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Cheap flights from Seattle to Ireland from $260

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 2/24. 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
3:40 pm - 1:15 pm
SEA
-
DUB
13h 35m
1 stop
Icelandair Logo
2:15 pm - 8:40 pm
DUB
-
SEA
14h 25m
1 stop
$381Icelandair
lun., abr. 6 - lun., abr. 13
Icelandair Logo
3:40 pm - 11:05 am
SEA
-
DUB
11h 25m
1 stop
Icelandair Logo
2:15 pm - 8:40 pm
DUB
-
SEA
14h 25m
1 stop
$382Icelandair
mar., abr. 14 - sáb., abr. 25
Icelandair Logo
3:40 pm - 11:05 am
SEA
-
DUB
11h 25m
1 stop
Icelandair Logo
2:15 pm - 8:40 pm
DUB
-
SEA
14h 25m
1 stop
$389Icelandair
mar., abr. 28 - mar., may. 12
British Airways Logo
7:15 am - 11:30 am
SEA
-
SNN
20h 15m
2 stops
British Airways Logo
7:50 am - 6:20 pm
SNN
-
SEA
18h 30m
2 stops
$394British Airways
mié., feb. 25 - mié., mar. 4
British Airways Logo
6:50 pm - 4:45 pm
SEA
-
SNN
13h 55m
1 stop
British Airways Logo
7:50 am - 6:20 pm
SNN
-
SEA
18h 30m
2 stops
$397British Airways
mié., feb. 25 - mié., mar. 4
Icelandair Logo
3:40 pm - 1:15 pm
SEA
-
DUB
13h 35m
1 stop
Icelandair Logo
12:15 pm - 5:55 pm
DUB
-
SEA
13h 40m
1 stop
$397Icelandair
vie., may. 1 - vie., may. 8
British Airways Logo
5:37 am - 11:30 am
SEA
-
SNN
21h 53m
2 stops
British Airways Logo
8:05 pm - 7:20 pm
SNN
-
SEA
30h 15m
2 stops
$399British Airways
mar., mar. 3 - mar., mar. 10
British Airways Logo
1:25 pm - 11:30 am
SEA
-
SNN
14h 05m
1 stop
British Airways Logo
8:05 pm - 7:20 pm
SNN
-
SEA
30h 15m
2 stops
$402British Airways
mar., mar. 3 - mar., mar. 10
Multiple Airlines Logo
5:50 am - 4:30 pm
SEA
-
ORK
26h 40m
2 stops
Multiple Airlines Logo
5:05 pm - 12:20 pm
ORK
-
SEA
27h 15m
1 stop
$499Multiple Airlines
dom., abr. 5 - jue., abr. 16
Lufthansa Logo
2:10 pm - 4:30 pm
SEA
-
ORK
18h 20m
1 stop
Lufthansa Logo
5:05 pm - 12:20 pm
ORK
-
SEA
27h 15m
1 stop
$551Lufthansa
dom., abr. 5 - jue., abr. 16

Icelandair flights from Seattle to Ireland

Our best Icelandair deals on Seattle to Ireland flight tickets
Icelandair
Apr 6
SEA3:40 pmSeattle/Tacoma Intl
13h 35m
1 stop
DUB1:15 pmDublin
Apr 13
DUB2:15 pmDublin
14h 25m
1 stop
SEA8:40 pmSeattle/Tacoma Intl
$381
Icelandair
Apr 14
SEA3:40 pmSeattle/Tacoma Intl
11h 25m
1 stop
DUB11:05 amDublin
Apr 25
DUB2:15 pmDublin
14h 25m
1 stop
SEA8:40 pmSeattle/Tacoma Intl
$382
Icelandair
Apr 28
SEA3:40 pmSeattle/Tacoma Intl
11h 25m
1 stop
DUB11:05 amDublin
May 12
DUB2:15 pmDublin
14h 25m
1 stop
SEA8:40 pmSeattle/Tacoma Intl
$389

Delta flights from Seattle to Ireland

Our best Delta deals on Seattle to Ireland flight tickets
Delta
Feb 1
SEA2:15 pmSeattle/Tacoma Intl
33h 35m
1 stop
DUB7:50 amDublin
Feb 19
DUB1:25 pmDublin
30h 15m
1 stop
SEA11:40 amSeattle/Tacoma Intl
$494
Delta
Jan 23
SEA2:10 pmSeattle/Tacoma Intl
17h 35m
1 stop
DUB3:45 pmDublin
Feb 3
DUB5:55 amDublin
13h 45m
1 stop
SEA11:40 amSeattle/Tacoma Intl
$542

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 enero 13, 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

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

lun. 4/6

3:40 pm-1:15 pm

1 stop13h 35m

Dublin

lun. 4/13

2:15 pm-8:40 pm

1 stop14h 25m

$381

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

mar. 4/14

3:40 pm-11:05 am

1 stop11h 25m

Dublin

sáb. 4/25

2:15 pm-8:40 pm

1 stop14h 25m

$382

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

mar. 4/28

3:40 pm-11:05 am

1 stop11h 25m

Dublin

mar. 5/12

2:15 pm-8:40 pm

1 stop14h 25m

$389

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

mié. 2/25

7:15 am-11:30 am

2 stops20h 15m

Shannon

mié. 3/4

7:50 am-6:20 pm

2 stops18h 30m

$394

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

mié. 2/25

6:50 pm-4:45 pm

1 stop13h 55m

Shannon

mié. 3/4

7:50 am-6:20 pm

2 stops18h 30m

$397

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

vie. 5/1

3:40 pm-1:15 pm

1 stop13h 35m

Dublin

vie. 5/8

12:15 pm-5:55 pm

1 stop13h 40m

$397

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

mar. 3/3

5:37 am-11:30 am

2 stops21h 53m

Shannon

mar. 3/10

8:05 pm-7:20 pm

2 stops30h 15m

$399

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

mar. 3/3

1:25 pm-11:30 am

1 stop14h 05m

Shannon

mar. 3/10

8:05 pm-7:20 pm

2 stops30h 15m

$402

SeattleCork

SEA - ORK

SEAORK

Seattle/Tacoma Intl

dom. 4/5

5:50 am-4:30 pm

2 stops26h 40m

Cork

jue. 4/16

5:05 pm-12:20 pm

1 stop27h 15m

$499

SeattleCork

SEA - ORK

SEAORK

Seattle/Tacoma Intl

dom. 4/5

2:10 pm-4:30 pm

1 stop18h 20m

Cork

jue. 4/16

5:05 pm-12:20 pm

1 stop27h 15m

$551

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 $473. 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 $550.

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 $711. 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 in the evening. momondo users have found flights departing from Seattle to Ireland in the evening for as low as $661. 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 $867.

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 $645 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 $584 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 23% 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

$438

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 $438. The best round-trip flight deal from Seattle to Ireland found on momondo in the last 72 hours is $602.
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
2,884 reviews
Search JetBlue flights
Air CanadaPriceFrom $341Free CancellationRating
7.1
10,619 reviews
Search Air Canada flights
IcelandairPriceFrom $356Free CancellationRating
7.1
596 reviews
Search Icelandair flights
IberiaPriceFrom $367Free CancellationRating
7.0
3,086 reviews
Search Iberia flights
KLMPriceFrom $405Free CancellationRating
7.7
1,437 reviews
Search KLM flights
British AirwaysPriceFrom $407Free CancellationRating
6.7
7,671 reviews
Search British Airways flights
Aer LingusPriceFrom $408Free CancellationRating
7.2
1,435 reviews
Search Aer Lingus flights
United AirlinesPriceFrom $431Free CancellationRating
7.4
9,156 reviews
Search United Airlines flights
Scandinavian AirlinesPriceFrom $444Free CancellationRating
7.3
1,649 reviews
Search Scandinavian Airlines flights
LufthansaPriceFrom $467Free CancellationRating
6.8
7,711 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

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jue. 2/12
jue. 2/19
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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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