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Cheap flights from Seattle to Ireland 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 Seattle to Ireland departing on 12/10. 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 Seattle to Ireland

Cheap round-trip flights

Enter your travel dates to find the best prices.
Icelandair Logo
2:35 pm - 10:15 amSEA-DUB
11h 40m1 stop
Icelandair Logo
11:30 am - 5:00 pmDUB-SEA
13h 30m1 stop
$404Icelandair
Find Deal
Tue, Nov 11 - Thu, Nov 20
Icelandair Logo
2:35 pm - 10:15 amSEA-DUB
11h 40m1 stop
Icelandair Logo
11:30 am - 5:00 pmDUB-SEA
13h 30m1 stop
$405Icelandair
Find Deal
Mon, Nov 10 - Tue, Nov 18
British Airways Logo
6:50 pm - 7:55 amSEA-DUB
29h 05m1 stop
British Airways Logo
10:55 am - 4:55 pmDUB-SEA
14h 00m1 stop
$410British Airways
Find Deal
Sun, Feb 1 - Tue, Feb 10
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
$411British Airways
Find Deal
Wed, Feb 25 - Fri, Mar 6
Aer Lingus Logo
8:05 pm - 1:10 pmSEA-DUB
9h 05mnonstop
Aer Lingus Logo
4:30 pm - 6:20 pmDUB-SEA
9h 50mnonstop
$416Aer Lingus
Find Deal
Sun, Nov 9 - Wed, Nov 19
American Airlines Logo
6:50 pm - 3:40 pmSEA-DUB
12h 50m1 stop
American Airlines Logo
10:00 am - 4:55 pmDUB-SEA
14h 55m1 stop
$417American Airlines
Find Deal
Tue, Dec 2 - Tue, Dec 9
American Airlines Logo
6:50 pm - 3:25 pmSEA-ORK
12h 35m1 stop
American Airlines Logo
7:40 am - 4:55 pmORK-SEA
17h 15m1 stop
$421American Airlines
Find Deal
Wed, Feb 11 - Wed, Feb 25
Aer Lingus Logo
8:05 pm - 1:10 pmSEA-DUB
9h 05mnonstop
Aer Lingus Logo
4:30 pm - 7:20 pmDUB-SEA
9h 50mnonstop
$444Aer Lingus
Find Deal
Wed, Mar 4 - Fri, Mar 13
United Airlines Logo
7:00 am - 9:55 amSEA-DUB
19h 55m2 stops
United Airlines Logo
8:00 am - 6:58 pmDUB-SEA
41h 58m2 stops
$460United Airlines
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Wed, Mar 11 - Wed, Mar 25
United Airlines Logo
8:55 am - 9:55 amSEA-DUB
18h 00m2 stops
United Airlines Logo
9:50 am - 1:20 pmDUB-SEA
35h 30m2 stops
$464United Airlines
Find Deal
Mon, Mar 23 - Fri, Apr 3

Icelandair flights from Seattle to Ireland

Our best Icelandair deals on Seattle to Ireland flight tickets
Icelandair
Nov 11
SEA2:35 pmSeattle/Tacoma Intl
11h 40m
1 stop
DUB10:15 amDublin
Nov 20
DUB11:30 amDublin
13h 30m
1 stop
SEA5:00 pmSeattle/Tacoma Intl
$404
Find similar
Icelandair
Nov 10
SEA2:35 pmSeattle/Tacoma Intl
11h 40m
1 stop
DUB10:15 amDublin
Nov 18
DUB11:30 amDublin
13h 30m
1 stop
SEA5:00 pmSeattle/Tacoma Intl
$405
Find similar
Icelandair
Apr 2
SEA3:45 pmSeattle/Tacoma Intl
11h 20m
1 stop
DUB11:05 amDublin
Apr 8
DUB12:15 pmDublin
13h 35m
1 stop
SEA5:50 pmSeattle/Tacoma Intl
$408
Find similar

British Airways flights from Seattle to Ireland

Our best British Airways deals on Seattle to Ireland flight tickets
British Airways
Feb 1
SEA6:50 pmSeattle/Tacoma Intl
29h 05m
1 stop
DUB7:55 amDublin
Feb 10
DUB10:55 amDublin
14h 00m
1 stop
SEA4:55 pmSeattle/Tacoma Intl
$410
Find similar
British Airways
Feb 25
SEA6:50 pmSeattle/Tacoma Intl
14h 10m
1 stop
DUB5:00 pmDublin
Mar 6
DUB8:50 amDublin
16h 05m
1 stop
SEA4:55 pmSeattle/Tacoma Intl
$411
Find similar
British Airways
Jan 7
SEA6:50 pmSeattle/Tacoma Intl
14h 10m
1 stop
DUB5:00 pmDublin
Jan 15
DUB10:30 amDublin
14h 25m
1 stop
SEA4:55 pmSeattle/Tacoma Intl
$413
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 October 27, 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

Tue 11/11

2:35 pm-10:15 am

1 stop11h 40m

Dublin

Thu 11/20

11:30 am-5:00 pm

1 stop13h 30m

$404

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Mon 11/10

2:35 pm-10:15 am

1 stop11h 40m

Dublin

Tue 11/18

11:30 am-5:00 pm

1 stop13h 30m

$405

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sun 2/1

6:50 pm-7:55 am

1 stop29h 05m

Dublin

Tue 2/10

10:55 am-4:55 pm

1 stop14h 00m

$410

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Wed 2/25

6:50 pm-5:00 pm

1 stop14h 10m

Dublin

Fri 3/6

8:50 am-4:55 pm

1 stop16h 05m

$411

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sun 11/9

8:05 pm-1:10 pm

Nonstop9h 05m

Dublin

Wed 11/19

4:30 pm-6:20 pm

Nonstop9h 50m

$416

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Tue 12/2

6:50 pm-3:40 pm

1 stop12h 50m

Dublin

Tue 12/9

10:00 am-4:55 pm

1 stop14h 55m

$417

SeattleCork

SEA - ORK

SEAORK

Seattle/Tacoma Intl

Wed 2/11

6:50 pm-3:25 pm

1 stop12h 35m

Cork

Wed 2/25

7:40 am-4:55 pm

1 stop17h 15m

$421

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Wed 3/4

8:05 pm-1:10 pm

Nonstop9h 05m

Dublin

Fri 3/13

4:30 pm-7:20 pm

Nonstop9h 50m

$444

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Wed 3/11

7:00 am-9:55 am

2 stops19h 55m

Dublin

Wed 3/25

8:00 am-6:58 pm

2 stops41h 58m

$460

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Mon 3/23

8:55 am-9:55 am

2 stops18h 00m

Dublin

Fri 4/3

9:50 am-1:20 pm

2 stops35h 30m

$464

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 $507. 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 $509.

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 Tuesday when prices can be found for as low as $745. 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 $914. 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 $906.

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 $661 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 $591 on momondo.

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

There are 2 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 39% 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

$428

Fastest flight time

9h 00m

Direct flights

Every day

Airports in Ireland

1 airport
The best one-way flight to Ireland from Seattle in the past 72 hours is $428. The best round-trip flight deal from Seattle to Ireland found on momondo in the last 72 hours is $518.
The fastest flight from Seattle to Ireland takes 9h 00m
Direct flights go from Seattle to Ireland every day.
There is 1 airport near Ireland: Dublin (DUB)
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
2,907 reviews
Search JetBlue flights
Air FrancePriceFrom $337Free CancellationRating
7.4
1,481 reviews
Search Air France flights
Air CanadaPriceFrom $341Free CancellationRating
7.1
10,370 reviews
Search Air Canada flights
IcelandairPriceFrom $366Free CancellationRating
7.1
562 reviews
Search Icelandair flights
IberiaPriceFrom $367Free CancellationRating
7.0
3,001 reviews
Search Iberia flights
KLMPriceFrom $405Free CancellationRating
7.7
1,406 reviews
Search KLM flights
Aer LingusPriceFrom $414Free CancellationRating
7.2
1,360 reviews
Search Aer Lingus flights
British AirwaysPriceFrom $425Free CancellationRating
6.7
7,481 reviews
Search British Airways flights
United AirlinesPriceFrom $431Free CancellationRating
7.4
8,996 reviews
Search United Airlines flights
LufthansaPriceFrom $467Free CancellationRating
6.8
7,532 reviews
Search Lufthansa 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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