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$255+ 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 3/17. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — SEA
Feb 26 — Mar 51
Thu 2/26
Thu 3/5
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 February or November, booked 66 days in advance, depart on a Sunday or Tuesday and return on a Tuesday

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 January 27, 2026.

This FlightHub deal was found by Cheapflights users on 1/26. 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.
Thu 4/92:15 pm
DUB
-
SEA
1 stop14h 25m
Icelandair
Thu 4/163:40 pm
SEA
-
DUB
1 stop11h 25m
Icelandair
Deal found 1/26$439
This FlightHub deal was found by Cheapflights users on 1/26. 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.
Wed 2/2511:30 am
DUB
-
SEA
1 stop13h 30m
Icelandair
Wed 3/113:35 pm
SEA
-
DUB
1 stop11h 40m
Icelandair
Deal found 1/26$447
This Mytrip deal was found by Cheapflights users on 1/27. 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 2/511:30 am
DUB
-
SEA
1 stop13h 30m
Icelandair
Tue 2/102:35 pm
SEA
-
DUB
1 stop11h 40m
Icelandair
Deal found 1/27$448
This Mytrip deal was found by Cheapflights users on 1/26. 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.
Fri 11/611:30 am
DUB
-
SEA
1 stop13h 30m
Icelandair
Tue 11/102:35 pm
SEA
-
DUB
1 stop11h 40m
Icelandair
Deal found 1/26$449
This Booking.com deal was found by Cheapflights users on 1/25. 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 9/1112:15 pm
DUB
-
SEA
1 stop13h 40m
Icelandair
Fri 10/23:40 pm
SEA
-
DUB
1 stop13h 35m
Icelandair
Deal found 1/25$450
This FlightHub deal was found by Cheapflights users on 1/27. 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.
Wed 2/411:30 am
DUB
-
SEA
1 stop13h 30m
Icelandair
Mon 2/92:35 pm
SEA
-
DUB
1 stop11h 40m
Icelandair
Deal found 1/27$451
This Trip.com deal was found by Cheapflights users on 1/25. 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 4/252:15 pm
DUB
-
SEA
1 stop11h 40m
Icelandair
Tue 4/283:40 pm
SEA
-
DUB
1 stop11h 25m
Icelandair
Deal found 1/25$457
This Finnair deal was found by Cheapflights users on 1/26. 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.
Fri 5/159:30 am
DUB
-
SEA
1 stop20h 56m
Multiple Airlines
Mon 6/88:20 pm
SEA
-
DUB
1 stop14h 20m
Multiple Airlines
Deal found 1/26$460
This Finnair deal was found by Cheapflights users on 1/26. 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.
Sat 9/198:15 pm
DUB
-
SEA
1 stop23h 20m
Multiple Airlines
Tue 9/291:35 pm
SEA
-
DUB
1 stop17h 10m
Multiple Airlines
Deal found 1/26$463
This oojo deal was found by Cheapflights users on 1/27. 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.
Thu 9/32:15 pm
DUB
-
SEA
1 stop14h 25m
Icelandair
Wed 9/233:40 pm
SEA
-
DUB
1 stop13h 35m
Icelandair
Deal found 1/27$465

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 January 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$439
(FlightHub)

One-way from

$255
(Trip.com)

Popular in

July

Cheapest in

February

Average price

$642

Good round-trip deal

$549 or less

Good one-way deal

$637 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. 20% potential increase in price ($186 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($26 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 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 January 27, 2026.
Use the filters below to find and compare flights from Dublin to Seattle that are best for you.

Fly from

Dublin

Fly to

Seattle

Route

Depart

Return

Price

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Fri 5/15

9:30 am-10:26 pm

1 stop20h 56m

Seattle/Tacoma Intl

Mon 6/8

8:20 pm-6:40 pm

1 stop14h 20m

$464

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Fri 2/6

11:30 am-5:00 pm

1 stop13h 30m

Seattle/Tacoma Intl

Sun 2/8

2:35 pm-10:15 am

1 stop11h 40m

$473

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Mon 2/23

4:00 pm-11:30 am

1 stop27h 30m

Seattle/Tacoma Intl

Mon 3/9

7:50 pm-7:40 pm

1 stop16h 50m

$494

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Mon 2/23

3:10 pm-11:30 am

1 stop28h 20m

Seattle/Tacoma Intl

Sun 3/8

7:50 pm-7:55 am

1 stop29h 05m

$495

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Wed 3/4

8:20 am-5:00 pm

2 stops16h 40m

Seattle/Tacoma Intl

Mon 3/9

3:35 pm-9:20 pm

2 stops22h 45m

$539

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Fri 4/10

12:40 pm-9:23 pm

1 stop16h 43m

Seattle/Tacoma Intl

Mon 4/13

5:43 am-9:45 am

1 stop20h 02m

$554

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Fri 3/20

8:35 pm-12:30 pm

1 stop22h 55m

Seattle/Tacoma Intl

Sun 4/5

5:30 am-9:45 am

1 stop20h 15m

$563

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Fri 2/27

5:55 am-11:40 am

1 stop13h 45m

Seattle/Tacoma Intl

Sat 3/7

7:30 am-9:20 am

1 stop17h 50m

$568

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Wed 3/11

5:15 pm-12:35 pm

1 stop26h 20m

Seattle/Tacoma Intl

Wed 3/18

7:20 am-9:20 am

1 stop19h 00m

$569

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Mon 4/20

11:30 am-2:19 pm

2 stops34h 49m

$277

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

Showing 1-10 of 18 results
1
2

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 January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars
GurufarePrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy2 starsTrust Score*2 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?

Use this chart to determine the optimal time to book a round-trip flight from Dublin to Seattle. Price data was last updated on January 23, 2026.

To ensure you get the cheapest price possible for a flight from Dublin to Seattle, you should look to book at least 66 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, February is the cheapest month in which you can book a flight from Dublin to Seattle (average of $469). Flying from Dublin to Seattle in July is currently the most expensive (average of $790). 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.

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 January 27, 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
7.2
Good
1,442 reviews

Boarding

7.4

Crew

8.0

Food

6.6

Comfort

7.1

Overall

7.2

Entertainment

6.9

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

DUB - EDI

Fine except for app. Couldn’t check in online - kept saying I couldn’t check in until the morning after my flight. On second leg I could check in but couldn’t get my boarding pass into my wallet. Thankfully I took a screenshot of it because I couldn’t retrieve it when we boarded - the app prohibited it.
Aer Lingus
7.2
Good
1,442 reviews
Aer Lingus
7.2
Good
1,442 reviews

Boarding

7.4

Crew

8.0

Food

6.6

Comfort

7.1

Overall

7.2

Entertainment

6.9

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

DUB - EDI

Fine except for app. Couldn’t check in online - kept saying I couldn’t check in until the morning after my flight. On second leg I could check in but couldn’t get my boarding pass into my wallet. Thankfully I took a screenshot of it because I couldn’t retrieve it when we boarded - the app prohibited it.

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.

  • How popular is this Dublin to Seattle flight route?

    Flights from Dublin to Seattle/Tacoma Intl have been viewed 2 times in the past calendar month.

  • How long is the flight from Dublin to Seattle?

    Icelandair and British Airways can get you from Dublin to Seattle in just under 13h 30m. Your travel time can differ by up to 14h. The distance from Dublin to Seattle is about 4523 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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 $523. 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 $197. 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 (86%), Aer Lingus (86%) or British Airways (86%) 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 $549. While the most popular route (Dublin - Seattle/Tacoma Intl) can be booked for $432 on average, our data indicates $702 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, February is the cheapest month in which you can book a flight from Dublin to Seattle (average of $469). Flying from Dublin to Seattle in July is currently the most expensive (average of $790). 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
Tacoma
SeaTac
Lakewood
Ocean Shores
Olympia
Lynnwood
Lacey
Edmonds
Renton
Puyallup
Kirkland
Kent
Tukwila
Fife
Aberdeen
Shoreline
Marysville
Centralia
Federal Way
Chehalis

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 Dublin to Seattle

See prices for flight routes from nearby airports that may be better suited for you.
Dublin to Portland flights
Cork to Seattle flights
Dublin to Spokane flights
Shannon to Seattle flights
Shannon to Spokane flights
Cork to Portland 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 January 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest$523Average$715FlexibilityNo cancel feeOn-timeN/A

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