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Cheap flights from Dublin to Seattle from £391

This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight from Dublin to Seattle departing on 5/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap return flights

Scandinavian Airlines Logo
12:20 - 13:50DUB-SEA
33h 30m2 stops
Scandinavian Airlines Logo
16:20 - 10:55SEA-DUB
34h 35m2 stops
£391Scandinavian Airlines
Find Deal
Fri, 5 Sep - Sun, 21 Sep
Scandinavian Airlines Logo
19:05 - 13:50DUB-SEA
26h 45m1 stop
Scandinavian Airlines Logo
15:05 - 18:15SEA-DUB
19h 10m2 stops
£400Scandinavian Airlines
Find Deal
Thu, 28 Aug - Thu, 4 Sep
Scandinavian Airlines Logo
12:20 - 13:50DUB-SEA
33h 30m2 stops
Scandinavian Airlines Logo
15:05 - 18:15SEA-DUB
19h 10m2 stops
£422Scandinavian Airlines
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Thu, 28 Aug - Thu, 4 Sep
Icelandair Logo
14:15 - 20:40DUB-SEA
14h 25m1 stop
Icelandair Logo
15:45 - 11:05SEA-DUB
11h 20m1 stop
£452Icelandair
Find Deal
Sat, 13 Sep - Sat, 20 Sep
Icelandair Logo
11:30 - 17:00DUB-SEA
13h 30m1 stop
Icelandair Logo
14:35 - 10:15SEA-DUB
11h 40m1 stop
£467Icelandair
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Wed, 12 Nov - Sun, 16 Nov
Aer Lingus Logo
06:30 - 11:35DUB-SEA
13h 05m1 stop
Aer Lingus Logo
19:35 - 12:40SEA-DUB
9h 05mdirect
£479Aer Lingus
Find Deal
Mon, 15 Sep - Mon, 22 Sep
Logo
05:55 - 11:50DUB-SEA
13h 55m1 stop
Logo
13:55 - 15:45SEA-DUB
17h 50m1 stop
£506
Find Deal
Fri, 7 Nov - Wed, 12 Nov
British Airways Logo
20:15 - 11:35DUB-SEA
23h 20m1 stop
British Airways Logo
13:30 - 07:40SEA-DUB
34h 10m1 stop
£511British Airways
Find Deal
Thu, 11 Sep - Thu, 25 Sep
Logo
09:45 - 12:59DUB-SEA
35h 14m3 stops
Logo
14:55 - 11:30SEA-DUB
36h 35m3 stops
£522
Find Deal
Mon, 15 Sep - Mon, 22 Sep
Aer Lingus Logo
16:10 - 17:50DUB-SEA
9h 40mdirect
Aer Lingus Logo
06:05 - 05:10SEA-DUB
15h 05m1 stop
£541Aer Lingus
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Wed, 3 Sep - Wed, 10 Sep

Delta flights from Dublin to Seattle

Our best Delta deals on Dublin to Seattle flight tickets
Delta
15 Sept
DUB11:10Dublin
12h 55m
1 stop
SEA16:05Seattle/Tacoma Intl
22 Sept
SEA07:25Seattle/Tacoma Intl
19h 00m
2 stops
DUB10:25Dublin
£510
Find similar
Delta
8 Sept
DUB05:55Dublin
13h 50m
1 stop
SEA11:45Seattle/Tacoma Intl
23 Sept
SEA13:30Seattle/Tacoma Intl
17h 30m
1 stop
DUB15:00Dublin
£512
Find similar
Delta
7 Nov
DUB05:55Dublin
13h 55m
1 stop
SEA11:50Seattle/Tacoma Intl
12 Nov
SEA07:30Seattle/Tacoma Intl
21h 10m
2 stops
DUB12:40Dublin
£512
Find similar

Icelandair flights from Dublin to Seattle

Our best Icelandair deals on Dublin to Seattle flight tickets
Icelandair
13 Sept
DUB14:15Dublin
14h 25m
1 stop
SEA20:40Seattle/Tacoma Intl
20 Sept
SEA15:45Seattle/Tacoma Intl
11h 20m
1 stop
DUB11:05Dublin
£452
Find similar
Icelandair
12 Nov
DUB11:30Dublin
13h 30m
1 stop
SEA17:00Seattle/Tacoma Intl
16 Nov
SEA14:35Seattle/Tacoma Intl
11h 40m
1 stop
DUB10:15Dublin
£467
Find similar
Icelandair
7 Nov
DUB11:30Dublin
13h 30m
1 stop
SEA17:00Seattle/Tacoma Intl
10 Nov
SEA14:35Seattle/Tacoma Intl
11h 40m
1 stop
DUB10:15Dublin
£469
Find similar

momondo 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, momondo users made 279,928 searches. Data last updated 1 August 2025.
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

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Fri 5/9

12:20-13:50

2 stops33h 30m

Seattle/Tacoma Intl

Sun 21/9

16:20-10:55

2 stops34h 35m

£391

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Thu 28/8

19:05-13:50

1 stop26h 45m

Seattle/Tacoma Intl

Thu 4/9

15:05-18:15

2 stops19h 10m

£400

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Thu 28/8

12:20-13:50

2 stops33h 30m

Seattle/Tacoma Intl

Thu 4/9

15:05-18:15

2 stops19h 10m

£422

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Sat 13/9

14:15-20:40

1 stop14h 25m

Seattle/Tacoma Intl

Sat 20/9

15:45-11:05

1 stop11h 20m

£452

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Wed 12/11

11:30-17:00

1 stop13h 30m

Seattle/Tacoma Intl

Sun 16/11

14:35-10:15

1 stop11h 40m

£467

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Mon 15/9

06:30-11:35

1 stop13h 05m

Seattle/Tacoma Intl

Mon 22/9

19:35-12:40

Nonstop9h 05m

£479

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Fri 7/11

05:55-11:50

1 stop13h 55m

Seattle/Tacoma Intl

Wed 12/11

13:55-15:45

1 stop17h 50m

£506

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Thu 11/9

20:15-11:35

1 stop23h 20m

Seattle/Tacoma Intl

Thu 25/9

13:30-07:40

1 stop34h 10m

£511

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Mon 15/9

09:45-12:59

3 stops35h 14m

Seattle/Tacoma Intl

Mon 22/9

14:55-11:30

3 stops36h 35m

£522

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Wed 3/9

16:10-17:50

Nonstop9h 40m

Seattle/Tacoma Intl

Wed 10/9

06:05-05:10

1 stop15h 05m

£541

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Seattle from

How to get the cheapest flight ticket from Dublin to Seattle

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Dublin and Seattle?

What is the cheapest month to fly to Seattle?

The cheapest month to fly to Seattle from Dublin is in February. Flight prices, which tend to average around £459, are often lower during this time because this is during the off-season. The month of January is another great option to travel to Seattle, with average flight prices from Dublin averaging around £478.

What is the cheapest day to depart on your flight to Seattle?

According to our data, Tuesday is the cheapest day to fly to Seattle from Dublin. The lowest ticket price found for a Tuesday departure recently was £577. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Be sure to avoid booking your departure on a Saturday as prices are generally higher than usual. According to our data, the average ticket price to Seattle on Saturday is £729.

What is the cheapest time of day to depart on your flight to Seattle?

According to our data, the cheapest time of day to fly to Seattle is in the morning. momondo users have found flights departing from Dublin to Seattle in the morning for as low as £542. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the afternoon are often more expensive, with an average ticket price of £621.

What is the cheapest Dublin to Seattle/Tacoma Intl flight route?

Fly from Dublin to Seattle/Tacoma Intl for the best Dublin - Seattle/Tacoma Intl flight prices

How far in advance should I book a flight to Seattle?

You are more likely to see cheaper flights to Seattle from Dublin when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around £554 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Dublin for as low as £520 on momondo.

What cabin class options are available on Dublin to Seattle/Tacoma Intl flights?

There are 2 cabin classes available to choose from on Dublin to Seattle/Tacoma Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Dublin to Seattle flights?

You could potentially save up to 50% on your flight if you consider stops on a Dublin to Seattle flight.

How have Dublin to Seattle flight prices changed over time?

As of August 2025, prices for Dublin to Seattle flights are approximately 19% more expensive when compared to flights at the same time last year.

When to book flights from Dublin to Seattle

Are you open to changing your travel dates? Check out the ideal times to fly from Dublin to Seattle according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Dublin to Seattle (DUB to SEA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Dublin to Seattle

Best price found

£413

Fastest flight time

9h 40m

Direct flights

Every day

Airports in Seattle

1 airport
The best one-way flight to Seattle from Dublin in the past 72 hours is £413. The best return flight deal from Dublin to Seattle found on momondo in the last 72 hours is £391.
The fastest flight from Dublin to Seattle takes 9h 40m
Direct flights go from Dublin to Seattle every day.
There is 1 airport near Seattle: Seattle/Tacoma Intl (SEA)
Search flight deals

  • How far is Dublin to Seattle/Tacoma Intl by plane?

    The distance between Dublin and Seattle/Tacoma Intl is about 4518.4 mi. By plane, this route typically takes 9h 40m.

  • When did momondo last update prices for flights from Dublin Airport to Seattle/Tacoma Intl Airport?

    Prices for flights from Dublin Airport to Seattle/Tacoma Intl Airport were last updated today.

  • How many operators does momondo search for flights from Dublin Airport to Seattle/Tacoma Intl Airport?

  • How old do you have to be to fly from Dublin Airport to Seattle/Tacoma Intl Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Dublin Airport to Seattle/Tacoma Intl Airport.

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The travel and health documents required for your trip to Seattle/Tacoma Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Seattle/Tacoma Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from Dublin to Seattle?

  • What is the most popular airline from Dublin to Seattle?

Best airlines flying from Dublin to Seattle

Compare and see reviews for airlines that fly from Dublin to Seattle with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom £354Free CancellationRating
6.6
7,222 reviews
Search British Airways flights
IcelandairPriceFrom £388Free CancellationRating
7.0
520 reviews
Search Icelandair flights
Aer LingusPriceFrom £436Free CancellationRating
7.1
1,192 reviews
Search Aer Lingus flights
American AirlinesPriceFrom £506Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights

  • American Airlines Flights From Dublin to Seattle

    American Airlines is one of the most popular airlines flying from Dublin to Seattle, operating 7 flights/week on average for this route. A good American Airlines flight deal for Dublin to Seattle starts from £670 round-trip, up to an average price of £897. Our users have rated American Airlines at 7.2/10.

  • Aer Lingus Flights From Dublin to Seattle

    Another popular option for Dublin to Seattle flights is Aer Lingus (7.1/10, 1,192 ratings). Aer Lingus flies from Dublin to Seattle around 6 times per week, with deals starting from £577 round-trip and rising to an average price of around £787.

Travelling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Kent
SeaTac
Fife
Tukwila
Renton

Why use momondo?

Why should I use momondo to find a flight deal from Dublin to Seattle?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Dublin to Seattle for you.

Can I find flights from Dublin to Seattle with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Seattle from Dublin with this policy.

How can momondo help me find flights from Dublin to Seattle?

momondo helps you find the best flight between Dublin and Seattle by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Dublin to Seattle right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Dublin to Seattle flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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