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Cheap flights from Seattle to Ireland from $262

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 1/25. 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

Enter your travel dates to find the best prices.
Icelandair Logo
2:35 pm - 10:15 am
SEA
-
DUB
11h 40m1 stop
Icelandair Logo
11:30 am - 5:00 pm
DUB
-
SEA
13h 30m1 stop
$438Icelandair
Wed, Jan 21 - Wed, Feb 4
Icelandair Logo
3:35 pm - 10:15 am
SEA
-
DUB
11h 40m1 stop
Icelandair Logo
2:15 pm - 8:40 pm
DUB
-
SEA
14h 25m1 stop
$446Icelandair
Tue, Mar 17 - Tue, Apr 14
Icelandair Logo
2:35 pm - 10:15 am
SEA
-
DUB
11h 40m1 stop
Icelandair Logo
11:30 am - 5:00 pm
DUB
-
SEA
13h 30m1 stop
$447Icelandair
Fri, Feb 6 - Wed, Feb 11
British Airways Logo
6:50 pm - 7:40 pm
SEA
-
DUB
16h 50m1 stop
British Airways Logo
8:50 am - 5:55 pm
DUB
-
SEA
16h 05m1 stop
$464British Airways
Sun, Mar 1 - Wed, Mar 11
American Airlines Logo
1:35 pm - 11:20 am
SEA
-
SNN
13h 45m1 stop
American Airlines Logo
7:40 am - 11:05 pm
SNN
-
SEA
23h 25m2 stops
$530American Airlines
Tue, Apr 14 - Sat, Apr 25
American Airlines Logo
1:33 pm - 4:10 pm
SEA
-
SNN
18h 37m2 stops
American Airlines Logo
7:40 am - 11:05 pm
SNN
-
SEA
23h 25m2 stops
$535American Airlines
Tue, Apr 14 - Sat, Apr 25
Lufthansa Logo
3:00 pm - 11:15 am
SEA
-
SNN
36h 15m2 stops
Lufthansa Logo
10:55 am - 12:20 pm
SNN
-
SEA
33h 25m1 stop
$593Lufthansa
Thu, May 7 - Thu, May 21
Air Canada Logo
9:55 am - 11:30 am
SEA
-
SNN
41h 35m2 stops
Air Canada Logo
7:50 am - 2:31 pm
SNN
-
SEA
38h 41m2 stops
$670Air Canada
Wed, Feb 4 - Sun, Feb 8
British Airways Logo
5:45 pm - 11:30 am
SEA
-
SNN
33h 45m2 stops
British Airways Logo
8:05 pm - 4:55 pm
SNN
-
SEA
28h 50m1 stop
$672British Airways
Wed, Feb 4 - Sun, Feb 8
Air Canada Logo
10:05 am - 11:25 pm
SEA
-
ORK
29h 20m2 stops
Air Canada Logo
11:55 am - 10:16 pm
ORK
-
SEA
41h 21m2 stops
$827Air Canada
Thu, Mar 5 - Mon, Mar 9

Air Canada flights from Seattle to Ireland

Our best Air Canada deals on Seattle to Ireland flight tickets
Air Canada
Feb 16
SEA8:00 pmSeattle/Tacoma Intl
27h 10m
2 stops
DUB7:10 amDublin
Mar 4
DUB9:00 amDublin
32h 31m
2 stops
SEA9:31 amSeattle/Tacoma Intl
$465
Find similar
Air Canada
Feb 16
SEA8:00 pmSeattle/Tacoma Intl
27h 10m
2 stops
DUB7:10 amDublin
Mar 4
DUB9:00 amDublin
38h 01m
2 stops
SEA3:01 pmSeattle/Tacoma Intl
$467
Find similar
Air Canada
May 6
SEA5:40 amSeattle/Tacoma Intl
18h 35m
2 stops
DUB8:15 amDublin
May 13
DUB9:50 amDublin
12h 30m
1 stop
SEA2:20 pmSeattle/Tacoma Intl
$488
Find similar

Lufthansa flights from Seattle to Ireland

Our best Lufthansa deals on Seattle to Ireland flight tickets
Lufthansa
Feb 27
SEA3:40 pmSeattle/Tacoma Intl
55h 30m
2 stops
DUB7:10 amDublin
Apr 17
DUB6:05 amDublin
14h 15m
1 stop
SEA12:20 pmSeattle/Tacoma Intl
$496
Find similar
Lufthansa
May 5
SEA9:55 amSeattle/Tacoma Intl
13h 50m
1 stop
DUB7:45 amDublin
May 28
DUB9:20 amDublin
17h 10m
2 stops
SEA6:30 pmSeattle/Tacoma Intl
$505
Find similar
Lufthansa
Apr 26
SEA7:00 amSeattle/Tacoma Intl
18h 45m
1 stop
DUB9:45 amDublin
May 15
DUB9:50 amDublin
12h 30m
1 stop
SEA2:20 pmSeattle/Tacoma Intl
$506
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 December 26, 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

Wed 1/21

2:35 pm-10:15 am

1 stop11h 40m

Dublin

Wed 2/4

11:30 am-5:00 pm

1 stop13h 30m

$438

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Tue 3/17

3:35 pm-10:15 am

1 stop11h 40m

Dublin

Tue 4/14

2:15 pm-8:40 pm

1 stop14h 25m

$446

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Fri 2/6

2:35 pm-10:15 am

1 stop11h 40m

Dublin

Wed 2/11

11:30 am-5:00 pm

1 stop13h 30m

$447

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sun 3/1

6:50 pm-7:40 pm

1 stop16h 50m

Dublin

Wed 3/11

8:50 am-5:55 pm

1 stop16h 05m

$464

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Tue 4/14

1:35 pm-11:20 am

1 stop13h 45m

Shannon

Sat 4/25

7:40 am-11:05 pm

2 stops23h 25m

$530

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Tue 4/14

1:33 pm-4:10 pm

2 stops18h 37m

Shannon

Sat 4/25

7:40 am-11:05 pm

2 stops23h 25m

$535

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Thu 5/7

3:00 pm-11:15 am

2 stops36h 15m

Shannon

Thu 5/21

10:55 am-12:20 pm

1 stop33h 25m

$593

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Wed 2/4

9:55 am-11:30 am

2 stops41h 35m

Shannon

Sun 2/8

7:50 am-2:31 pm

2 stops38h 41m

$670

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Wed 2/4

5:45 pm-11:30 am

2 stops33h 45m

Shannon

Sun 2/8

8:05 pm-4:55 pm

1 stop28h 50m

$672

SeattleCork

SEA - ORK

SEAORK

Seattle/Tacoma Intl

Thu 3/5

10:05 am-11:25 pm

2 stops29h 20m

Cork

Mon 3/9

11:55 am-10:16 pm

2 stops41h 21m

$827

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, November 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 $472. If you aren’t able to travel to Ireland during the month of November, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $544.

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 $720. 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 $924. 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 $889.

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 $657 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 $594 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 40% 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

$501

Fastest flight time

9h 00m

Direct flights

Every day

Airports in Ireland

77 airports
The best one-way flight to Ireland from Seattle in the past 72 hours is $501. The best round-trip flight deal from Seattle to Ireland found on momondo in the last 72 hours is $577.
The fastest flight from Seattle to Ireland takes 9h 00m
Direct flights go from Seattle to Ireland every day.
There are 77 airports in Ireland. From Seattle there are direct flights to 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
2,900 reviews
Search JetBlue flights
Air CanadaPriceFrom $341Free CancellationRating
7.1
10,562 reviews
Search Air Canada flights
IcelandairPriceFrom $357Free CancellationRating
7.0
592 reviews
Search Icelandair flights
IberiaPriceFrom $367Free CancellationRating
7.0
3,060 reviews
Search Iberia flights
KLMPriceFrom $405Free CancellationRating
7.7
1,434 reviews
Search KLM flights
British AirwaysPriceFrom $407Free CancellationRating
6.7
7,617 reviews
Search British Airways flights
Aer LingusPriceFrom $409Free CancellationRating
7.2
1,412 reviews
Search Aer Lingus flights
United AirlinesPriceFrom $431Free CancellationRating
7.4
9,116 reviews
Search United Airlines flights
Scandinavian AirlinesPriceFrom $444Free CancellationRating
7.4
1,625 reviews
Search Scandinavian Airlines flights
LufthansaPriceFrom $467Free CancellationRating
6.8
7,656 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.
Start using Trips
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Find better results for your trip to Ireland

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Popular flights according to clicks in the last 7 days on momondo
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