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Cheap flights from Seattle to Ireland from $220

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 4/20. 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.
Scandinavian Airlines Logo
3:55 pm - 8:00 am
SEA
-
DUB
32h 05m
2 stops
Scandinavian Airlines Logo
7:50 pm - 1:45 pm
DUB
-
SEA
25h 55m
2 stops
$501Scandinavian Airlines
Fri, Aug 28 - Mon, Sep 7
Scandinavian Airlines Logo
3:55 pm - 9:25 am
SEA
-
DUB
33h 30m
1 stop
Scandinavian Airlines Logo
12:40 pm - 1:45 pm
DUB
-
SEA
33h 05m
1 stop
$502Scandinavian Airlines
Fri, Aug 28 - Thu, Sep 3
Scandinavian Airlines Logo
3:55 pm - 10:10 am
SEA
-
DUB
34h 15m
2 stops
Scandinavian Airlines Logo
12:40 pm - 1:45 pm
DUB
-
SEA
33h 05m
1 stop
$508Scandinavian Airlines
Sun, Aug 30 - Fri, Sep 11
United Airlines Logo
12:08 pm - 10:15 am
SEA
-
SNN
14h 07m
1 stop
United Airlines Logo
12:30 pm - 10:39 am
SNN
-
SEA
30h 09m
2 stops
$563United Airlines
Tue, Apr 21 - Tue, Apr 28
United Airlines Logo
11:55 am - 10:15 am
SEA
-
SNN
14h 20m
1 stop
United Airlines Logo
12:30 pm - 11:48 am
SNN
-
SEA
31h 18m
2 stops
$568United Airlines
Mon, May 4 - Tue, May 12
Delta Logo
1:30 pm - 2:40 pm
SEA
-
ORK
17h 10m
1 stop
Delta Logo
5:10 pm - 4:35 pm
ORK
-
SEA
31h 25m
1 stop
$687Delta
Sun, Aug 30 - Mon, Sep 7
Lufthansa Logo
2:10 pm - 4:30 pm
SEA
-
ORK
18h 20m
1 stop
Lufthansa Logo
5:05 pm - 11:55 am
ORK
-
SEA
26h 50m
1 stop
$698Lufthansa
Tue, Sep 1 - Mon, Sep 7
Lufthansa Logo
2:10 pm - 4:30 pm
SEA
-
ORK
18h 20m
1 stop
Lufthansa Logo
5:05 pm - 8:03 pm
ORK
-
SEA
34h 58m
2 stops
$708Lufthansa
Tue, Sep 1 - Mon, Sep 7
KLM Logo
5:35 pm - 10:35 pm
SEA
-
ORK
21h 00m
1 stop
KLM Logo
5:10 pm - 4:30 pm
ORK
-
SEA
31h 20m
1 stop
$718KLM
Mon, Apr 6 - Wed, Apr 22
Delta Logo
11:10 am - 2:40 pm
SEA
-
ORK
19h 30m
2 stops
Delta Logo
6:15 am - 11:40 am
ORK
-
SEA
13h 25m
1 stop
$719Delta
Wed, Apr 22 - Wed, Apr 29

Scandinavian Airlines flights from Seattle to Ireland

Our best Scandinavian Airlines deals on Seattle to Ireland flight tickets
Scandinavian Airlines
Aug 28
SEA3:55 pmSeattle/Tacoma Intl
32h 05m
2 stops
DUB8:00 amDublin
Sep 7
DUB7:50 pmDublin
25h 55m
2 stops
SEA1:45 pmSeattle/Tacoma Intl
$501
Scandinavian Airlines
Aug 28
SEA3:55 pmSeattle/Tacoma Intl
33h 30m
1 stop
DUB9:25 amDublin
Sep 3
DUB12:40 pmDublin
33h 05m
1 stop
SEA1:45 pmSeattle/Tacoma Intl
$502
Scandinavian Airlines
Aug 30
SEA3:55 pmSeattle/Tacoma Intl
34h 15m
2 stops
DUB10:10 amDublin
Sep 11
DUB12:40 pmDublin
33h 05m
1 stop
SEA1:45 pmSeattle/Tacoma Intl
$508

Aer Lingus flights from Seattle to Ireland

Our best Aer Lingus deals on Seattle to Ireland flight tickets
Aer Lingus
Mar 11
SEA9:05 pmSeattle/Tacoma Intl
9h 05m
DUB1:10 pmDublin
Mar 25
DUB4:30 pmDublin
9h 50m
SEA7:20 pmSeattle/Tacoma Intl
$709
Aer Lingus
Mar 16
SEA9:05 pmSeattle/Tacoma Intl
9h 05m
DUB1:10 pmDublin
May 16
DUB3:25 pmDublin
9h 45m
SEA5:10 pmSeattle/Tacoma Intl
$710
Aer Lingus
Mar 16
SEA9:05 pmSeattle/Tacoma Intl
9h 05m
DUB1:10 pmDublin
Apr 14
DUB3:25 pmDublin
9h 45m
SEA5:10 pmSeattle/Tacoma Intl
$715

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 March 9, 2026.
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

Cheapest round-trip

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Fri 8/28

3:55 pm-8:00 am

2 stops32h 05m

Dublin

Mon 9/7

7:50 pm-1:45 pm

2 stops25h 55m

$501

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Fri 8/28

3:55 pm-9:25 am

1 stop33h 30m

Dublin

Thu 9/3

12:40 pm-1:45 pm

1 stop33h 05m

$502

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sun 8/30

3:55 pm-10:10 am

2 stops34h 15m

Dublin

Fri 9/11

12:40 pm-1:45 pm

1 stop33h 05m

$508

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Tue 4/21

12:08 pm-10:15 am

1 stop14h 07m

Shannon

Tue 4/28

12:30 pm-10:39 am

2 stops30h 09m

$563

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Mon 5/4

11:55 am-10:15 am

1 stop14h 20m

Shannon

Tue 5/12

12:30 pm-11:48 am

2 stops31h 18m

$568

SeattleCork

SEA - ORK

SEAORK

Seattle/Tacoma Intl

Sun 8/30

1:30 pm-2:40 pm

1 stop17h 10m

Cork

Mon 9/7

5:10 pm-4:35 pm

1 stop31h 25m

$687

SeattleCork

SEA - ORK

SEAORK

Seattle/Tacoma Intl

Tue 9/1

2:10 pm-4:30 pm

1 stop18h 20m

Cork

Mon 9/7

5:05 pm-11:55 am

1 stop26h 50m

$698

SeattleCork

SEA - ORK

SEAORK

Seattle/Tacoma Intl

Tue 9/1

2:10 pm-4:30 pm

1 stop18h 20m

Cork

Mon 9/7

5:05 pm-8:03 pm

2 stops34h 58m

$708

SeattleCork

SEA - ORK

SEAORK

Seattle/Tacoma Intl

Mon 4/6

5:35 pm-10:35 pm

1 stop21h 00m

Cork

Wed 4/22

5:10 pm-4:30 pm

1 stop31h 20m

$718
Quickest round-trip

SeattleCork

SEA - ORK

SEAORK

Seattle/Tacoma Intl

Wed 4/22

11:10 am-2:40 pm

2 stops19h 30m

Cork

Wed 4/29

6:15 am-11:40 am

1 stop13h 25m

$719

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 $468. If you aren’t able to travel to Ireland during the month of November, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $471.

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 $697. 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 $873. 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 in the evening. momondo users have found flights departing from Seattle to Ireland in the evening for as low as $666. 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 $833.

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 $626 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 $512 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 15% 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

$376

Fastest flight time

9h 05m

Direct flights

Every day

Airports in Ireland

77 airports
The best one-way flight to Ireland from Seattle in the past 72 hours is $376. The best round-trip flight deal from Seattle to Ireland found on momondo in the last 72 hours is $726.
The fastest flight from Seattle to Ireland takes 9h 05m
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
10,800 reviews
Search Air Canada flights
IcelandairPriceFrom $348Free CancellationRating
7.1
619 reviews
Search Icelandair flights
IberiaPriceFrom $367Free CancellationRating
7.0
3,133 reviews
Search Iberia flights
Aer LingusPriceFrom $398Free CancellationRating
7.2
1,473 reviews
Search Aer Lingus flights
KLMPriceFrom $405Free CancellationRating
7.8
1,468 reviews
Search KLM flights
United AirlinesPriceFrom $407Free CancellationRating
7.4
9,409 reviews
Search United Airlines flights
British AirwaysPriceFrom $407Free CancellationRating
6.7
7,781 reviews
Search British Airways flights
Scandinavian AirlinesPriceFrom $444Free CancellationRating
7.3
1,708 reviews
Search Scandinavian Airlines flights
LufthansaPriceFrom $457Free CancellationRating
6.8
7,840 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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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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