What airlines fly to Ireland?

Aer Lingus, Icelandair and American Airlines are the top three most popular airlines that fly to Ireland from Seattle according to our data. Aer Lingus is the first choice among our users, with 69% of people opting to fly with this airline when traveling to Ireland. Keep in mind that there are 13 different airlines that fly to Ireland on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Seattle/Tacoma Intl to Ireland?

United Airlines, Delta, and Aer Lingus are the most popular carriers operating from Seattle/Tacoma Intl to Ireland

How many flights depart from Seattle to Ireland on average per week?

24 flights are operational weekly from Seattle to Ireland as of August 2026. The most popular departure day for this route is Mon, with 17% of flights per week taking off on this day.

How many flights depart from Seattle to Ireland on average per day?

3 flights are operational daily from Seattle to Ireland as of August 2026. The most popular departure time for this route is 7:00PM, with 100% of flights per day taking off in the evening.

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?

As of August 2026, there are 13 operators available to choose from 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.

$245 Cheap Flights from Seattle to Ireland in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Seattle to Ireland

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

1:30 pm - 11:20 am

SEA

SNN

13h 50m

1 stop

4:50 pm - 11:35 am

SNN

SEA

26h 45m

1 stop

$598British Airways

Sat, Sep 12 - Sun, Sep 20

2:35 pm - 10:15 am

SEA

DUB

11h 40m

1 stop

11:30 am - 5:00 pm

DUB

SEA

13h 30m

1 stop

$715Icelandair

Thu, Jan 21 - Mon, Jan 25

3:40 pm - 11:05 am

SEA

DUB

11h 25m

1 stop

2:15 pm - 8:40 pm

DUB

SEA

14h 25m

1 stop

$717Icelandair

Tue, Sep 1 - Thu, Sep 10

7:20 pm - 10:50 am

SEA

DUB

31h 30m

3 stops

12:50 pm - 9:17 am

DUB

SEA

27h 27m

3 stops

$717Multiple Airlines

Wed, Oct 21 - Sun, Oct 25

3:40 pm - 8:20 am

SEA

DUB

32h 40m

3 stops

5:55 am - 8:40 pm

DUB

SEA

22h 45m

3 stops

$718Multiple Airlines

Thu, Aug 27 - Thu, Sep 3

11:45 pm - 8:20 am

SEA

DUB

24h 35m

1 stop

10:40 am - 10:48 pm

DUB

SEA

20h 08m

1 stop

$735JetBlue

Thu, Aug 27 - Thu, Sep 3

11:42 pm - 8:20 am

SEA

DUB

24h 38m

1 stop

11:30 am - 8:43 pm

DUB

SEA

17h 13m

1 stop

$736JetBlue

Sun, Sep 20 - Tue, Oct 6

7:10 pm - 12:15 pm

SEA

DUB

9h 05mnonstop

1:20 pm - 9:39 pm

DUB

SEA

16h 19m

1 stop

$795Aer Lingus

Sun, Sep 6 - Tue, Sep 15

11:04 pm - 10:15 am

SEA

SNN

27h 11m

2 stops

9:30 am - 4:07 pm

SNN

SEA

14h 37m

1 stop

$807United Airlines

Mon, Aug 31 - Tue, Sep 15

7:10 pm - 12:15 pm

SEA

DUB

9h 05mnonstop

1:00 pm - 8:59 pm

DUB

SEA

15h 59m

1 stop

$842Aer Lingus

Sun, Sep 20 - Mon, Feb 1

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JetBlue flights from Seattle to Ireland

Our best JetBlue deals on Seattle to Ireland flight tickets

JetBlue

Aug 27

SEA11:45 pmSeattle/Tacoma Intl

24h 35m

1 stop

DUB8:20 amDublin

Sep 3

DUB10:40 amDublin

20h 08m

1 stop

SEA10:48 pmSeattle/Tacoma Intl

$735

JetBlue

Sep 12

SEA11:42 pmSeattle/Tacoma Intl

24h 38m

1 stop

DUB8:20 amDublin

Sep 19

DUB11:30 amDublin

17h 14m

1 stop

SEA8:44 pmSeattle/Tacoma Intl

$740

JetBlue

Sep 5

SEA11:40 pmSeattle/Tacoma Intl

24h 40m

1 stop

DUB8:20 amDublin

Sep 15

DUB11:30 amDublin

17h 14m

1 stop

SEA8:44 pmSeattle/Tacoma Intl

$744

Icelandair flights from Seattle to Ireland

Our best Icelandair deals on Seattle to Ireland flight tickets

Icelandair

Jan 21

SEA2:35 pmSeattle/Tacoma Intl

11h 40m

1 stop

DUB10:15 amDublin

Jan 25

DUB11:30 amDublin

13h 30m

1 stop

SEA5:00 pmSeattle/Tacoma Intl

$715

Icelandair

Sep 1

SEA3:40 pmSeattle/Tacoma Intl

11h 25m

1 stop

DUB11:05 amDublin

Sep 10

DUB2:15 pmDublin

11h 40m

1 stop

SEA5:55 pmSeattle/Tacoma Intl

$717

Icelandair

Oct 16

SEA3:40 pmSeattle/Tacoma Intl

13h 35m

1 stop

DUB1:15 pmDublin

Oct 19

DUB2:15 pmDublin

11h 40m

1 stop

SEA5:55 pmSeattle/Tacoma Intl

$720

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Sat 9/12

1:30 pm-11:20 am

1 stop13h 50m

Shannon

Sun 9/20

4:50 pm-11:35 am

1 stop26h 45m

$598

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Thu 1/21

2:35 pm-10:15 am

1 stop11h 40m

Dublin

Mon 1/25

11:30 am-5:00 pm

1 stop13h 30m

$715

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Tue 9/1

3:40 pm-11:05 am

1 stop11h 25m

Dublin

Thu 9/10

2:15 pm-8:40 pm

1 stop14h 25m

$717

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Wed 10/21

7:20 pm-10:50 am

3 stops31h 30m

Dublin

Sun 10/25

12:50 pm-9:17 am

3 stops27h 27m

$717

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Thu 8/27

3:40 pm-8:20 am

3 stops32h 40m

Dublin

Thu 9/3

5:55 am-8:40 pm

3 stops22h 45m

$718

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Thu 8/27

11:45 pm-8:20 am

1 stop24h 35m

Dublin

Thu 9/3

10:40 am-10:48 pm

1 stop20h 08m

$735

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sun 9/20

11:42 pm-8:20 am

1 stop24h 38m

Dublin

Tue 10/6

11:30 am-8:43 pm

1 stop17h 13m

$736

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sun 9/6

7:10 pm-12:15 pm

Nonstop9h 05m

Dublin

Tue 9/15

1:20 pm-9:39 pm

1 stop16h 19m

$795

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Mon 8/31

11:04 pm-10:15 am

2 stops27h 11m

Shannon

Tue 9/15

9:30 am-4:07 pm

1 stop14h 37m

$807

Quickest round-trip

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sun 9/20

7:10 pm-12:15 pm

Nonstop9h 05m

Dublin

Mon 2/1

1:00 pm-8:59 pm

1 stop15h 59m

$842

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

Other information

What is the cheapest month to fly to Ireland?

In general, February 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 $464. If you aren’t able to travel to Ireland during the month of February, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $515.

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 $713. 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 $997. 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 afternoon. momondo users have found flights departing from Seattle to Ireland in the afternoon for as low as $751. 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 evening when prices are around $807.

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 from Seattle 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 $695 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 $617 on momondo.

What cabin class options are available on Seattle to Ireland flights?

There are 3 cabin classes available to choose from on Seattle 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 60% 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	$469
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 $469. The best round-trip flight deal from Seattle to Ireland found on momondo in the last 72 hours is $921.

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. The only airline offering direct flights is Aer Lingus.

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?
As of August 2026, there are 13 operators available to choose from 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?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Seattle to Ireland is Airbus A330-200 (77.48% of total bookings). The next most popular plane models are Airbus A330-900neo (6.69%), Boeing 787-9 Dreamliner (2.45%), and Boeing 777-300ER (2.06%).

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
JetBlue	PriceFrom $161	Free Cancellation	Rating 7.1 3,030 reviews	Search JetBlue flights
Air Canada	PriceFrom $341	Free Cancellation	Rating 7.1 11,415 reviews	Search Air Canada flights
Icelandair	PriceFrom $348	Free Cancellation	Rating 7.0 716 reviews	Search Icelandair flights
KLM	PriceFrom $405	Free Cancellation	Rating 7.8 1,552 reviews	Search KLM flights
United Airlines	PriceFrom $407	Free Cancellation	Rating 7.4 10,062 reviews	Search United Airlines flights
Aer Lingus	PriceFrom $438	Free Cancellation	Rating 7.3 1,683 reviews	Search Aer Lingus flights
Scandinavian Airlines	PriceFrom $444	Free Cancellation	Rating 7.4 1,912 reviews	Search Scandinavian Airlines flights
Lufthansa	PriceFrom $457	Free Cancellation	Rating 6.8 8,168 reviews	Search Lufthansa flights
Iberia	PriceFrom $457	Free Cancellation	Rating 7.0 3,263 reviews	Search Iberia flights
British Airways	PriceFrom $464	Free Cancellation	Rating 6.7 8,136 reviews	Search British Airways 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

Popular cities

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Other flights to Ireland

Airlines

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Complete your trip

Feeling lucky

Popular cities in Ireland

Flights to Dublinfrom $338

Flights to Shannon, Clarefrom $610

Flights to Corkfrom $652

Flights to Knockfrom $783

Flights to Milltown (Kerry)from $645

Flights to Donegalfrom $908

Cheap flights from Seattle to Ireland from $243

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 10/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Find the cheapest flights from Seattle to Ireland

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Cheap last minute flights

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JetBlue flights from Seattle to Ireland

Our best JetBlue deals on Seattle to Ireland flight tickets

Icelandair flights from Seattle to Ireland

Our best Icelandair deals on Seattle to Ireland flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Seattle to Ireland that are best for you.

See travel insights to Ireland from

How to get the cheapest flight ticket from Seattle to Ireland

What is the cheapest month to fly to Ireland?

What is the cheapest day to depart on your flight to Ireland?

What is the cheapest time of day to depart on your flight to Ireland?

What is the cheapest Seattle/Tacoma Intl to Ireland flight route?

How far in advance should I book a flight from Seattle to Ireland?

What cabin class options are available on Seattle to Ireland flights?

Can stopping save me money on Seattle to Ireland flights?

What is the cheapest airline that flies from Seattle/Tacoma Intl to Ireland?

What airlines fly to Ireland?

How many flights depart from Seattle to Ireland on average per day?

How many flights depart from Seattle to Ireland on average per week?

Cheap Seattle to Ireland flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Airports in Ireland

Frequently asked questions about flying 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

Why use momondo?

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.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Ireland

Popular cities in Ireland

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

Seattle flight routes

According to popular flight searches on momondo this year

Ireland flight routes

According to popular flight searches on momondo this year

Fly your favorite airline to Ireland

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Ireland

List of cabin classes available on flights landing in Ireland. Availability may vary depending on flight origin and airline.

Complete your trip to Ireland

Explore popular destinations other users love

According to popular flight searches on momondo this year