Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from Seattle to Ireland from $252

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 5/4. 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

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Seattle to Ireland

Cheap round-trip flights

Enter your travel dates to find the best prices.
Scandinavian Airlines Logo
12:00 pm - 11:50 am
SEA
-
DUB
39h 50m
2 stops
Scandinavian Airlines Logo
12:40 pm - 1:45 pm
DUB
-
SEA
33h 05m
1 stop
$641Scandinavian Airlines
Wed, Aug 19 - Fri, Sep 4
Scandinavian Airlines Logo
3:55 pm - 10:25 am
SEA
-
DUB
34h 30m
2 stops
Scandinavian Airlines Logo
8:00 pm - 1:45 pm
DUB
-
SEA
25h 45m
2 stops
$642Scandinavian Airlines
Tue, Sep 8 - Sat, Sep 26
Scandinavian Airlines Logo
3:55 pm - 9:25 am
SEA
-
DUB
33h 30m
1 stop
Scandinavian Airlines Logo
7:50 pm - 1:45 pm
DUB
-
SEA
25h 55m
2 stops
$643Scandinavian Airlines
Fri, Aug 21 - Mon, Aug 31
Multiple Airlines Logo
7:00 pm - 7:45 am
SEA
-
DUB
28h 45m
2 stops
Multiple Airlines Logo
1:00 pm - 6:45 pm
DUB
-
SEA
13h 45m
1 stop
$645Multiple Airlines
Wed, Apr 15 - Sun, May 3
Multiple Airlines Logo
3:40 pm - 8:20 am
SEA
-
DUB
32h 40m
3 stops
Multiple Airlines Logo
9:40 am - 9:40 am
DUB
-
SEA
32h 00m
2 stops
$646Multiple Airlines
Mon, Apr 13 - Wed, Apr 29
Turkish Airlines Logo
7:10 pm - 11:05 pm
SEA
-
DUB
19h 55m
1 stop
Turkish Airlines Logo
10:40 am - 5:15 pm
DUB
-
SEA
38h 35m
1 stop
$653Turkish Airlines
Sun, Apr 19 - Tue, May 5
United Airlines Logo
5:00 am - 10:15 am
SEA
-
SNN
21h 15m
2 stops
United Airlines Logo
9:30 am - 9:11 pm
SNN
-
SEA
19h 41m
2 stops
$757United Airlines
Tue, Aug 4 - Tue, Aug 25
United Airlines Logo
5:00 am - 10:15 am
SEA
-
SNN
21h 15m
2 stops
United Airlines Logo
9:30 am - 11:24 pm
SNN
-
SEA
21h 54m
2 stops
$758United Airlines
Tue, Aug 4 - Tue, Aug 25
Lufthansa Logo
5:00 pm - 7:30 am
SEA
-
SNN
30h 30m
1 stop
Lufthansa Logo
9:30 am - 10:42 pm
SNN
-
SEA
21h 12m
1 stop
$812Lufthansa
Tue, Aug 4 - Tue, Aug 25
Lufthansa Logo
2:10 pm - 4:30 pm
SEA
-
ORK
18h 20m
1 stop
Lufthansa Logo
4:55 pm - 11:55 am
ORK
-
SEA
27h 00m
1 stop
$889Lufthansa
Tue, Sep 1 - Tue, Sep 8

Turkish Airlines flights from Seattle to Ireland

Our best Turkish Airlines deals on Seattle to Ireland flight tickets
Turkish Airlines
Apr 19
SEA7:10 pmSeattle/Tacoma Intl
19h 55m
1 stop
DUB11:05 pmDublin
May 5
DUB10:40 amDublin
38h 35m
1 stop
SEA5:15 pmSeattle/Tacoma Intl
$653
Turkish Airlines
Sep 15
SEA7:10 pmSeattle/Tacoma Intl
19h 55m
1 stop
DUB11:05 pmDublin
Sep 29
DUB5:35 amDublin
19h 40m
1 stop
SEA5:15 pmSeattle/Tacoma Intl
$664
Turkish Airlines
Sep 1
SEA7:10 pmSeattle/Tacoma Intl
19h 55m
1 stop
DUB11:05 pmDublin
Sep 10
DUB5:45 amDublin
19h 30m
1 stop
SEA5:15 pmSeattle/Tacoma Intl
$670

TAP AIR PORTUGAL flights from Seattle to Ireland

Our best TAP AIR PORTUGAL deals on Seattle to Ireland flight tickets
TAP AIR PORTUGAL
Sep 22
SEA11:55 pmSeattle/Tacoma Intl
40h 10m
2 stops
DUB12:05 amDublin
Oct 6
DUB6:50 pmDublin
35h 48m
2 stops
SEA10:38 pmSeattle/Tacoma Intl
$654
TAP AIR PORTUGAL
Sep 23
SEA11:30 amSeattle/Tacoma Intl
28h 35m
2 stops
DUB12:05 amDublin
Oct 6
DUB6:50 pmDublin
47h 29m
2 stops
SEA10:19 amSeattle/Tacoma Intl
$660
TAP AIR PORTUGAL
Sep 22
SEA11:30 amSeattle/Tacoma Intl
52h 35m
2 stops
DUB12:05 amDublin
Oct 6
DUB6:50 pmDublin
47h 29m
2 stops
SEA10:19 amSeattle/Tacoma Intl
$668

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 April 1, 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

Wed 8/19

12:00 pm-11:50 am

2 stops39h 50m

Dublin

Fri 9/4

12:40 pm-1:45 pm

1 stop33h 05m

$641

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Tue 9/8

3:55 pm-10:25 am

2 stops34h 30m

Dublin

Sat 9/26

8:00 pm-1:45 pm

2 stops25h 45m

$642

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Fri 8/21

3:55 pm-9:25 am

1 stop33h 30m

Dublin

Mon 8/31

7:50 pm-1:45 pm

2 stops25h 55m

$643

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Wed 4/15

7:00 pm-7:45 am

2 stops28h 45m

Dublin

Sun 5/3

1:00 pm-6:45 pm

1 stop13h 45m

$645

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Mon 4/13

3:40 pm-8:20 am

3 stops32h 40m

Dublin

Wed 4/29

9:40 am-9:40 am

2 stops32h 00m

$646

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sun 4/19

7:10 pm-11:05 pm

1 stop19h 55m

Dublin

Tue 5/5

10:40 am-5:15 pm

1 stop38h 35m

$653
Quickest round-trip

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Tue 8/4

5:00 am-10:15 am

2 stops21h 15m

Shannon

Tue 8/25

9:30 am-9:11 pm

2 stops19h 41m

$757

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Tue 8/4

5:00 am-10:15 am

2 stops21h 15m

Shannon

Tue 8/25

9:30 am-11:24 pm

2 stops21h 54m

$758

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Tue 8/4

5:00 pm-7:30 am

1 stop30h 30m

Shannon

Tue 8/25

9:30 am-10:42 pm

1 stop21h 12m

$812

SeattleCork

SEA - ORK

SEAORK

Seattle/Tacoma Intl

Tue 9/1

2:10 pm-4:30 pm

1 stop18h 20m

Cork

Tue 9/8

4:55 pm-11:55 am

1 stop27h 00m

$889

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 Wednesday when prices can be found for as low as $691. 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 $870. 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 $695. 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 $809.

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 $526 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 24% 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

$379

Fastest flight time

9h 05m

Direct flights

Mon, Tue, Wed, Fri, Sat and Sun

Airports in Ireland

77 airports
The best one-way flight to Ireland from Seattle in the past 72 hours is $379. The best round-trip flight deal from Seattle to Ireland found on momondo in the last 72 hours is $780.
The fastest flight from Seattle to Ireland takes 9h 05m
Direct flights go from Seattle to Ireland on Monday, Tuesday, Wednesday, Friday, Saturday and Sunday. There are no airlines offering direct flights.
There are 77 airports in Ireland. From Seattle there are direct flights to Dublin (DUB).
Search flight deals

Frequently asked questions about flying from Seattle to Ireland

  • 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
2,910 reviews
Search JetBlue flights
Air CanadaPriceFrom $341Free CancellationRating
7.1
10,880 reviews
Search Air Canada flights
IcelandairPriceFrom $347Free CancellationRating
7.0
630 reviews
Search Icelandair flights
IberiaPriceFrom $367Free CancellationRating
7.0
3,164 reviews
Search Iberia flights
Aer LingusPriceFrom $395Free CancellationRating
7.2
1,495 reviews
Search Aer Lingus flights
KLMPriceFrom $405Free CancellationRating
7.8
1,481 reviews
Search KLM flights
United AirlinesPriceFrom $407Free CancellationRating
7.4
9,533 reviews
Search United Airlines flights
British AirwaysPriceFrom $407Free CancellationRating
6.7
7,843 reviews
Search British Airways flights
LufthansaPriceFrom $456Free CancellationRating
6.8
7,882 reviews
Search Lufthansa flights
Scandinavian AirlinesPriceFrom $468Free CancellationRating
7.3
1,737 reviews
Search Scandinavian Airlines 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
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Fri 5/1
Fri 5/8
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Ireland

Popular cities in Ireland

Popular flights according to clicks in the last 7 days on momondo
Flights to Dublinfrom $472
Flights to Shannon, Clarefrom $528
Flights to Corkfrom $570
Flights to Milltown (Kerry)from $837
Flights to Knockfrom $631
Flights to Donegalfrom $920