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Cheap flights from Seattle to Ireland from $285

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 12/5. 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.
British Airways Logo
1:44 pm - 2:20 pmSEA-DUB
16h 36m2 stops
British Airways Logo
10:55 am - 4:55 pmDUB-SEA
14h 00m1 stop
$411British Airways
Find Deal
Tue, Feb 24 - Tue, Mar 3
Icelandair Logo
3:35 pm - 10:15 amSEA-DUB
11h 40m1 stop
Icelandair Logo
11:30 am - 8:45 pmDUB-SEA
16h 15m1 stop
$414Icelandair
Find Deal
Mon, Mar 23 - Fri, Mar 27
American Airlines Logo
6:50 pm - 5:45 pmSEA-DUB
14h 55m1 stop
American Airlines Logo
8:45 am - 4:55 pmDUB-SEA
16h 10m1 stop
$416American Airlines
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Wed, Jan 7 - Thu, Jan 15
Aer Lingus Logo
8:05 pm - 1:10 pmSEA-DUB
9h 05mnonstop
Aer Lingus Logo
4:30 pm - 6:20 pmDUB-SEA
9h 50mnonstop
$418Aer Lingus
Find Deal
Wed, Dec 3 - Wed, Dec 10
American Airlines Logo
6:50 pm - 5:45 pmSEA-DUB
14h 55m1 stop
American Airlines Logo
11:30 am - 9:50 pmDUB-SEA
18h 20m1 stop
$419American Airlines
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Tue, Dec 2 - Fri, Dec 12
Delta Logo
6:00 am - 7:45 amSEA-DUB
17h 45m1 stop
Delta Logo
9:45 am - 8:35 pmDUB-SEA
18h 50m1 stop
$433Delta
Find Deal
Tue, Dec 2 - Tue, Dec 16
Delta Logo
6:00 am - 7:45 amSEA-DUB
17h 45m1 stop
Delta Logo
10:45 am - 11:58 pmDUB-SEA
21h 13m2 stops
$438Delta
Find Deal
Tue, Dec 2 - Tue, Dec 9
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
12:20 pm - 9:55 amSEA-DUB
14h 35m1 stop
United Airlines Logo
9:50 am - 4:25 pmDUB-SEA
38h 35m2 stops
$459United Airlines
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Wed, Mar 18 - Thu, Apr 2
United Airlines Logo
2:10 pm - 8:10 amSEA-DUB
34h 00m1 stop
United Airlines Logo
9:00 am - 6:14 pmDUB-SEA
41h 14m2 stops
$460United Airlines
Find Deal
Tue, Jan 6 - Fri, Jan 16

British Airways flights from Seattle to Ireland

Our best British Airways deals on Seattle to Ireland flight tickets
British Airways
Feb 24
SEA1:44 pmSeattle/Tacoma Intl
16h 36m
2 stops
DUB2:20 pmDublin
Mar 3
DUB10:55 amDublin
14h 00m
1 stop
SEA4:55 pmSeattle/Tacoma Intl
$411
Find similar
British Airways
Mar 4
SEA6:50 pmSeattle/Tacoma Intl
29h 05m
1 stop
DUB7:55 amDublin
Mar 13
DUB10:45 amDublin
14h 10m
1 stop
SEA5:55 pmSeattle/Tacoma Intl
$432
Find similar
British Airways
Feb 25
SEA1:23 pmSeattle/Tacoma Intl
19h 37m
2 stops
DUB5:00 pmDublin
Mar 6
DUB8:50 amDublin
16h 05m
1 stop
SEA4:55 pmSeattle/Tacoma Intl
$450
Find similar

Icelandair flights from Seattle to Ireland

Our best Icelandair deals on Seattle to Ireland flight tickets
Icelandair
Mar 23
SEA3:35 pmSeattle/Tacoma Intl
11h 40m
1 stop
DUB10:15 amDublin
Mar 27
DUB11:30 amDublin
16h 15m
1 stop
SEA8:45 pmSeattle/Tacoma Intl
$414
Find similar
Icelandair
May 2
SEA3:45 pmSeattle/Tacoma Intl
11h 20m
1 stop
DUB11:05 amDublin
May 12
DUB2:15 pmDublin
11h 35m
1 stop
SEA5:50 pmSeattle/Tacoma Intl
$421
Find similar
Icelandair
May 1
SEA7:00 pmSeattle/Tacoma Intl
32h 05m
1 stop
DUB11:05 amDublin
May 12
DUB2:15 pmDublin
11h 35m
1 stop
SEA5:50 pmSeattle/Tacoma Intl
$422
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 November 10, 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 2/24

1:44 pm-2:20 pm

2 stops16h 36m

Dublin

Tue 3/3

10:55 am-4:55 pm

1 stop14h 00m

$411

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Mon 3/23

3:35 pm-10:15 am

1 stop11h 40m

Dublin

Fri 3/27

11:30 am-8:45 pm

1 stop16h 15m

$414

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Wed 1/7

6:50 pm-5:45 pm

1 stop14h 55m

Dublin

Thu 1/15

8:45 am-4:55 pm

1 stop16h 10m

$416

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Wed 12/3

8:05 pm-1:10 pm

Nonstop9h 05m

Dublin

Wed 12/10

4:30 pm-6:20 pm

Nonstop9h 50m

$418

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Tue 12/2

6:50 pm-5:45 pm

1 stop14h 55m

Dublin

Fri 12/12

11:30 am-9:50 pm

1 stop18h 20m

$419

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Tue 12/2

6:00 am-7:45 am

1 stop17h 45m

Dublin

Tue 12/16

9:45 am-8:35 pm

1 stop18h 50m

$433

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Tue 12/2

6:00 am-7:45 am

1 stop17h 45m

Dublin

Tue 12/9

10:45 am-11:58 pm

2 stops21h 13m

$438

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 3/18

12:20 pm-9:55 am

1 stop14h 35m

Dublin

Thu 4/2

9:50 am-4:25 pm

2 stops38h 35m

$459

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Tue 1/6

2:10 pm-8:10 am

1 stop34h 00m

Dublin

Fri 1/16

9:00 am-6:14 pm

2 stops41h 14m

$460

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 $490. 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 $526.

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 $741. 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 $918. 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 $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 $587 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

$436

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 $436. The best round-trip flight deal from Seattle to Ireland found on momondo in the last 72 hours is $564.
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
2,908 reviews
Search JetBlue flights
Air FrancePriceFrom $337Free CancellationRating
7.4
1,486 reviews
Search Air France flights
Air CanadaPriceFrom $341Free CancellationRating
7.1
10,429 reviews
Search Air Canada flights
IcelandairPriceFrom $364Free CancellationRating
7.0
574 reviews
Search Icelandair flights
IberiaPriceFrom $367Free CancellationRating
7.0
3,007 reviews
Search Iberia flights
KLMPriceFrom $405Free CancellationRating
7.7
1,410 reviews
Search KLM flights
Aer LingusPriceFrom $416Free CancellationRating
7.2
1,366 reviews
Search Aer Lingus flights
British AirwaysPriceFrom $425Free CancellationRating
6.7
7,508 reviews
Search British Airways flights
United AirlinesPriceFrom $431Free CancellationRating
7.4
9,011 reviews
Search United Airlines flights
LufthansaPriceFrom $467Free CancellationRating
6.8
7,562 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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