport, and my sister in laws passport. All of these hoops to jump through for Underpricer, with sporadic communication on their part throughout, only for them to say 3 days before the original booking that no credit was available - not even the one they originally offered. They said my only option was to pick a date within the next year to move the flight to - and of course to make that change, they charged me an additional $350 fee just to make that change. What a pathetic, fraudulent organization. Kayak should be embarrassed to be associated with Underpricer and should cease that relationship immediately. And for AerLingus, who only Underpricer could talk to regarding the booking (I was not permitted) to not understand our family’s situation and just stand by blanket policy that no credit is permitted, is equally disappointing.

Related info for your journey

Find useful and relevant information for your journey from Dublin to Seattle. 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 Dublin to Seattle?

    If you book a flight from Dublin to Seattle, you will be flying from Dublin to Seattle/Tacoma Intl. Flights to Seattle/Tacoma Intl (SEA) from Dublin (DUB) take 9h 45m for a nonstop flight. There are 4 flights from Dublin to Seattle per day from 1 airline.

  • How long is the flight from Dublin to Seattle?

    Scandinavian Airlines can get you from Dublin to Seattle in just under 25h 45m. Your travel time can differ by up to . The distance from Dublin to Seattle is about 4523 mi.

  • What is the cheapest airline to fly from Dublin to Seattle round-trip?

    Flying on Aer Lingus is currently your cheapest option to Seattle, with prices starting at $532. Aer Lingus is currently priced 27% below the average price you’ll pay for this route.

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

    The cheapest airline one-way is WestJet, with whom users have recently found tickets for as low as $330. However, be on the lookout for offers from Icelandair and Aer Lingus, as they are both options that can get you from Dublin to Seattle for a low price.

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

    Consider American Airlines (78%), Aer Lingus (78%) or Iberia (78%) when booking your flight. These represent the most reliable airlines when flying from Dublin to Seattle.

  • What are the cheapest flights from Dublin to Seattle?

    Looking at all options, your cheapest flight can be booked for $645. While the most popular route (Dublin - Seattle/Tacoma Intl) can be booked for $587 on average, our data indicates $1,671 when flying from Dublin to Seattle.

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

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

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

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

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

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

    Currently, November is the cheapest month in which you can book a flight from Dublin to Seattle (average of $559). Flying from Dublin to Seattle in July is currently the most expensive (average of $1,041). 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 Seattle?

Book flights to Seattle if you plan to visit one of these locations
SeaTac
Tacoma
Lacey
Leavenworth
Olympia
Ocean Shores
Edmonds
Snoqualmie
Tumwater
Tukwila
Renton
Kent
Lynnwood
Puyallup
Ellensburg
Fife
Marysville
Lakewood
Issaquah
Shoreline

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Alternative routes for Dublin to Seattle

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

Top airline flying from Dublin to Seattle

Discover the top airline that operate flights from Dublin to Seattle. 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 17, 2026.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest$532Average$685FlexibilityNo cancel feeOn-timeN/A

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