Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from Dublin to Seattle from £298

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 9/6. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — SEA
15 Jun — 22 Jun1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Dublin to Seattle/Tacoma Intl are usually found in April or November, booked 58 days in advance, depart on a Monday or Friday 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 16 May 2026.

Fri 19/609:40
DUB
-
SEA
1 stop14h 20m
Multiple Airlines
Mon 29/613:30
SEA
-
DUB
1 stop12h 10m
Multiple Airlines
Deal found 14/5£439
Mon 1/620:30
DUB
-
SEA
1 stop23h 05m
British Airways
Sun 14/620:20
SEA
-
DUB
1 stop31h 40m
British Airways
Deal found 15/5£449
Fri 11/919:05
DUB
-
SEA
1 stop26h 40m
Scandinavian Airlines
Sat 19/915:55
SEA
-
DUB
1 stop18h 25m
Scandinavian Airlines
Deal found 11/5£451
Tue 23/619:30
DUB
-
SEA
1 stop24h 05m
British Airways
Mon 29/613:30
SEA
-
DUB
1 stop12h 10m
British Airways
Deal found 12/5£452
Tue 9/609:30
DUB
-
SEA
1 stop23h 11m
Multiple Airlines
Tue 16/620:20
SEA
-
DUB
1 stop12h 40m
Multiple Airlines
Deal found 13/5£453
Tue 9/609:30
DUB
-
SEA
1 stop23h 11m
Finnair
Wed 24/610:27
SEA
-
DUB
1 stop17h 23m
Finnair
Deal found 13/5£454
Thu 21/509:30
DUB
-
SEA
1 stop22h 46m
Finnair
Wed 3/607:31
SEA
-
DUB
1 stop18h 14m
Finnair
Deal found 13/5£455
Mon 18/509:30
DUB
-
SEA
1 stop23h 06m
Finnair
Thu 28/510:27
SEA
-
DUB
1 stop17h 23m
Finnair
Deal found 11/5£456
Fri 19/605:55
DUB
-
SEA
1 stop18h 29m
KLM
Sat 27/622:20
SEA
-
DUB
1 stop26h 55m
KLM
Deal found 13/5£457
Tue 9/615:25
DUB
-
SEA
Nonstop9h 45m
Aer Lingus
Wed 24/619:10
SEA
-
DUB
Nonstop9h 10m
Aer Lingus
Deal found 13/5£459
Thu 21/509:30
DUB
-
SEA
1 stop22h 46m
Finnair
Thu 28/510:27
SEA
-
DUB
1 stop17h 23m
Finnair
Deal found 11/5£462

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 16 May 2026.

Round-trip from

£439

One-way from

£298

Popular in

July

Cheapest in

April

Average price

£479

Good round-trip deal

£460 or less
19/6-29/6
  • 19/6-29/6
  • 2 total stops
  • 26h 30m total
  • Dublin to Seattle
Search Deals
WestJet
  • WestJet
  • 9/6
  • 2 total stops
  • 29h 25m total
  • Dublin to Seattle
Search Deals
Highest demand for flights based on searches. 19% potential increase in price (£100 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£17 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 2026
Search Deals
Price to beat on a round-trip flight from Dublin to Seattle/Tacoma Intl.
Search Deals

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 16 May 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 return flight

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Thu 25/6

09:30-00:41

1 stop23h 11m

Seattle/Tacoma Intl

Sun 28/6

07:31-09:45

1 stop18h 14m

£456
Fastest return journey

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Fri 19/6

05:55-19:05

2 stops21h 10m

Seattle/Tacoma Intl

Mon 29/6

18:50-18:25

1 stop15h 35m

£468

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Fri 11/9

11:10-13:45

2 stops34h 35m

Seattle/Tacoma Intl

Tue 15/9

15:55-18:20

1 stop18h 25m

£490

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Sat 10/10

21:00-13:45

2 stops24h 45m

Seattle/Tacoma Intl

Fri 23/10

07:20-09:25

2 stops18h 05m

£551

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Wed 16/9

19:05-19:05

2 stops32h 00m

Seattle/Tacoma Intl

Wed 7/10

14:30-18:20

2 stops19h 50m

£625

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Tue 22/9

19:05-19:05

2 stops32h 00m

Seattle/Tacoma Intl

Tue 13/10

14:30-18:20

2 stops19h 50m

£649

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Thu 25/6

18:45-13:45

2 stops27h 00m

Seattle/Tacoma Intl

Sun 28/6

15:55-18:40

2 stops18h 45m

£701

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Wed 12/8

19:05-19:52

2 stops32h 47m

Seattle/Tacoma Intl

Sat 22/8

15:55-10:25

2 stops34h 30m

£702

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Sat 1/8

20:15-13:45

2 stops25h 30m

Seattle/Tacoma Intl

Mon 10/8

12:36-18:20

2 stops21h 44m

£751
Cheapest one-way

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Wed 8/7

11:30-21:04

1 stop17h 34m

£348

Flights are sorted by cheapest return flights first.

Deals found on 14/5

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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?

Booking 57 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, April is the cheapest month in which you can book a flight from Dublin to Seattle (average of £452). Flying from Dublin to Seattle in July is currently the most expensive (average of £769). 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 16 May 2026.

When flying from Dublin to Seattle, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 16 May 2026.
Read through reviews of airlines operating flights from Dublin to Seattle, such as Scandinavian Airlines,Aer Lingus, andAmerican Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Scandinavian Airlines
7.4
Good
1,778 reviews
Check prices

Crew

8.0

Boarding

7.7

Comfort

7.3

Overall

7.4

Food

6.7

Entertainment

6.7

Reviews

1 / 20
6.0
Good

Henry,May 2026

PRG - CPH

The flights were fine. However, on 7 May on the way to Prague in the Copenhagen terminal we asked SAS to provide assistance, and were assured we would have it, when we arrived from Prague to Copenhagen on 11 May so we wouldn't have to walk the long distance between the arrival gate and the departure-to-Newark gate. Assistance never showed up. Because of that we had to rush with great difficulty across the airport by foot. Luckily we were just in time to board our flight to Newark.
Scandinavian Airlines
7.4
Good
1,778 reviews
Scandinavian Airlines
7.4
Good
1,778 reviews
Check prices

Crew

8.0

Boarding

7.7

Comfort

7.3

Overall

7.4

Food

6.7

Entertainment

6.7

Reviews

1 / 20
6.0
Good

Henry,May 2026

PRG - CPH

The flights were fine. However, on 7 May on the way to Prague in the Copenhagen terminal we asked SAS to provide assistance, and were assured we would have it, when we arrived from Prague to Copenhagen on 11 May so we wouldn't have to walk the long distance between the arrival gate and the departure-to-Newark gate. Assistance never showed up. Because of that we had to rush with great difficulty across the airport by foot. Luckily we were just in time to board our flight to Newark.
Aer Lingus
7.3
Good
1,563 reviews
Scandinavian Airlines
7.4
Good
1,778 reviews
Check prices

Crew

8.0

Boarding

7.7

Comfort

7.3

Overall

7.4

Food

6.7

Entertainment

6.7

Reviews

1 / 20
6.0
Good

Henry,May 2026

PRG - CPH

The flights were fine. However, on 7 May on the way to Prague in the Copenhagen terminal we asked SAS to provide assistance, and were assured we would have it, when we arrived from Prague to Copenhagen on 11 May so we wouldn't have to walk the long distance between the arrival gate and the departure-to-Newark gate. Assistance never showed up. Because of that we had to rush with great difficulty across the airport by foot. Luckily we were just in time to board our flight to Newark.
American Airlines
7.1
Good
11,662 reviews
Scandinavian Airlines
7.4
Good
1,778 reviews
Check prices

Crew

8.0

Boarding

7.7

Comfort

7.3

Overall

7.4

Food

6.7

Entertainment

6.7

Reviews

1 / 20
6.0
Good

Henry,May 2026

PRG - CPH

The flights were fine. However, on 7 May on the way to Prague in the Copenhagen terminal we asked SAS to provide assistance, and were assured we would have it, when we arrived from Prague to Copenhagen on 11 May so we wouldn't have to walk the long distance between the arrival gate and the departure-to-Newark gate. Assistance never showed up. Because of that we had to rush with great difficulty across the airport by foot. Luckily we were just in time to board our flight to Newark.
Icelandair
7.0
Good
654 reviews
Scandinavian Airlines
7.4
Good
1,778 reviews
Check prices

Crew

8.0

Boarding

7.7

Comfort

7.3

Overall

7.4

Food

6.7

Entertainment

6.7

Reviews

1 / 20
6.0
Good

Henry,May 2026

PRG - CPH

The flights were fine. However, on 7 May on the way to Prague in the Copenhagen terminal we asked SAS to provide assistance, and were assured we would have it, when we arrived from Prague to Copenhagen on 11 May so we wouldn't have to walk the long distance between the arrival gate and the departure-to-Newark gate. Assistance never showed up. Because of that we had to rush with great difficulty across the airport by foot. Luckily we were just in time to board our flight to Newark.
British Airways
6.7
Okay
7,981 reviews
Scandinavian Airlines
7.4
Good
1,778 reviews
Check prices

Crew

8.0

Boarding

7.7

Comfort

7.3

Overall

7.4

Food

6.7

Entertainment

6.7

Reviews

1 / 20
6.0
Good

Henry,May 2026

PRG - CPH

The flights were fine. However, on 7 May on the way to Prague in the Copenhagen terminal we asked SAS to provide assistance, and were assured we would have it, when we arrived from Prague to Copenhagen on 11 May so we wouldn't have to walk the long distance between the arrival gate and the departure-to-Newark gate. Assistance never showed up. Because of that we had to rush with great difficulty across the airport by foot. Luckily we were just in time to board our flight to Newark.

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?

    This flight path from Dublin to Seattle/Tacoma Intl was viewed by 49 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Dublin to Seattle?

    For as low as £468, Finnair can have you in Seattle from Dublin in 21h 10m. There are 4523 mi between Dublin and Seattle. Both multi-stop and direct flights can be found to your destination and back.

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

    According to our current data, Scandinavian Airlines (£322), Icelandair (£346), and British Airways (£370) offers the cheapest pricing from Dublin to Seattle. You may be able to fly from Dublin to Seattle for 40% less than the average price by searching for these airlines.

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

    Consider American Airlines (74%), Aer Lingus (74%) or Iberia (74%) 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 £571, our data indicates the cheapest price to be £452. The most popular route (Dublin - Seattle/Tacoma Intl), is priced around £480.

  • 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, April is the cheapest month in which you can book a flight from Dublin to Seattle (average of £452). Flying from Dublin to Seattle in July is currently the most expensive (average of £769). 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

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 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 16 May 2026.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest£322Average£419FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
IcelandairCheapest£346Average£523FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
British AirwaysCheapest£370Average£415FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Aer LingusCheapest£399Average£568FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
American AirlinesCheapest£544Average£672FlexibilityNo 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!

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.