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 67% of people opting to fly with this airline when traveling to Ireland. Keep in mind that there are 12 different airlines that fly to Ireland on a routine basis, so you have a few additional options to choose from.

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

16 flights are operational weekly from Seattle to Ireland as of February 2026. The most popular departure day for this route is Mon, with 25% of flights per week taking off on this day.

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

Aer Lingus is the most popular carrier operating from Seattle/Tacoma Intl 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 February 2026, there are 12 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.

$271 Cheap Flights from Seattle to Ireland in 2026

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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.

12:22 pm - 10:15 am

SEA

SNN

37h 53m

2 stops

12:30 pm - 11:27 pm

SNN

SEA

18h 57m

2 stops

$554United Airlines

mar., abr. 14 - sáb., abr. 25

3:40 pm - 7:20 pm

SEA

DUB

19h 40m

2 stops

8:00 am - 5:55 pm

DUB

SEA

17h 55m

2 stops

$560Multiple Airlines

jue., abr. 16 - mié., abr. 22

12:22 pm - 10:15 am

SEA

SNN

37h 53m

2 stops

12:30 pm - 11:48 am

SNN

SEA

31h 18m

2 stops

$566United Airlines

mar., abr. 14 - sáb., abr. 25

2:35 pm - 10:15 am

SEA

DUB

11h 40m

1 stop

11:30 am - 6:00 pm

DUB

SEA

13h 30m

1 stop

$575Icelandair

mar., mar. 3 - mar., mar. 10

3:40 pm - 1:15 pm

SEA

DUB

13h 35m

1 stop

12:15 pm - 8:40 pm

DUB

SEA

16h 25m

1 stop

$577Icelandair

mié., abr. 29 - mié., may. 13

11:20 am - 11:10 am

SEA

SNN

15h 50m

1 stop

1:05 pm - 10:16 pm

SNN

SEA

17h 11m

1 stop

$649KLM

jue., may. 28 - mar., jun. 16

1:45 pm - 4:35 pm

SEA

ORK

18h 50m

1 stop

10:50 am - 11:45 am

ORK

SEA

32h 55m

1 stop

$650KLM

mar., mar. 31 - mar., abr. 7

7:15 am - 10:20 am

SEA

ORK

19h 05m

2 stops

6:15 am - 4:30 pm

ORK

SEA

18h 15m

1 stop

$654Delta

mié., abr. 1 - mié., abr. 8

6:00 am - 10:20 am

SEA

ORK

20h 20m

2 stops

6:15 am - 4:30 pm

ORK

SEA

18h 15m

1 stop

$655Delta

lun., mar. 30 - mar., abr. 7

8:20 pm - 11:20 am

SEA

SNN

31h 00m

1 stop

9:15 pm - 10:38 pm

SNN

SEA

33h 23m

2 stops

$667British Airways

lun., mar. 30 - lun., abr. 6

Icelandair flights from Seattle to Ireland

Our best Icelandair deals on Seattle to Ireland flight tickets

Icelandair

Mar 3

SEA2:35 pmSeattle/Tacoma Intl

11h 40m

1 stop

DUB10:15 amDublin

Mar 10

DUB11:30 amDublin

13h 30m

1 stop

SEA6:00 pmSeattle/Tacoma Intl

$575

Icelandair

Apr 29

SEA3:40 pmSeattle/Tacoma Intl

13h 35m

1 stop

DUB1:15 pmDublin

May 13

DUB12:15 pmDublin

16h 25m

1 stop

SEA8:40 pmSeattle/Tacoma Intl

$577

Icelandair

Apr 20

SEA3:40 pmSeattle/Tacoma Intl

13h 35m

1 stop

DUB1:15 pmDublin

Apr 29

DUB12:15 pmDublin

16h 25m

1 stop

SEA8:40 pmSeattle/Tacoma Intl

$578

Aer Lingus flights from Seattle to Ireland

Our best Aer Lingus deals on Seattle to Ireland flight tickets

Aer Lingus

Mar 2

SEA8:05 pmSeattle/Tacoma Intl

9h 05m

DUB1:10 pmDublin

Mar 18

DUB4:30 pmDublin

9h 50m

SEA7:20 pmSeattle/Tacoma Intl

$614

Aer Lingus

Mar 4

SEA8:05 pmSeattle/Tacoma Intl

9h 05m

DUB1:10 pmDublin

Mar 18

DUB4:30 pmDublin

9h 50m

SEA7:20 pmSeattle/Tacoma Intl

$632

Aer Lingus

Apr 14

SEA7:10 pmSeattle/Tacoma Intl

17h 25m

2 stops

SNN8:35 pmShannon

Apr 25

SNN5:25 pmShannon

31h 45m

2 stops

SEA5:10 pmSeattle/Tacoma Intl

$685

Fly from

Fly to

Route

Depart

Return

Price

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

mar. 4/14

12:22 pm-10:15 am

2 stops37h 53m

Shannon

sáb. 4/25

12:30 pm-11:27 pm

2 stops18h 57m

$554

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

jue. 4/16

3:40 pm-7:20 pm

2 stops19h 40m

Dublin

mié. 4/22

8:00 am-5:55 pm

2 stops17h 55m

$560

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

mar. 4/14

12:22 pm-10:15 am

2 stops37h 53m

Shannon

sáb. 4/25

12:30 pm-11:48 am

2 stops31h 18m

$566

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

mar. 3/3

2:35 pm-10:15 am

1 stop11h 40m

Dublin

mar. 3/10

11:30 am-6:00 pm

1 stop13h 30m

$575

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

mié. 4/29

3:40 pm-1:15 pm

1 stop13h 35m

Dublin

mié. 5/13

12:15 pm-8:40 pm

1 stop16h 25m

$577

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

jue. 5/28

11:20 am-11:10 am

1 stop15h 50m

Shannon

mar. 6/16

1:05 pm-10:16 pm

1 stop17h 11m

$649

SeattleCork

SEA - ORK

SEAORK

Seattle/Tacoma Intl

mar. 3/31

1:45 pm-4:35 pm

1 stop18h 50m

Cork

mar. 4/7

10:50 am-11:45 am

1 stop32h 55m

$650

SeattleCork

SEA - ORK

SEAORK

Seattle/Tacoma Intl

mié. 4/1

7:15 am-10:20 am

2 stops19h 05m

Cork

mié. 4/8

6:15 am-4:30 pm

1 stop18h 15m

$654

SeattleCork

SEA - ORK

SEAORK

Seattle/Tacoma Intl

lun. 3/30

6:00 am-10:20 am

2 stops20h 20m

Cork

mar. 4/7

6:15 am-4:30 pm

1 stop18h 15m

$655

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

lun. 3/30

8:20 pm-11:20 am

1 stop31h 00m

Shannon

lun. 4/6

9:15 pm-10:38 pm

2 stops33h 23m

$667

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, 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 January is also cheap. Prices for this month can be found on momondo for an average of $486.

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 $702. 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 $887. 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 $663. 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 $847.

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 $632 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 $563 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 11% 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	$343
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 $343. The best round-trip flight deal from Seattle to Ireland found on momondo in the last 72 hours is $617.

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?
As of February 2026, there are 12 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 (63.89% of total bookings). The next most popular plane models are Airbus A330-900neo (10.60%), Boeing 787-9 Dreamliner (5.17%), and Boeing 777-300ER (3.76%).

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 $101	Free Cancellation	Rating 7.2 2,897 reviews	Search JetBlue flights
Air Canada	PriceFrom $341	Free Cancellation	Rating 7.1 10,725 reviews	Search Air Canada flights
Icelandair	PriceFrom $353	Free Cancellation	Rating 7.1 614 reviews	Search Icelandair flights
Iberia	PriceFrom $367	Free Cancellation	Rating 7.0 3,116 reviews	Search Iberia flights
Aer Lingus	PriceFrom $401	Free Cancellation	Rating 7.2 1,455 reviews	Search Aer Lingus flights
KLM	PriceFrom $405	Free Cancellation	Rating 7.7 1,455 reviews	Search KLM flights
British Airways	PriceFrom $407	Free Cancellation	Rating 6.7 7,751 reviews	Search British Airways flights
United Airlines	PriceFrom $431	Free Cancellation	Rating 7.4 9,308 reviews	Search United Airlines flights
Scandinavian Airlines	PriceFrom $444	Free Cancellation	Rating 7.3 1,685 reviews	Search Scandinavian Airlines flights
Lufthansa	PriceFrom $457	Free Cancellation	Rating 6.8 7,787 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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Complete your trip

Feeling lucky

Popular cities in Ireland

Flights to Dublinfrom $298

Flights to Shannon, Clarefrom $347

Flights to Corkfrom $395

Flights to Milltown (Kerry)from $548

Flights to Knockfrom $607

Flights to Donegalfrom $751

Cheap flights from Seattle to Ireland from $271

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 3/8. 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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Find the cheapest flights from Seattle to Ireland

Cheap round-trip flights

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Icelandair flights from Seattle to Ireland

Our best Icelandair deals on Seattle to Ireland flight tickets

Aer Lingus flights from Seattle to Ireland

Our best Aer Lingus deals on Seattle to Ireland flight tickets

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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 to Ireland?

What cabin class options are available on Seattle/Tacoma Intl 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 week?

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

Fastest flight time

Direct flights

Airports in 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?

Why should I use momondo to find a flight deal from Seattle to Ireland?

Can I find flights from Seattle to Ireland with flexible booking policies on momondo?

How can momondo help me find flights from Seattle to Ireland?

I’m not ready to book a flight from Seattle to Ireland right now. Can momondo alert me if prices 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.

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

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According to popular flight searches on momondo this year