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Cheap flights from Ireland to Seattle from £330

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ireland to Seattle departing on 20/10. 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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0 bags

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Find the cheapest flights from Ireland to Seattle

Recent return flight deals from Ireland to Seattle

Scandinavian Airlines Logo
19:05 - 14:00DUB-SEA
26h 55m1 stop
Scandinavian Airlines Logo
16:20 - 11:50SEA-DUB
35h 30m1 stop
£345Scandinavian Airlines
Find Deal
Thu, 9 Oct - Wed, 15 Oct
Scandinavian Airlines Logo
19:05 - 14:00DUB-SEA
26h 55m1 stop
Scandinavian Airlines Logo
16:20 - 11:50SEA-DUB
35h 30m1 stop
£345Scandinavian Airlines
Find Deal
Thu, 25 Sep - Sun, 5 Oct
Icelandair Logo
11:30 - 17:00DUB-SEA
13h 30m1 stop
Icelandair Logo
14:35 - 10:15SEA-DUB
11h 40m1 stop
£372Icelandair
Find Deal
Wed, 26 Nov - Sun, 30 Nov
Aer Lingus Logo
16:10 - 17:50DUB-SEA
9h 40mdirect
Aer Lingus Logo
19:35 - 12:35SEA-DUB
9h 00mdirect
£396Aer Lingus
Find Deal
Thu, 25 Sep - Sat, 4 Oct
American Airlines Logo
15:10 - 17:55DUB-SEA
33h 45m1 stop
American Airlines Logo
13:35 - 14:20SEA-DUB
16h 45m1 stop
£403American Airlines
Find Deal
Wed, 29 Oct - Fri, 7 Nov
Aer Lingus Logo
16:10 - 17:50DUB-SEA
9h 40mdirect
Aer Lingus Logo
19:35 - 12:35SEA-DUB
9h 00mdirect
£403Aer Lingus
Find Deal
Thu, 2 Oct - Wed, 15 Oct
American Airlines Logo
12:45 - 18:20DUB-SEA
13h 35m1 stop
American Airlines Logo
11:42 - 15:05SEA-DUB
19h 23m2 stops
£406American Airlines
Find Deal
Fri, 24 Oct - Fri, 7 Nov
British Airways Logo
20:40 - 12:30DUB-SEA
22h 50m1 stop
British Airways Logo
18:50 - 07:55SEA-DUB
29h 05m1 stop
£406British Airways
Find Deal
Mon, 27 Oct - Wed, 5 Nov
British Airways Logo
08:50 - 23:07DUB-SEA
22h 17m2 stops
British Airways Logo
13:48 - 16:50SEA-DUB
20h 02m2 stops
£410British Airways
Find Deal
Thu, 19 Feb - Sun, 8 Mar
Icelandair Logo
12:15 - 20:40DUB-SEA
16h 25m1 stop
Icelandair Logo
15:45 - 11:05SEA-DUB
11h 20m1 stop
£444Icelandair
Find Deal
Sun, 12 Oct - Sat, 18 Oct

United Airlines flights from Ireland to Seattle

Our best United Airlines deals on Ireland to Seattle flight tickets
United Airlines
11 Sept
DUB09:20Dublin
18h 11m
1 stop
SEA19:31Seattle/Tacoma Intl
27 Sept
SEA13:12Seattle/Tacoma Intl
13h 08m
1 stop
DUB10:20Dublin
£414
Find similar
United Airlines
5 Oct
DUB09:20Dublin
21h 11m
1 stop
SEA22:31Seattle/Tacoma Intl
17 Oct
SEA07:00Seattle/Tacoma Intl
16h 10m
2 stops
DUB07:10Dublin
£415
Find similar
United Airlines
17 Sept
DUB09:20Dublin
20h 56m
1 stop
SEA22:16Seattle/Tacoma Intl
27 Sept
SEA08:00Seattle/Tacoma Intl
18h 20m
1 stop
DUB10:20Dublin
£415
Find similar

Lufthansa flights from Ireland to Seattle

Our best Lufthansa deals on Ireland to Seattle flight tickets
Lufthansa
16 Sept
DUB17:40Dublin
26h 15m
1 stop
SEA11:55Seattle/Tacoma Intl
1 Oct
SEA08:00Seattle/Tacoma Intl
18h 20m
1 stop
DUB10:20Dublin
£398
Find similar
Lufthansa
18 Oct
DUB05:55Dublin
14h 00m
1 stop
SEA11:55Seattle/Tacoma Intl
25 Oct
SEA08:00Seattle/Tacoma Intl
19h 20m
1 stop
DUB11:20Dublin
£401
Find similar
Lufthansa
26 Sept
DUB05:55Dublin
14h 00m
1 stop
SEA11:55Seattle/Tacoma Intl
4 Oct
SEA10:00Seattle/Tacoma Intl
13h 45m
1 stop
DUB07:45Dublin
£407
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from Ireland 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 5 September 2025.
Use the filters below to find and compare flights from Ireland to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Thu 9/10

19:05-14:00

1 stop26h 55m

Seattle/Tacoma Intl

Wed 15/10

16:20-11:50

1 stop35h 30m

£345

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Thu 25/9

19:05-14:00

1 stop26h 55m

Seattle/Tacoma Intl

Sun 5/10

16:20-11:50

1 stop35h 30m

£345

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Wed 26/11

11:30-17:00

1 stop13h 30m

Seattle/Tacoma Intl

Sun 30/11

14:35-10:15

1 stop11h 40m

£372

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Thu 25/9

16:10-17:50

Nonstop9h 40m

Seattle/Tacoma Intl

Sat 4/10

19:35-12:35

Nonstop9h 00m

£396

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Wed 29/10

15:10-17:55

1 stop33h 45m

Seattle/Tacoma Intl

Fri 7/11

13:35-14:20

1 stop16h 45m

£403

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Thu 2/10

16:10-17:50

Nonstop9h 40m

Seattle/Tacoma Intl

Wed 15/10

19:35-12:35

Nonstop9h 00m

£403

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Fri 24/10

12:45-18:20

1 stop13h 35m

Seattle/Tacoma Intl

Fri 7/11

11:42-15:05

2 stops19h 23m

£406

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Mon 27/10

20:40-12:30

1 stop22h 50m

Seattle/Tacoma Intl

Wed 5/11

18:50-07:55

1 stop29h 05m

£406

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Thu 19/2

08:50-23:07

2 stops22h 17m

Seattle/Tacoma Intl

Sun 8/3

13:48-16:50

2 stops20h 02m

£410

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Sun 12/10

12:15-20:40

1 stop16h 25m

Seattle/Tacoma Intl

Sat 18/10

15:45-11:05

1 stop11h 20m

£444

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 Ireland 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 cheapest month to fly to Seattle?

The cheapest month to fly to Seattle from Ireland is in February. Flight prices, which tend to average around £453, 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 Ireland averaging around £471.

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 Ireland. The lowest ticket price found for a Tuesday departure recently was £569. 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 £742.

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 Ireland to Seattle in the morning for as low as £534. 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 £612.

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

Fly from Dublin to Seattle/Tacoma Intl for the best Ireland - 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 Ireland when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around £542 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 Ireland for as low as £447 on momondo.

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

There are 2 cabin classes available to choose from on Ireland 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 Ireland to Seattle flights?

You could potentially save up to 26% on your flight if you consider stops on a Ireland to Seattle flight.

Cheap Ireland to Seattle flight deals and tips

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

Best price found

£396

Fastest flight time

9h 40m

Direct flights

Every day

Airports in Seattle

1 airport
The best flight deal from Ireland to Seattle found on momondo in the last 72 hours is £396
The fastest flight from Ireland to Seattle takes 9h 40m
Direct flights go from Ireland to Seattle every day.
There is 1 airport near Seattle: Seattle/Tacoma Intl (SEA)
Search flight deals

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

    Prices for flights from Ireland to Seattle/Tacoma Intl Airport are updated daily.

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Ireland to Seattle/Tacoma Intl Airport.

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

    The required travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

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

Best airlines flying from Ireland to Seattle

Compare and see reviews for airlines that fly from Ireland to Seattle with momondo
Airline
Rating
Free Cancellation
Price
Scandinavian AirlinesPriceFrom £320Free CancellationRating
7.4
1,482 reviews
Search Scandinavian Airlines flights
British AirwaysPriceFrom £348Free CancellationRating
6.7
7,348 reviews
Search British Airways flights
Aer LingusPriceFrom £396Free CancellationRating
7.2
1,252 reviews
Search Aer Lingus flights
IcelandairPriceFrom £413Free CancellationRating
7.0
545 reviews
Search Icelandair flights
American AirlinesPriceFrom £499Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights

Travelling to a place near Seattle?

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

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Ireland to Seattle . Millions of users trust and use momondo every year so you are in good hands.

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

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

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

momondo provides multiple filters to help you find the best flight to Seattle from Ireland. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Yes. momondo can track prices for Ireland 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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