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Cheap flights from Seattle to Ireland from $211

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Ireland departing on 10/18. 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 Seattle to Ireland

Cheap round-trip flights

Scandinavian Airlines Logo
4:20 pm - 6:15 pmSEA-DUB
17h 55m1 stop
Scandinavian Airlines Logo
12:40 pm - 2:00 pmDUB-SEA
33h 20m1 stop
$408Scandinavian Airlines
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Sun, Oct 5 - Tue, Oct 21
Aer Lingus Logo
8:05 pm - 1:10 pmSEA-DUB
9h 05mnonstop
Aer Lingus Logo
4:30 pm - 6:20 pmDUB-SEA
9h 50mnonstop
$409Aer Lingus
Find Deal
Wed, Nov 5 - Fri, Nov 14
British Airways Logo
6:50 pm - 5:00 pmSEA-DUB
14h 10m1 stop
British Airways Logo
8:50 am - 4:55 pmDUB-SEA
16h 05m1 stop
$427British Airways
Find Deal
Tue, Nov 11 - Fri, Nov 21
British Airways Logo
7:50 pm - 4:50 pmSEA-DUB
14h 00m1 stop
British Airways Logo
4:00 pm - 11:30 amDUB-SEA
27h 30m1 stop
$428British Airways
Find Deal
Sun, Oct 26 - Mon, Nov 3
Icelandair Logo
2:35 pm - 10:15 amSEA-DUB
11h 40m1 stop
Icelandair Logo
11:30 am - 5:00 pmDUB-SEA
13h 30m1 stop
$429Icelandair
Find Deal
Sat, Dec 6 - Sat, Dec 13
Icelandair Logo
2:35 pm - 10:15 amSEA-DUB
11h 40m1 stop
Icelandair Logo
11:30 am - 5:00 pmDUB-SEA
13h 30m1 stop
$431Icelandair
Find Deal
Fri, Jan 23 - Tue, Jan 27
United Airlines Logo
7:00 am - 8:10 amSEA-DUB
17h 10m1 stop
United Airlines Logo
9:00 am - 4:13 pmDUB-SEA
39h 13m2 stops
$455United Airlines
Find Deal
Tue, Jan 20 - Wed, Jan 28
United Airlines Logo
5:00 am - 9:55 amSEA-DUB
20h 55m2 stops
United Airlines Logo
9:00 am - 11:30 amDUB-SEA
34h 30m2 stops
$460United Airlines
Find Deal
Wed, Nov 19 - Wed, Nov 26
American Airlines Logo
6:50 pm - 9:00 pmSEA-ORK
18h 10m1 stop
American Airlines Logo
11:55 am - 11:30 amORK-SEA
31h 35m1 stop
$461American Airlines
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Mon, Nov 17 - Mon, Jan 12
American Airlines Logo
2:20 pm - 3:25 pmSEA-ORK
17h 05m2 stops
American Airlines Logo
11:55 am - 11:30 amORK-SEA
31h 35m1 stop
$465American Airlines
Find Deal
Mon, Nov 17 - Mon, Jan 12

Aer Lingus flights from Seattle to Ireland

Our best Aer Lingus deals on Seattle to Ireland flight tickets
Aer Lingus
Nov 5
SEA8:05 pmSeattle/Tacoma Intl
9h 05m
DUB1:10 pmDublin
Nov 14
DUB4:30 pmDublin
9h 50m
SEA6:20 pmSeattle/Tacoma Intl
$409
Find similar
Aer Lingus
Oct 25
SEA7:35 pmSeattle/Tacoma Intl
9h 00m
DUB11:35 amDublin
Nov 2
DUB4:30 pmDublin
9h 50m
SEA6:20 pmSeattle/Tacoma Intl
$433
Find similar
Aer Lingus
Nov 19
SEA8:05 pmSeattle/Tacoma Intl
9h 05m
DUB1:10 pmDublin
Nov 24
DUB4:30 pmDublin
9h 50m
SEA6:20 pmSeattle/Tacoma Intl
$456
Find similar

British Airways flights from Seattle to Ireland

Our best British Airways deals on Seattle to Ireland flight tickets
British Airways
Nov 11
SEA6:50 pmSeattle/Tacoma Intl
14h 10m
1 stop
DUB5:00 pmDublin
Nov 21
DUB8:50 amDublin
16h 05m
1 stop
SEA4:55 pmSeattle/Tacoma Intl
$427
Find similar
British Airways
Oct 26
SEA7:50 pmSeattle/Tacoma Intl
14h 00m
1 stop
DUB4:50 pmDublin
Nov 3
DUB4:00 pmDublin
27h 30m
1 stop
SEA11:30 amSeattle/Tacoma Intl
$428
Find similar
British Airways
Nov 11
SEA1:25 pmSeattle/Tacoma Intl
16h 55m
1 stop
DUB2:20 pmDublin
Dec 3
DUB8:50 amDublin
16h 05m
1 stop
SEA4:55 pmSeattle/Tacoma Intl
$434
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Ireland 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 832,500 searches. Data last updated August 17, 2025.
Use the filters below to find and compare flights from Seattle to Ireland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sun 10/5

4:20 pm-6:15 pm

1 stop17h 55m

Dublin

Tue 10/21

12:40 pm-2:00 pm

1 stop33h 20m

$408

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Wed 11/5

8:05 pm-1:10 pm

Nonstop9h 05m

Dublin

Fri 11/14

4:30 pm-6:20 pm

Nonstop9h 50m

$409

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Tue 11/11

6:50 pm-5:00 pm

1 stop14h 10m

Dublin

Fri 11/21

8:50 am-4:55 pm

1 stop16h 05m

$427

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sun 10/26

7:50 pm-4:50 pm

1 stop14h 00m

Dublin

Mon 11/3

4:00 pm-11:30 am

1 stop27h 30m

$428

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sat 12/6

2:35 pm-10:15 am

1 stop11h 40m

Dublin

Sat 12/13

11:30 am-5:00 pm

1 stop13h 30m

$429

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Fri 1/23

2:35 pm-10:15 am

1 stop11h 40m

Dublin

Tue 1/27

11:30 am-5:00 pm

1 stop13h 30m

$431

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Tue 1/20

7:00 am-8:10 am

1 stop17h 10m

Dublin

Wed 1/28

9:00 am-4:13 pm

2 stops39h 13m

$455

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Wed 11/19

5:00 am-9:55 am

2 stops20h 55m

Dublin

Wed 11/26

9:00 am-11:30 am

2 stops34h 30m

$460

SeattleCork

SEA - ORK

SEAORK

Seattle/Tacoma Intl

Mon 11/17

6:50 pm-9:00 pm

1 stop18h 10m

Cork

Mon 1/12

11:55 am-11:30 am

1 stop31h 35m

$461

SeattleCork

SEA - ORK

SEAORK

Seattle/Tacoma Intl

Mon 11/17

2:20 pm-3:25 pm

2 stops17h 05m

Cork

Mon 1/12

11:55 am-11:30 am

1 stop31h 35m

$465

Flights are sorted by cheapest round-trip flights first.

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

How to get the cheapest flight ticket from Seattle to Ireland

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 Ireland?

In general, January is the cheapest month to fly from Seattle to Ireland. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $438. If you aren’t able to travel to Ireland during the month of January, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $511.

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

The cheapest day to depart on your flight to Ireland is on a Wednesday when prices can be found for as low as $748. This is often the case because there is less demand to fly during this day of the week. Flights from Seattle to Ireland on a Saturday will generally be more expensive and average around $910. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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

According to our data, the cheapest time of day to fly to Ireland is at noon. momondo users have found flights departing from Seattle to Ireland at noon for as low as $610. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Ireland is in the afternoon when prices are around $894.

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

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

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

You are more likely to see cheaper flights to Ireland from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Ireland for around $658 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ireland from Seattle for as low as $570 on momondo.

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

There are 3 cabin classes available to choose from on Seattle/Tacoma Intl to Ireland 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 Seattle to Ireland flights?

You could potentially save up to 55% on your flight if you consider stops on a Seattle to Ireland flight.

Cheap Seattle to Ireland flight deals and tips

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

Best Price Found

$211

Fastest flight time

9h 00m

Direct flights

Every day

Airports in Ireland

3 airports
The best one-way flight to Ireland from Seattle in the past 72 hours is $211. The best round-trip flight deal from Seattle to Ireland found on momondo in the last 72 hours is $408.
The fastest flight from Seattle to Ireland takes 9h 00m
Direct flights go from Seattle to Ireland every day.
There are 3 airports near Ireland: Dublin (DUB), Shannon (SNN), Cork (ORK)
Search flight deals

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

    Prices for flights from Seattle/Tacoma Intl Airport to Ireland are refreshed on a daily basis.

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

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

    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 Seattle/Tacoma Intl Airport to Ireland.

  • What documentation or ID do you need to fly to Ireland?

    The travel and health documents you'll need for your trip to Ireland may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Ireland. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

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

Best airlines flying from Seattle to Ireland

Compare and see reviews for airlines that fly from Seattle to Ireland with momondo
Airline
Rating
Free Cancellation
Price
JetBluePriceFrom $101Free CancellationRating
7.2
2,916 reviews
Search JetBlue flights
Air FrancePriceFrom $337Free CancellationRating
7.4
1,468 reviews
Search Air France flights
Air CanadaPriceFrom $341Free CancellationRating
7.1
9,977 reviews
Search Air Canada flights
IberiaPriceFrom $363Free CancellationRating
7.0
2,883 reviews
Search Iberia flights
IcelandairPriceFrom $376Free CancellationRating
7.0
527 reviews
Search Icelandair flights
DeltaPriceFrom $399Free CancellationRating
8.0
7,986 reviews
Search Delta flights
KLMPriceFrom $405Free CancellationRating
7.8
1,385 reviews
Search KLM flights
Aer LingusPriceFrom $427Free CancellationRating
7.1
1,217 reviews
Search Aer Lingus flights
United AirlinesPriceFrom $431Free CancellationRating
7.4
8,919 reviews
Search United Airlines flights
British AirwaysPriceFrom $450Free CancellationRating
6.6
7,271 reviews
Search British Airways flights

Why use momondo?

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

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

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

Yes. All flights to Ireland from Seattle on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Ireland from Seattle.

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

If you are simply researching potential flights to Ireland, momondo offers a useful price alert feature which will track prices for flights to Ireland from Seattle and alert you when they change.

An easier way to manage your Ireland trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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Find better results for your trip to Ireland

Popular cities in Ireland

Popular flights according to clicks in the last 7 days on momondo
Flights to Dublinfrom $319
Flights to Shannon, Clarefrom $312
Flights to Corkfrom $362
Flights to Knockfrom $591
Flights to Milltown (Kerry)from $448
Flights to Donegalfrom $566