Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from Dublin to Seattle from £284

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 13/5. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — SEA
2 May — 9 May1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Dublin to Seattle/Tacoma Intl are usually found in February or September, booked 58 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 2 April 2026.

Tue 1/914:15
DUB
-
SEA
1 stop14h 25m
Icelandair
Tue 22/915:40
SEA
-
DUB
1 stop11h 25m
Icelandair
Deal found 1/4£404
Wed 22/412:15
DUB
-
SEA
1 stop13h 40m
Icelandair
Mon 4/515:40
SEA
-
DUB
1 stop13h 35m
Icelandair
Deal found 29/3£412
Thu 3/914:15
DUB
-
SEA
1 stop14h 25m
Icelandair
Wed 23/915:40
SEA
-
DUB
1 stop13h 35m
Icelandair
Deal found 30/3£418
Mon 18/508:30
DUB
-
SEA
1 stop17h 55m
British Airways
Thu 28/520:20
SEA
-
DUB
1 stop15h 00m
British Airways
Deal found 31/3£444
Wed 13/515:25
DUB
-
SEA
Nonstop9h 45m
Aer Lingus
Wed 20/519:10
SEA
-
DUB
Nonstop9h 10m
Aer Lingus
Deal found 29/3£445
Sun 10/520:30
DUB
-
SEA
1 stop23h 05m
British Airways
Tue 19/513:30
SEA
-
DUB
1 stop19h 30m
British Airways
Deal found 30/3£445
Tue 12/508:35
DUB
-
SEA
2 stops21h 54m
British Airways
Tue 19/513:30
SEA
-
DUB
1 stop19h 30m
British Airways
Deal found 30/3£449
Fri 22/511:10
DUB
-
SEA
2 stops34h 35m
Scandinavian Airlines
Sat 30/515:55
SEA
-
DUB
2 stops34h 30m
Scandinavian Airlines
Deal found 29/3£454
Sat 25/405:55
DUB
-
SEA
1 stop13h 50m
KLM
Tue 5/512:00
SEA
-
DUB
1 stop13h 15m
KLM
Deal found 29/3£454
Sat 25/415:25
DUB
-
SEA
Nonstop9h 45m
Aer Lingus
Tue 5/519:10
SEA
-
DUB
Nonstop9h 05m
Aer Lingus
Deal found 29/3£455
Thu 21/519:50
DUB
-
SEA
2 stops25h 55m
Scandinavian Airlines
Sat 30/515:55
SEA
-
DUB
2 stops34h 30m
Scandinavian Airlines
Deal found 2/4£457
Fri 24/412:40
DUB
-
SEA
2 stops17h 58m
American Airlines
Tue 5/510:25
SEA
-
DUB
1 stop15h 20m
American Airlines
Deal found 29/3£458

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 2 April 2026.

Round-trip from

£404

One-way from

£284

Popular in

July

Cheapest in

February

Average price

£494

Good round-trip deal

£416 or less
Icelandair
  • Icelandair
  • 1/9-22/9
  • 2 total stops
  • 25h 50m total
  • Dublin to Seattle
Search Deals
JetBlue
  • JetBlue
  • 13/5
  • 1 total stop
  • 18h 01m total
  • Dublin to Seattle
Search Deals
Highest demand for flights based on searches. 19% potential increase in price (£101 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£14 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 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 2 April 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

Fri 15/5

05:55-19:05

2 stops21h 10m

Seattle/Tacoma Intl

Mon 8/6

13:30-15:25

1 stop17h 55m

£469

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Mon 18/5

05:55-11:42

1 stop13h 47m

Seattle/Tacoma Intl

Thu 28/5

09:30-09:15

1 stop15h 45m

£469

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Mon 18/5

05:55-19:05

2 stops21h 10m

Seattle/Tacoma Intl

Thu 28/5

07:30-10:25

2 stops18h 55m

£471

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Mon 7/9

14:15-11:45

1 stop29h 30m

Seattle/Tacoma Intl

Mon 28/9

19:00-11:05

1 stop32h 05m

£526

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Tue 1/9

19:05-22:25

2 stops35h 20m

Seattle/Tacoma Intl

Tue 22/9

15:55-10:25

2 stops34h 30m

£536
Fastest return journey

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Mon 31/8

14:15-20:40

1 stop14h 25m

Seattle/Tacoma Intl

Mon 21/9

15:40-13:15

1 stop13h 35m

£553

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Tue 12/5

05:55-16:37

2 stops18h 42m

Seattle/Tacoma Intl

Tue 19/5

07:30-10:25

2 stops18h 55m

£582

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Mon 7/9

19:50-13:45

2 stops25h 55m

Seattle/Tacoma Intl

Mon 28/9

09:50-18:20

2 stops24h 30m

£589

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Mon 31/8

12:40-13:45

1 stop33h 05m

Seattle/Tacoma Intl

Mon 21/9

14:30-18:20

2 stops19h 50m

£620
Cheapest one-way

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Wed 13/5

11:30-21:31

1 stop18h 01m

£284

Flights are sorted by cheapest return flights first.

Deals found on 30/3

Showing 1-10 of 17 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?

Use this chart to determine the optimal time to book a return flight from Dublin to Seattle. Price data was last updated on 2 April 2026.

Booking 58 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 £592). 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 2 April 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 2 April 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
7.3
Good
1,737 reviews
Check prices

Overall

7.3

Food

6.7

Comfort

7.3

Boarding

7.6

Entertainment

6.7

Crew

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

CPH - ORD

The flight was smooth for the most part. Please remove those extra pillows on the headrest of the chair. They make your neck hurt by pushing your head forward. We flew on two other planes that did not have that feature and the seats were very comfortable. The crew members were very nice, and the pizza twists were really good.
Scandinavian Airlines
7.3
Good
1,737 reviews
Scandinavian Airlines
7.3
Good
1,737 reviews
Check prices

Overall

7.3

Food

6.7

Comfort

7.3

Boarding

7.6

Entertainment

6.7

Crew

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

CPH - ORD

The flight was smooth for the most part. Please remove those extra pillows on the headrest of the chair. They make your neck hurt by pushing your head forward. We flew on two other planes that did not have that feature and the seats were very comfortable. The crew members were very nice, and the pizza twists were really good.
Aer Lingus
7.2
Good
1,495 reviews
Scandinavian Airlines
7.3
Good
1,737 reviews
Check prices

Overall

7.3

Food

6.7

Comfort

7.3

Boarding

7.6

Entertainment

6.7

Crew

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

CPH - ORD

The flight was smooth for the most part. Please remove those extra pillows on the headrest of the chair. They make your neck hurt by pushing your head forward. We flew on two other planes that did not have that feature and the seats were very comfortable. The crew members were very nice, and the pizza twists were really good.
American Airlines
7.1
Good
11,550 reviews
Scandinavian Airlines
7.3
Good
1,737 reviews
Check prices

Overall

7.3

Food

6.7

Comfort

7.3

Boarding

7.6

Entertainment

6.7

Crew

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

CPH - ORD

The flight was smooth for the most part. Please remove those extra pillows on the headrest of the chair. They make your neck hurt by pushing your head forward. We flew on two other planes that did not have that feature and the seats were very comfortable. The crew members were very nice, and the pizza twists were really good.
Icelandair
7.0
Good
630 reviews
Scandinavian Airlines
7.3
Good
1,737 reviews
Check prices

Overall

7.3

Food

6.7

Comfort

7.3

Boarding

7.6

Entertainment

6.7

Crew

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

CPH - ORD

The flight was smooth for the most part. Please remove those extra pillows on the headrest of the chair. They make your neck hurt by pushing your head forward. We flew on two other planes that did not have that feature and the seats were very comfortable. The crew members were very nice, and the pizza twists were really good.
British Airways
6.7
Okay
7,841 reviews
Scandinavian Airlines
7.3
Good
1,737 reviews
Check prices

Overall

7.3

Food

6.7

Comfort

7.3

Boarding

7.6

Entertainment

6.7

Crew

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

CPH - ORD

The flight was smooth for the most part. Please remove those extra pillows on the headrest of the chair. They make your neck hurt by pushing your head forward. We flew on two other planes that did not have that feature and the seats were very comfortable. The crew members were very nice, and the pizza twists were really good.

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 14h 25m 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 60 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 £469, Delta can have you in Seattle from Dublin in 13h 47m. 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 (£323), British Airways (£372), and Icelandair (£372) 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 (81%), Aer Lingus (81%) or Iberia (81%) 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 £441, our data indicates the cheapest price to be £324. The most popular route (Dublin - Seattle/Tacoma Intl), is priced around £615.

  • 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 £592). 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 2 April 2026.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest£323Average£421FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
British AirwaysCheapest£372Average£431FlexibilityNo cancel feeOn-time70%
Search British Airways flights
IcelandairCheapest£372Average£500FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Aer LingusCheapest£400Average£575FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
American AirlinesCheapest£546Average£675FlexibilityNo 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.