Cheap flights from Ireland to Seattle from €298

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 28/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Ireland to Seattle

Recent return flight deals from Ireland to Seattle

Enter your travel dates to find the best prices.
Multiple Airlines Logo
09:30 - 19:36
DUB
-
SEA
18h 06m
1 stop
Multiple Airlines Logo
13:35 - 12:05
SEA
-
DUB
14h 30m
1 stop
€392Multiple Airlines
Thu, 9 Apr - Thu, 16 Apr
Multiple Airlines Logo
09:30 - 22:38
DUB
-
SEA
21h 08m
1 stop
Multiple Airlines Logo
20:20 - 18:40
SEA
-
DUB
14h 20m
1 stop
€393Multiple Airlines
Fri, 15 May - Mon, 8 Jun
Multiple Airlines Logo
09:30 - 22:38
DUB
-
SEA
21h 08m
1 stop
Multiple Airlines Logo
20:20 - 18:40
SEA
-
DUB
14h 20m
1 stop
€394Multiple Airlines
Fri, 15 May - Mon, 8 Jun
Finnair Logo
09:30 - 19:29
DUB
-
SEA
17h 59m
1 stop
Finnair Logo
06:44 - 09:45
SEA
-
DUB
19h 01m
1 stop
€396Finnair
Mon, 30 Mar - Mon, 6 Apr
Finnair Logo
09:30 - 19:36
DUB
-
SEA
18h 06m
1 stop
Finnair Logo
07:09 - 09:45
SEA
-
DUB
18h 36m
1 stop
€397Finnair
Wed, 22 Apr - Sun, 26 Apr
KLM Logo
06:00 - 11:40
ORK
-
SEA
13h 40m
1 stop
KLM Logo
08:00 - 10:45
SEA
-
ORK
18h 45m
2 stops
€446KLM
Thu, 26 Feb - Mon, 2 Mar
KLM Logo
06:00 - 20:00
ORK
-
SEA
22h 00m
2 stops
KLM Logo
08:00 - 10:45
SEA
-
ORK
18h 45m
2 stops
€453KLM
Thu, 26 Feb - Mon, 2 Mar
British Airways Logo
07:50 - 00:24
SNN
-
SEA
24h 34m
2 stops
British Airways Logo
07:15 - 16:45
SEA
-
SNN
25h 30m
2 stops
€559British Airways
Thu, 26 Feb - Mon, 2 Mar
British Airways Logo
20:05 - 21:15
SNN
-
SEA
33h 10m
2 stops
British Airways Logo
19:05 - 16:45
SEA
-
SNN
37h 40m
2 stops
€590British Airways
Fri, 27 Feb - Fri, 6 Mar
Aer Lingus Logo
20:05 - 11:30
SNN
-
SEA
23h 25m
1 stop
Aer Lingus Logo
18:50 - 15:45
SEA
-
SNN
12h 55m
1 stop
€824Aer Lingus
Fri, 27 Feb - Fri, 6 Mar

Finnair flights from Ireland to Seattle

Our best Finnair deals on Ireland to Seattle flight tickets
Finnair
30 Mar
DUB09:30Dublin
17h 59m
1 stop
SEA19:29Seattle/Tacoma Intl
6 Apr
SEA06:44Seattle/Tacoma Intl
19h 01m
1 stop
DUB09:45Dublin
€396
Finnair
22 Apr
DUB09:30Dublin
18h 06m
1 stop
SEA19:36Seattle/Tacoma Intl
26 Apr
SEA07:09Seattle/Tacoma Intl
18h 36m
1 stop
DUB09:45Dublin
€397
Finnair
18 May
DUB09:30Dublin
23h 00m
1 stop
SEA00:30Seattle/Tacoma Intl
28 May
SEA13:46Seattle/Tacoma Intl
14h 04m
1 stop
DUB11:50Dublin
€398

KLM flights from Ireland to Seattle

Our best KLM deals on Ireland to Seattle flight tickets
KLM
23 Feb
DUB17:15Dublin
26h 25m
1 stop
SEA11:40Seattle/Tacoma Intl
8 Mar
SEA11:50Seattle/Tacoma Intl
12h 55m
1 stop
DUB07:45Dublin
€441
KLM
26 Feb
ORK06:00Cork
13h 40m
1 stop
SEA11:40Seattle/Tacoma Intl
2 Mar
SEA08:00Seattle/Tacoma Intl
18h 45m
2 stops
ORK10:45Cork
€446
KLM
26 Feb
ORK06:00Cork
22h 00m
2 stops
SEA20:00Seattle/Tacoma Intl
2 Mar
SEA08:00Seattle/Tacoma Intl
18h 45m
2 stops
ORK10:45Cork
€453

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 13,528 searches. Data last updated 13 February 2026.
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 9/4

09:30-19:36

1 stop18h 06m

Seattle/Tacoma Intl

Thu 16/4

13:35-12:05

1 stop14h 30m

€392

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Fri 15/5

09:30-22:38

1 stop21h 08m

Seattle/Tacoma Intl

Mon 8/6

20:20-18:40

1 stop14h 20m

€393

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Fri 15/5

09:30-22:38

1 stop21h 08m

Seattle/Tacoma Intl

Mon 8/6

20:20-18:40

1 stop14h 20m

€394

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Mon 30/3

09:30-19:29

1 stop17h 59m

Seattle/Tacoma Intl

Mon 6/4

06:44-09:45

1 stop19h 01m

€396

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Wed 22/4

09:30-19:36

1 stop18h 06m

Seattle/Tacoma Intl

Sun 26/4

07:09-09:45

1 stop18h 36m

€397

CorkSeattle

ORK - SEA

ORKSEA

Cork

Thu 26/2

06:00-11:40

1 stop13h 40m

Seattle/Tacoma Intl

Mon 2/3

08:00-10:45

2 stops18h 45m

€446

CorkSeattle

ORK - SEA

ORKSEA

Cork

Thu 26/2

06:00-20:00

2 stops22h 00m

Seattle/Tacoma Intl

Mon 2/3

08:00-10:45

2 stops18h 45m

€453

ShannonSeattle

SNN - SEA

SNNSEA

Shannon

Thu 26/2

07:50-00:24

2 stops24h 34m

Seattle/Tacoma Intl

Mon 2/3

07:15-16:45

2 stops25h 30m

€559

ShannonSeattle

SNN - SEA

SNNSEA

Shannon

Fri 27/2

20:05-21:15

2 stops33h 10m

Seattle/Tacoma Intl

Fri 6/3

19:05-16:45

2 stops37h 40m

€590

ShannonSeattle

SNN - SEA

SNNSEA

Shannon

Fri 27/2

20:05-11:30

1 stop23h 25m

Seattle/Tacoma Intl

Fri 6/3

18:50-15:45

1 stop12h 55m

€824

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?

If you’re not able to fly to Seattle in November, then September is your next best option. Flight prices from Ireland to Seattle during September average around €554.

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

Our data shows that Thursday is the least expensive day to fly to Seattle. Tickets to fly out on this day can be as low as €628. Flights from Ireland to Seattle on a Tuesday will generally be more expensive and average around €816. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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 €615 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 €525 on momondo.

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

There is only 1 cabin class 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 16% 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

€471

Fastest flight time

9h 45m

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 €471
The fastest flight from Ireland to Seattle takes 9h 45m
Direct flights go from Ireland to Seattle every day.
There is 1 airport in Seattle. From Ireland there are direct flights to Seattle/Tacoma Intl (SEA).
  • 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 were last updated today.

  • 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 offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and stopovers. It is recommended that you verify 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 necessary travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted 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
IcelandairPriceFrom €377Free CancellationRating
7.1
614 reviews
Search Icelandair flights
British AirwaysPriceFrom €399Free CancellationRating
6.7
7,738 reviews
Search British Airways flights
Aer LingusPriceFrom €464Free CancellationRating
7.2
1,450 reviews
Search Aer Lingus flights

Travelling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Aberdeen
Lynnwood

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Ireland to Seattle. momondo saves you time and could save you money on your trip.

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

momondo does allow users to show only those flights to Seattle from Ireland which offer a flexible booking policy as well as other useful filters and features.

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

Once all potential Ireland to Seattle flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Yes momondo offers price alerts on flights to Seattle from Ireland. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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Sun 15/3
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