Which layover airport offers the lowest fares from Seattle to Dublin?

Flights via Helsinki (HEL) offer the lowest average round-trip price of $326.

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

Scandinavian Airlines is the most popular carrier operating from Seattle/Tacoma Intl to Dublin

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

As of December 2025, there are 12 flights per week flying from Seattle to Dublin. The most common day of the week flights depart is Mon, with 25% of flights taking off on this day.

Which airport is the most popular layover for flights between Seattle and Dublin?

Reykjavik (KEF) was the most common stop: 67% of momondo users choosing 1-stop flights on this route connected there.

What airlines fly to Dublin?

Aer Lingus, Icelandair and American Airlines are the top three most popular airlines that fly to Dublin from Seattle according to our data. Aer Lingus is the first choice among our users, with 68% of people opting to fly with this airline when traveling to Dublin. Keep in mind that there are 13 different airlines that fly to Dublin on a routine basis, so you have a few additional options to choose from.

Which layover airport has the shortest connection time from Seattle to Dublin?

Amsterdam (AMS) has the shortest average layover time for this route: 1h 33m.

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

The number of flights available between Seattle and Dublin is 1 per day as of December 2025. The most frequent departure time is 8:00PM, with 100% of daily flights leaving in the evening.

Which layover airport has the shortest travel time from Seattle to Dublin?

Flights connecting via London (LHR) have the shortest average one-way travel time: 12h 24m.

When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Dublin Airport?

Prices for flights from Seattle/Tacoma Intl Airport to Dublin Airport are updated daily.

How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Dublin Airport?

There are 13 operators available for flights from Seattle/Tacoma Intl Airport to Dublin Airport as of December 2025.

How old do you have to be to fly from Seattle/Tacoma Intl Airport to Dublin Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Dublin Airport.

What documentation or ID do you need to fly to Dublin Airport?

The necessary travel and health documents for your Dublin Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$274 Cheap Flights from Seattle to Dublin in 2025/26

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2:35 pm - 10:15 am

SEA

DUB

11h 40m1 stop

11:30 am - 5:00 pm

DUB

SEA

13h 30m1 stop

$422Icelandair

Mon, Jan 19 - Tue, Jan 27

2:35 pm - 10:15 am

SEA

DUB

11h 40m1 stop

11:30 am - 5:00 pm

DUB

SEA

13h 30m1 stop

$426Icelandair

Mon, Feb 23 - Fri, Mar 6

2:35 pm - 10:15 am

SEA

DUB

11h 40m1 stop

11:30 am - 5:00 pm

DUB

SEA

13h 30m1 stop

$428Icelandair

Thu, Feb 26 - Fri, Mar 6

3:40 pm - 11:05 am

SEA

DUB

11h 25m1 stop

2:15 pm - 5:55 pm

DUB

SEA

11h 40m1 stop

$429Icelandair

Tue, Apr 14 - Sat, Apr 25

2:35 pm - 10:15 am

SEA

DUB

11h 40m1 stop

11:30 am - 5:00 pm

DUB

SEA

13h 30m1 stop

$432Icelandair

Sun, Jan 18 - Sun, Jan 25

2:35 pm - 10:15 am

SEA

DUB

11h 40m1 stop

11:30 am - 6:00 pm

DUB

SEA

13h 30m1 stop

$433Icelandair

Wed, Mar 4 - Tue, Mar 17

3:40 pm - 1:15 pm

SEA

DUB

13h 35m1 stop

12:15 pm - 8:45 pm

DUB

SEA

16h 30m1 stop

$435Icelandair

Fri, Apr 24 - Fri, May 8

7:00 pm - 11:05 am

SEA

DUB

32h 05m1 stop

12:15 pm - 11:45 am

DUB

SEA

31h 30m1 stop

$436Icelandair

Mon, May 11 - Sun, May 24

2:35 pm - 10:15 am

SEA

DUB

11h 40m1 stop

11:30 am - 5:00 pm

DUB

SEA

13h 30m1 stop

$438Icelandair

Tue, Jan 20 - Wed, Jan 28

3:45 pm - 1:15 pm

SEA

DUB

13h 30m1 stop

2:15 pm - 5:50 pm

DUB

SEA

11h 35m1 stop

$440Icelandair

Sun, Apr 19 - Thu, Apr 23

Brussels Airlines flights from Seattle to Dublin

Our best Brussels Airlines deals on Seattle to Dublin flight tickets

Brussels Airlines

Apr 22

SEA10:55 amSeattle/Tacoma Intl

14h 50m

1 stop

DUB9:45 amDublin

May 6

DUB11:35 amDublin

15h 24m

1 stop

SEA6:59 pmSeattle/Tacoma Intl

$453

Find similar

Brussels Airlines

Dec 9

SEA10:40 amSeattle/Tacoma Intl

13h 30m

1 stop

DUB8:10 amDublin

Dec 18

DUB10:40 amDublin

16h 06m

1 stop

SEA6:46 pmSeattle/Tacoma Intl

$504

Find similar

Brussels Airlines

Dec 13

SEA10:40 amSeattle/Tacoma Intl

13h 30m

1 stop

DUB8:10 amDublin

Dec 18

DUB10:40 amDublin

16h 06m

1 stop

SEA6:46 pmSeattle/Tacoma Intl

$869

Find similar

United Airlines flights from Seattle to Dublin

Our best United Airlines deals on Seattle to Dublin flight tickets

United Airlines

Jan 21

SEA7:00 amSeattle/Tacoma Intl

17h 10m

1 stop

DUB8:10 amDublin

Jan 28

DUB9:00 amDublin

39h 01m

2 stops

SEA4:01 pmSeattle/Tacoma Intl

$456

Find similar

United Airlines

Mar 4

SEA7:00 amSeattle/Tacoma Intl

19h 20m

2 stops

DUB10:20 amDublin

Mar 11

DUB8:00 amDublin

42h 03m

2 stops

SEA7:03 pmSeattle/Tacoma Intl

$461

Find similar

United Airlines

Jan 19

SEA7:00 amSeattle/Tacoma Intl

16h 30m

2 stops

DUB7:30 amDublin

Jan 28

DUB9:00 amDublin

21h 16m

1 stop

SEA10:16 pmSeattle/Tacoma Intl

$474

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Fly from

Fly to

Route

Depart

Return

Price

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Mon 1/19

2:35 pm-10:15 am

1 stop11h 40m

Dublin

Tue 1/27

11:30 am-5:00 pm

1 stop13h 30m

$422

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Mon 2/23

2:35 pm-10:15 am

1 stop11h 40m

Dublin

Fri 3/6

11:30 am-5:00 pm

1 stop13h 30m

$426

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Thu 2/26

2:35 pm-10:15 am

1 stop11h 40m

Dublin

Fri 3/6

11:30 am-5:00 pm

1 stop13h 30m

$428

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Tue 4/14

3:40 pm-11:05 am

1 stop11h 25m

Dublin

Sat 4/25

2:15 pm-5:55 pm

1 stop11h 40m

$429

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sun 1/18

2:35 pm-10:15 am

1 stop11h 40m

Dublin

Sun 1/25

11:30 am-5:00 pm

1 stop13h 30m

$432

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Wed 3/4

2:35 pm-10:15 am

1 stop11h 40m

Dublin

Tue 3/17

11:30 am-6:00 pm

1 stop13h 30m

$433

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Fri 4/24

3:40 pm-1:15 pm

1 stop13h 35m

Dublin

Fri 5/8

12:15 pm-8:45 pm

1 stop16h 30m

$435

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Mon 5/11

7:00 pm-11:05 am

1 stop32h 05m

Dublin

Sun 5/24

12:15 pm-11:45 am

1 stop31h 30m

$436

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Tue 1/20

2:35 pm-10:15 am

1 stop11h 40m

Dublin

Wed 1/28

11:30 am-5:00 pm

1 stop13h 30m

$438

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sun 4/19

3:45 pm-1:15 pm

1 stop13h 30m

Dublin

Thu 4/23

2:15 pm-5:50 pm

1 stop11h 35m

$440

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Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Seattle to Dublin

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

Layovers

Other information

What is the cheapest month to fly to Dublin?

In general, November is the cheapest month to fly from Seattle to Dublin. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $498. If you’re not able to fly to Dublin in November, then January is your next best option. Flight prices from Seattle to Dublin during January average around $516.

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

The cheapest day to depart from Seattle to Dublin is on a Tuesday. Travelers who choose to depart for Dublin on a Tuesday will often find tickets for as low as $738. Flights from Seattle to Dublin on a Saturday will generally be more expensive and average around $916. 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 Dublin?

At noon is the cheapest time of day to fly from Seattle to Dublin when you can find flight prices for as low as $610. Flying to Dublin at noon is an ideal time because this is during off-peak travel hours. Flights in the afternoon are often more expensive with an average ticket price of $903.

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

Fly from Seattle/Tacoma Intl to Dublin for the best Seattle/Tacoma Intl - Dublin flight prices

How far in advance should I book a flight to Dublin?

You are more likely to see cheaper flights to Dublin from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Dublin for around $657 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Dublin from Seattle for as low as $581 on momondo.

What cabin class options are available on Seattle/Tacoma Intl to Dublin flights?

There are 2 cabin classes available to choose from on Seattle/Tacoma Intl to Dublin 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 Dublin flights?

You could potentially save up to 34% on your flight if you consider stops on a Seattle to Dublin flight.

How have Seattle to Dublin flight prices changed over time?

As of December 2025, prices for Seattle to Dublin flights are approximately 46% more expensive when compared to flights at the same time last year.

When to book flights from Seattle to Dublin

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Dublin according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Seattle to Dublin (SEA to DUB) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Dublin

Best Price Found	$458
Fastest flight time	9h 00m
Direct flights	Every day
Airports in Dublin	1 airport

The best one-way flight to Dublin from Seattle in the past 72 hours is $458. The best round-trip flight deal from Seattle to Dublin found on momondo in the last 72 hours is $619.

The fastest flight from Seattle to Dublin takes 9h 00m

Direct flights go from Seattle to Dublin every day.

There is 1 airport near Dublin: Dublin (DUB)

Search flight deals

How far is Seattle/Tacoma Intl to Dublin by plane?
Dublin is 4518.4 mi away from Seattle/Tacoma Intl. By plane, this route typically takes 11h 20m.
When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Dublin Airport?
Prices for flights from Seattle/Tacoma Intl Airport to Dublin Airport are updated daily.
How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Dublin Airport?
There are 13 operators available for flights from Seattle/Tacoma Intl Airport to Dublin Airport as of December 2025.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to Dublin Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Dublin Airport.
What documentation or ID do you need to fly to Dublin Airport?
The necessary travel and health documents for your Dublin Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Seattle to Dublin?
Based on momondo bookings for flights between Seattle and Dublin, the leading plane model is Airbus A330-200, making up 65.69% of the total bookings. Other popular models include Airbus A330-900neo with 12.32%, Boeing 787-10 Dreamliner with 4.36%, and Boeing 777-300ER with 4.36%.
What is the most popular airline from Seattle to Dublin?
Based on momondo bookings for flights between Seattle and Dublin, the leading airline is Aer Lingus, making up 60% of the total bookings. Other popular airlines include Icelandair with 20%, American Airlines with 6%, and British Airways with 3%.

Best airlines flying from Seattle to Dublin

Compare and see reviews for airlines that fly from Seattle to Dublin with momondo

Airline	Rating	Free Cancellation	Price
JetBlue	PriceFrom $101	Free Cancellation	Rating 7.2 2,899 reviews	Search JetBlue flights
Air France	PriceFrom $337	Free Cancellation	Rating 7.4 1,502 reviews	Search Air France flights
Air Canada	PriceFrom $341	Free Cancellation	Rating 7.1 10,500 reviews	Search Air Canada flights
Icelandair	PriceFrom $358	Free Cancellation	Rating 7.0 584 reviews	Search Icelandair flights
Iberia	PriceFrom $367	Free Cancellation	Rating 7.0 3,040 reviews	Search Iberia flights
KLM	PriceFrom $405	Free Cancellation	Rating 7.7 1,430 reviews	Search KLM flights
Aer Lingus	PriceFrom $412	Free Cancellation	Rating 7.2 1,384 reviews	Search Aer Lingus flights
British Airways	PriceFrom $418	Free Cancellation	Rating 6.7 7,562 reviews	Search British Airways flights
United Airlines	PriceFrom $431	Free Cancellation	Rating 7.4 9,066 reviews	Search United Airlines flights
Lufthansa	PriceFrom $467	Free Cancellation	Rating 6.8 7,612 reviews	Search Lufthansa flights

Aer Lingus Flights From Seattle to Dublin
Aer Lingus flies from Seattle to Dublin around 4 times per week, with 1,384 momondo users rating the airline 7.2/10. The cheapest Aer Lingus deal from Seattle to Dublin in the last 72 hours was $412 (round-trip), much lower than the average airfare cost of $716 for Aer Lingus flights on this route.
American Airlines Flights From Seattle to Dublin
American Airlines (7.2/10 from 11,047 reviews) operates around 4 flights from Seattle to Dublin in any given week. The average American Airlines airfare for this route is around $961, with deals from around $537 rare but found on momondo. Referenced prices are for round-trip Seattle to Dublin flight searches in the last 72 hours.

Kilkenny

Athlone

Swords

Dundalk

Malahide

Maynooth

Bray

Kildare

Mullingar

Drogheda

Naas

Arklow

Cavan

Castleknock

Wicklow

Leixlip

Thurles

Slane

Why use momondo?

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

It is quick and easy to find Seattle to Dublin flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Dublin that suits you.

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

Yes. momondo allows you to filter the results for Seattle to Dublin flights to just show those with flexible booking policies.

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

momondo provides multiple filters to help you find the best flight to Dublin from Seattle. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Price alerts on flights to Dublin from Seattle are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Dublin 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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Airports servicing Ireland

Cheap flights from Seattle to Dublin from $274

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 Dublin departing on 5/2. 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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Brussels Airlines flights from Seattle to Dublin

Our best Brussels Airlines deals on Seattle to Dublin flight tickets

United Airlines flights from Seattle to Dublin

Our best United Airlines deals on Seattle to Dublin flight tickets

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How to get the cheapest flight ticket from Seattle to Dublin

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 Dublin?

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

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

At noon is the cheapest time of day to fly from Seattle to Dublin when you can find flight prices for as low as $610. Flying to Dublin at noon is an ideal time because this is during off-peak travel hours. Flights in the afternoon are often more expensive with an average ticket price of $903.

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

Fly from Seattle/Tacoma Intl to Dublin for the best Seattle/Tacoma Intl - Dublin flight prices

How far in advance should I book a flight to Dublin?

What cabin class options are available on Seattle/Tacoma Intl to Dublin flights?

There are 2 cabin classes available to choose from on Seattle/Tacoma Intl to Dublin 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 Dublin flights?

You could potentially save up to 34% on your flight if you consider stops on a Seattle to Dublin flight.

How have Seattle to Dublin flight prices changed over time?

As of December 2025, prices for Seattle to Dublin flights are approximately 46% more expensive when compared to flights at the same time last year.

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

Scandinavian Airlines is the most popular carrier operating from Seattle/Tacoma Intl to Dublin

What airlines fly to Dublin?

Which airport is the most popular layover for flights between Seattle and Dublin?

Reykjavik (KEF) was the most common stop: 67% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from Seattle to Dublin?

Flights via Helsinki (HEL) offer the lowest average round-trip price of $326.

Which layover airport has the shortest travel time from Seattle to Dublin?

Flights connecting via London (LHR) have the shortest average one-way travel time: 12h 24m.

Which layover airport has the shortest connection time from Seattle to Dublin?

Amsterdam (AMS) has the shortest average layover time for this route: 1h 33m.

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

The number of flights available between Seattle and Dublin is 1 per day as of December 2025. The most frequent departure time is 8:00PM, with 100% of daily flights leaving in the evening.

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

As of December 2025, there are 12 flights per week flying from Seattle to Dublin. The most common day of the week flights depart is Mon, with 25% of flights taking off on this day.

When to book flights from Seattle to Dublin

Cheap Seattle to Dublin (SEA to DUB) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Dublin

Best Price Found

Fastest flight time

Direct flights

Airports in Dublin

How far is Seattle/Tacoma Intl to Dublin by plane?

When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Dublin Airport?

How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Dublin Airport?

How old do you have to be to fly from Seattle/Tacoma Intl Airport to Dublin Airport?

What documentation or ID do you need to fly to Dublin Airport?

What is the most popular plane model from Seattle to Dublin?

What is the most popular airline from Seattle to Dublin?

Best airlines flying from Seattle to Dublin

Compare and see reviews for airlines that fly from Seattle to Dublin with momondo

Aer Lingus Flights From Seattle to Dublin

American Airlines Flights From Seattle to Dublin

Traveling to a place near Dublin?

Why use momondo?

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

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

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

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

An easier way to manage your Dublin 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.