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Cheap flights from Seattle to Ireland from $214

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 10/16. 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 Seattle to Ireland

Cheap round-trip flights

Icelandair Logo
3:45 pm - 11:05 amSEA-DUB
11h 20m1 stop
Icelandair Logo
12:15 pm - 8:40 pmDUB-SEA
16h 25m1 stop
$403Icelandair
Find Deal
Sat, Oct 4 - Fri, Oct 10
Icelandair Logo
7:00 pm - 11:05 amSEA-DUB
32h 05m1 stop
Icelandair Logo
12:15 pm - 5:50 pmDUB-SEA
13h 35m1 stop
$404Icelandair
Find Deal
Wed, Oct 15 - Wed, Oct 22
United Airlines Logo
7:00 am - 8:10 amSEA-DUB
17h 10m1 stop
United Airlines Logo
9:00 am - 12:59 amDUB-SEA
23h 59m2 stops
$407United Airlines
Find Deal
Sun, Nov 9 - Wed, Nov 19
United Airlines Logo
1:12 pm - 10:20 amSEA-DUB
13h 08m1 stop
United Airlines Logo
10:40 am - 6:52 pmDUB-SEA
16h 12m1 stop
$413United Airlines
Find Deal
Mon, Oct 20 - Wed, Nov 5
American Airlines Logo
6:50 pm - 4:45 pmSEA-SNN
13h 55m1 stop
American Airlines Logo
7:50 am - 4:55 pmSNN-SEA
17h 05m1 stop
$436American Airlines
Find Deal
Sun, Nov 2 - Tue, Nov 18
American Airlines Logo
6:50 pm - 4:45 pmSEA-SNN
13h 55m1 stop
American Airlines Logo
7:50 am - 9:18 pmSNN-SEA
21h 28m2 stops
$446American Airlines
Find Deal
Sun, Nov 2 - Tue, Nov 18
Aer Lingus Logo
8:05 pm - 1:10 pmSEA-DUB
9h 05mnonstop
Aer Lingus Logo
4:30 pm - 6:20 pmDUB-SEA
9h 50mnonstop
$452Aer Lingus
Find Deal
Wed, Nov 19 - Wed, Dec 3
British Airways Logo
1:30 pm - 11:20 amSEA-SNN
13h 50m1 stop
British Airways Logo
8:05 pm - 12:30 pmSNN-SEA
23h 25m1 stop
$687British Airways
Find Deal
Tue, Oct 21 - Fri, Oct 31
British Airways Logo
8:20 pm - 11:20 amSEA-SNN
31h 00m1 stop
British Airways Logo
8:05 pm - 5:55 pmSNN-SEA
28h 50m1 stop
$695British Airways
Find Deal
Tue, Oct 21 - Thu, Oct 30
Aer Lingus Logo
1:30 pm - 4:10 pmSEA-SNN
18h 40m1 stop
Aer Lingus Logo
8:05 pm - 12:30 pmSNN-SEA
23h 25m1 stop
$752Aer Lingus
Find Deal
Thu, Oct 23 - Mon, Oct 27

United Airlines flights from Seattle to Ireland

Our best United Airlines deals on Seattle to Ireland flight tickets
United Airlines
Nov 9
SEA7:00 amSeattle/Tacoma Intl
17h 10m
1 stop
DUB8:10 amDublin
Nov 19
DUB9:00 amDublin
23h 59m
2 stops
SEA12:59 amSeattle/Tacoma Intl
$407
Find similar
United Airlines
Oct 20
SEA1:12 pmSeattle/Tacoma Intl
13h 08m
1 stop
DUB10:20 amDublin
Nov 5
DUB10:40 amDublin
16h 12m
1 stop
SEA6:52 pmSeattle/Tacoma Intl
$413
Find similar
United Airlines
Oct 27
SEA6:20 amSeattle/Tacoma Intl
18h 10m
1 stop
DUB7:30 amDublin
Nov 12
DUB10:40 amDublin
18h 33m
2 stops
SEA9:13 pmSeattle/Tacoma Intl
$417
Find similar

Icelandair flights from Seattle to Ireland

Our best Icelandair deals on Seattle to Ireland flight tickets
Icelandair
Oct 4
SEA3:45 pmSeattle/Tacoma Intl
11h 20m
1 stop
DUB11:05 amDublin
Oct 10
DUB12:15 pmDublin
16h 25m
1 stop
SEA8:40 pmSeattle/Tacoma Intl
$403
Find similar
Icelandair
Oct 15
SEA7:00 pmSeattle/Tacoma Intl
32h 05m
1 stop
DUB11:05 amDublin
Oct 22
DUB12:15 pmDublin
13h 35m
1 stop
SEA5:50 pmSeattle/Tacoma Intl
$404
Find similar
Icelandair
Oct 21
SEA3:45 pmSeattle/Tacoma Intl
11h 20m
1 stop
DUB11:05 amDublin
Oct 31
DUB11:30 amDublin
13h 30m
1 stop
SEA6:00 pmSeattle/Tacoma Intl
$406
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 September 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

Sat 10/4

3:45 pm-11:05 am

1 stop11h 20m

Dublin

Fri 10/10

12:15 pm-8:40 pm

1 stop16h 25m

$403

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Wed 10/15

7:00 pm-11:05 am

1 stop32h 05m

Dublin

Wed 10/22

12:15 pm-5:50 pm

1 stop13h 35m

$404

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sun 11/9

7:00 am-8:10 am

1 stop17h 10m

Dublin

Wed 11/19

9:00 am-12:59 am

2 stops23h 59m

$407

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Mon 10/20

1:12 pm-10:20 am

1 stop13h 08m

Dublin

Wed 11/5

10:40 am-6:52 pm

1 stop16h 12m

$413

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Sun 11/2

6:50 pm-4:45 pm

1 stop13h 55m

Shannon

Tue 11/18

7:50 am-4:55 pm

1 stop17h 05m

$436

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Sun 11/2

6:50 pm-4:45 pm

1 stop13h 55m

Shannon

Tue 11/18

7:50 am-9:18 pm

2 stops21h 28m

$446

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Wed 11/19

8:05 pm-1:10 pm

Nonstop9h 05m

Dublin

Wed 12/3

4:30 pm-6:20 pm

Nonstop9h 50m

$452

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Tue 10/21

1:30 pm-11:20 am

1 stop13h 50m

Shannon

Fri 10/31

8:05 pm-12:30 pm

1 stop23h 25m

$687

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Tue 10/21

8:20 pm-11:20 am

1 stop31h 00m

Shannon

Thu 10/30

8:05 pm-5:55 pm

1 stop28h 50m

$695

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Thu 10/23

1:30 pm-4:10 pm

1 stop18h 40m

Shannon

Mon 10/27

8:05 pm-12:30 pm

1 stop23h 25m

$752

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 $478. 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 $508.

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 $747. 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 $913. 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 $901.

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 $581 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 7% 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

$448

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 $448. The best round-trip flight deal from Seattle to Ireland found on momondo in the last 72 hours is $537.
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
2,914 reviews
Search JetBlue flights
Air FrancePriceFrom $337Free CancellationRating
7.4
1,468 reviews
Search Air France flights
Air CanadaPriceFrom $341Free CancellationRating
7.1
10,000 reviews
Search Air Canada flights
IberiaPriceFrom $363Free CancellationRating
7.0
2,925 reviews
Search Iberia flights
IcelandairPriceFrom $370Free CancellationRating
7.0
545 reviews
Search Icelandair flights
KLMPriceFrom $405Free CancellationRating
7.8
1,386 reviews
Search KLM flights
Aer LingusPriceFrom $417Free CancellationRating
7.2
1,277 reviews
Search Aer Lingus flights
British AirwaysPriceFrom $426Free CancellationRating
6.7
7,367 reviews
Search British Airways flights
United AirlinesPriceFrom $431Free CancellationRating
7.4
8,926 reviews
Search United Airlines flights
DeltaPriceFrom $432Free CancellationRating
7.9
7,961 reviews
Search Delta 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

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