Cheap flights from Dublin to Seattle from £301

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 4/4. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — SEA
17 Mar — 24 Mar1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Dublin to Seattle/Tacoma Intl are usually found in November or September, booked 42 days in advance, depart on a Friday or Tuesday and return on a Monday

Cheap flight deals from Dublin to Seattle

Enter your travel dates to find the best prices.

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 15 February 2026.

Sat 19/920:15
DUB
-
SEA
1 stop23h 20m
Multiple Airlines
Tue 29/920:20
SEA
-
DUB
1 stop12h 40m
Multiple Airlines
Deal found 15/2£340
Fri 15/509:30
DUB
-
SEA
1 stop21h 08m
Multiple Airlines
Mon 8/620:20
SEA
-
DUB
1 stop14h 20m
Multiple Airlines
Deal found 14/2£342
Mon 18/509:30
DUB
-
SEA
1 stop23h 00m
Finnair
Thu 28/513:46
SEA
-
DUB
1 stop14h 04m
Finnair
Deal found 13/2£345
Sat 10/1020:15
DUB
-
SEA
1 stop23h 20m
Multiple Airlines
Fri 23/1007:49
SEA
-
DUB
1 stop17h 56m
Multiple Airlines
Deal found 13/2£346
Thu 9/409:30
DUB
-
SEA
1 stop18h 06m
Finnair
Thu 16/407:09
SEA
-
DUB
1 stop18h 36m
Finnair
Deal found 15/2£351

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 15 February 2026.

Round-trip from

£342

One-way from

£301

Popular in

July

Cheapest in

November

Average price

£507

Good round-trip deal

£469 or less
15/5-8/6
  • 15/5-8/6
  • 2 total stops
  • 35h 28m total
  • Dublin to Seattle
WestJet
  • WestJet
  • 4/4
  • 2 total stops
  • 34h 49m total
  • Dublin to Seattle
Highest demand for flights based on searches. 17% potential increase in price (£86 potential increase over avg. return price).
Cheapest flight prices on average. 2% potential price decrease (£11 potential savings vs. average return price).
Average for round-trip flights in February 2026
Price to beat on a round-trip flight from Dublin to Seattle/Tacoma Intl.

Cheapflights Fare Finder

 
Customise 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 858,174 searches. Data last updated 15 February 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

Mon 18/5

09:30-00:30

1 stop23h 00m

Seattle/Tacoma Intl

Thu 28/5

13:46-11:50

1 stop14h 04m

£345

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Tue 3/3

13:25-11:35

1 stop30h 10m

Seattle/Tacoma Intl

Mon 9/3

15:10-22:55

1 stop24h 45m

£397

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Fri 3/4

11:10-16:30

1 stop13h 20m

Seattle/Tacoma Intl

Sat 11/4

06:00-07:55

1 stop17h 55m

£400

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Mon 18/5

05:55-16:30

1 stop18h 35m

Seattle/Tacoma Intl

Thu 28/5

07:15-09:15

1 stop18h 00m

£401

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Mon 13/4

20:30-11:35

1 stop23h 05m

Seattle/Tacoma Intl

Sun 19/4

20:20-19:35

1 stop15h 15m

£402

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Mon 18/5

05:55-16:30

1 stop18h 35m

Seattle/Tacoma Intl

Thu 28/5

09:34-12:40

2 stops19h 06m

£402

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Sat 4/4

11:30-14:19

2 stops34h 49m

£301

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Fri 15/5

10:40-19:19

1 stop16h 39m

£335

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Mon 30/3

21:55-10:40

3 stops44h 45m

£335

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Tue 31/3

06:30-10:40

3 stops36h 10m

£346

Flights are sorted by cheapest return flights first.

Deals found on 13/2

Showing 1-10 of 14 results
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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 return 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 return flight from Dublin to Seattle. Price data was last updated on 13 February 2026.

Booking 42 days in advance of your planned departure date is, on average, the best time to get cheap flights from Dublin to Seattle. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, September is the cheapest month in which you can book a flight from Dublin to Seattle (average of £341). Flying from Dublin to Seattle in July is currently the most expensive (average of £576). 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 for a return flight 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 15 February 2026.
Read through reviews of airlines operating flights from Dublin to Seattle, such as Scandinavian Airlines, American Airlines, andAer Lingus. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Entertainment

6.7

Food

6.7

Crew

8.0

Comfort

7.3

Boarding

7.6

Overall

7.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jan 2026

CPH - FRA

Very bad experience, my baggage didn’t arrive resulting In lots of future flight and hotel cancellation. I won’t recommend this flight to anyone.

Entertainment

6.7

Food

6.7

Crew

8.0

Comfort

7.3

Boarding

7.6

Overall

7.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jan 2026

CPH - FRA

Very bad experience, my baggage didn’t arrive resulting In lots of future flight and hotel cancellation. I won’t recommend this flight to anyone.

Entertainment

6.7

Food

6.7

Crew

8.0

Comfort

7.3

Boarding

7.6

Overall

7.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jan 2026

CPH - FRA

Very bad experience, my baggage didn’t arrive resulting In lots of future flight and hotel cancellation. I won’t recommend this flight to anyone.

Entertainment

6.7

Food

6.7

Crew

8.0

Comfort

7.3

Boarding

7.6

Overall

7.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jan 2026

CPH - FRA

Very bad experience, my baggage didn’t arrive resulting In lots of future flight and hotel cancellation. I won’t recommend this flight to anyone.

Entertainment

6.7

Food

6.7

Crew

8.0

Comfort

7.3

Boarding

7.6

Overall

7.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jan 2026

CPH - FRA

Very bad experience, my baggage didn’t arrive resulting In lots of future flight and hotel cancellation. I won’t recommend this flight to anyone.

Entertainment

6.7

Food

6.7

Crew

8.0

Comfort

7.3

Boarding

7.6

Overall

7.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jan 2026

CPH - FRA

Very bad experience, my baggage didn’t arrive resulting In lots of future flight and hotel cancellation. I won’t recommend this flight to anyone.

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 2 flights from Dublin to Seattle per day from 5 airlines.

  • How popular is this Dublin to Seattle flight route?

  • How long is the flight from Dublin to Seattle?

    For as low as £345, Finnair can have you in Seattle from Dublin in 23h. There are 4523 mi between Dublin and Seattle.

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

    According to our current data, Scandinavian Airlines (£314), British Airways (£375), and Aer Lingus (£403) offers the cheapest pricing from Dublin to Seattle. You may be able to fly from Dublin to Seattle for 41% less than the average price by searching for these airlines.

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

    Consider American Airlines (78%), Aer Lingus (78%) or British Airways (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 for the cheapest flight from Dublin to Seattle? While on average our users pay £590, our data indicates the cheapest price to be £402. The most popular route (Dublin - Seattle/Tacoma Intl), is priced around £472.

  • 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 holiday 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, September is the cheapest month in which you can book a flight from Dublin to Seattle (average of £341). Flying from Dublin to Seattle in July is currently the most expensive (average of £576). 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

Travelling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
Federal Way
SeaTac

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Top 5 airlines flying from Dublin to Seattle

Discover the top 5 airlines 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 858,174 searches. Data last updated 15 February 2026.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest£314Average£416FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
British AirwaysCheapest£375Average£439FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Aer LingusCheapest£403Average£560FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
IcelandairCheapest£415Average£486FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
American AirlinesCheapest£531Average£657FlexibilityNo cancel feeOn-time71%
Search American Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Dublin to Seattle?

Deals for Dublin to Seattle flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Dublin to Seattle?

Cheapflights simply makes it quick and affordable to book flights from Dublin to Seattle by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Dublin to Seattle with no change fees?

Yes! Cheapflights helps users easily find flights from Dublin to Seattle with no change fees.

Can Cheapflights notify me if prices for flights from Dublin to Seattle become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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