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Ireland

$257+ Cheap flights from Seattle (SEA) to Ireland

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/14. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — DUB
Feb 27 — Mar 61
Fri 2/27
Fri 3/6
1 adult, Economy
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Cheap flight deals from Seattle to Ireland

Cheapest flights from Seattle to Ireland
Explore the most affordable flight options available from Seattle to Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 28, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/213:40 pm
SEA
-
DUB
1 stop11h 25m
Icelandair
Tue 4/282:15 pm
DUB
-
SEA
1 stop11h 40m
Icelandair
Deal found 1/26$407
This Kiwi.com deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/143:40 pm
SEA
-
DUB
1 stop11h 25m
Icelandair
Thu 4/232:15 pm
DUB
-
SEA
1 stop14h 25m
Icelandair
Deal found 1/27$408
This CrystalTravel deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/223:40 pm
SEA
-
DUB
1 stop13h 35m
Icelandair
Wed 4/2912:15 pm
DUB
-
SEA
1 stop13h 40m
Icelandair
Deal found 1/26$419
This oojo deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/193:40 pm
SEA
-
DUB
1 stop13h 35m
Icelandair
Thu 4/232:15 pm
DUB
-
SEA
1 stop14h 25m
Icelandair
Deal found 1/28$427
This oojo deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/247:00 pm
SEA
-
DUB
1 stop32h 05m
Icelandair
Wed 4/2912:15 pm
DUB
-
SEA
1 stop13h 40m
Icelandair
Deal found 1/28$429
This FlightHub deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/163:40 pm
SEA
-
DUB
1 stop11h 25m
Icelandair
Thu 4/302:15 pm
DUB
-
SEA
1 stop14h 25m
Icelandair
Deal found 1/26$431
This FlightHub deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/157:00 pm
SEA
-
DUB
1 stop32h 05m
Icelandair
Thu 4/232:15 pm
DUB
-
SEA
1 stop14h 25m
Icelandair
Deal found 1/26$433
This oojo deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/283:40 pm
SEA
-
DUB
1 stop11h 25m
Icelandair
Tue 5/52:15 pm
DUB
-
SEA
1 stop11h 40m
Icelandair
Deal found 1/28$435
This oojo deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/247:00 pm
SEA
-
DUB
1 stop32h 05m
Icelandair
Fri 5/112:15 pm
DUB
-
SEA
1 stop16h 25m
Icelandair
Deal found 1/26$436
This CrystalTravel deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/153:40 pm
SEA
-
DUB
1 stop13h 35m
Icelandair
Wed 4/2212:15 pm
DUB
-
SEA
1 stop13h 40m
Icelandair
Deal found 1/26$442
This oojo deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/17:00 pm
SEA
-
DUB
1 stop32h 05m
Icelandair
Fri 5/812:15 pm
DUB
-
SEA
1 stop16h 25m
Icelandair
Deal found 1/26$444
This CrystalTravel deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/262:35 pm
SEA
-
DUB
1 stop11h 40m
Icelandair
Thu 3/511:30 am
DUB
-
SEA
1 stop13h 30m
Icelandair
Deal found 1/27$445

Find flight deals from Seattle to Ireland

Keep the following information in mind while searching for Seattle to Ireland flight deals. Data was last updated January 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$407
(Kiwi.com)

One-way from

$257
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$554

Good round-trip deal

$609 or less

Good one-way deal

$367 or less
Provider with most accurate pricing for Seattle/Tacoma Intl-Dublin flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Dublin flights.
Search Deals
From Seattle/Tacoma Intl to Ireland
Search Deals
One-way flight from Seattle/Tacoma Intl to Ireland
Search Deals
Highest demand for flights based on searches. 20% potential increase in price ($161 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($28 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals
Price to beat on a round-trip flight from Seattle/Tacoma Intl to Ireland.
Search Deals
Price to beat on a one-way flight from Seattle/Tacoma Intl to Ireland.
Search Deals

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated January 28, 2026.
Use the filters below to find and compare flights from Seattle to Ireland that are best for you.

Fly from

Seattle

Fly to

Ireland

Route

Depart

Return

Price

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Tue 2/24

6:50 pm-4:45 pm

1 stop13h 55m

Shannon

Tue 3/3

7:50 am-4:55 pm

1 stop17h 05m

$472

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Tue 4/28

8:00 am-7:20 am

1 stop15h 20m

Dublin

Tue 5/5

9:50 am-11:39 am

2 stops33h 49m

$482

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Wed 4/22

8:00 am-7:20 am

1 stop15h 20m

Dublin

Fri 5/1

9:20 am-3:48 pm

2 stops38h 28m

$482

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Wed 2/25

7:15 am-11:30 am

2 stops20h 15m

Shannon

Wed 3/4

7:50 am-9:17 pm

2 stops21h 27m

$486

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Wed 5/6

8:00 am-7:20 am

1 stop15h 20m

Dublin

Wed 5/13

9:50 am-2:20 pm

1 stop12h 30m

$487

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sun 4/12

11:59 pm-7:20 am

2 stops23h 21m

Dublin

Wed 4/22

9:50 am-4:37 pm

2 stops38h 47m

$487

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sun 4/12

11:59 pm-10:40 am

2 stops26h 41m

Dublin

Thu 4/23

9:50 am-4:37 pm

2 stops38h 47m

$487

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Wed 3/4

8:17 am-10:20 am

1 stop18h 03m

Dublin

Fri 3/13

8:00 am-10:16 pm

1 stop21h 16m

$491

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sun 3/1

12:18 pm-9:55 am

1 stop13h 37m

Dublin

Wed 3/11

8:00 am-10:16 pm

1 stop21h 16m

$491

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Tue 4/14

1:29 pm-4:10 pm

2 stops18h 41m

Shannon

Sat 4/25

7:30 am-10:26 pm

2 stops22h 56m

$536

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

Showing 1-10 of 38 results
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Best time to book a flight from Seattle to Ireland

Have a flexible travel schedule? Discover the best time to fly to Ireland from Seattle with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Seattle to Ireland

What is the cheapest month to book a flight from Seattle to Ireland?

Currently, November is the cheapest month in which you can book a flight from Seattle to Ireland (average of $308). Flying from Seattle to Ireland in June is currently the most expensive (average of $656). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Ireland

Get insights into the airlines that provide service to Ireland. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ireland. Reviews last updated January 28, 2026.
Read reviews from past customers who have flown United Airlines, American Airlines, and Aer Lingus from Seattle to Ireland. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,212 reviews

Overall

7.4

Food

6.6

Comfort

7.3

Crew

8.1

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,212 reviews
United Airlines
7.4
Good
9,212 reviews

Overall

7.4

Food

6.6

Comfort

7.3

Crew

8.1

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
American Airlines
7.2
Good
11,199 reviews
United Airlines
7.4
Good
9,212 reviews

Overall

7.4

Food

6.6

Comfort

7.3

Crew

8.1

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Aer Lingus
7.2
Good
1,442 reviews
United Airlines
7.4
Good
9,212 reviews

Overall

7.4

Food

6.6

Comfort

7.3

Crew

8.1

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Icelandair
7.1
Good
603 reviews
United Airlines
7.4
Good
9,212 reviews

Overall

7.4

Food

6.6

Comfort

7.3

Crew

8.1

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
British Airways
6.7
Okay
7,705 reviews
United Airlines
7.4
Good
9,212 reviews

Overall

7.4

Food

6.6

Comfort

7.3

Crew

8.1

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

Related info for your journey

Find useful and relevant information for your journey from Seattle to Ireland. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Seattle to Ireland?

    Located just 11.4 mi from the city center, Seattle/Tacoma Intl (SEA) is the airport most travelers will use when flying to Ireland from Seattle.

  • How popular is this Seattle to Ireland flight route?

    This flight path from Seattle/Tacoma Intl to Ireland was viewed by 14 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Seattle to Ireland?

    There are many flights that can get you from Seattle to Ireland in 13h 55m. Fly via American Airlines, United Airlines, or Lufthansa to get the fastest option. Airlines will cover a distance of 4485 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Seattle to Ireland one-way?

    To fly one-way, consider booking your trip with Icelandair, which is currently one of the cheapest options available, starting at $174. WestJet flights start at $234 while deals on British Airways start at $278 one-way.

  • What are the most popular routes from Seattle to Ireland?

    The most popular flight routes from Seattle to Ireland are Seattle/Tacoma Intl - Dublin, Seattle/Tacoma Intl - Shannon and Seattle/Tacoma Intl - Cork.

  • What are the most reliable airlines from Seattle to Ireland?

    No one likes to see their flight delayed. When booking a flight from Seattle to Ireland consider choosing American Airlines (61%), Aer Lingus (61%) or British Airways (61%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Seattle to Ireland?

    Looking for the cheapest flight from Seattle to Ireland? While on average our users pay $1,619, our data indicates the cheapest price to be $316. The most popular route (Seattle/Tacoma Intl - Dublin), is priced around $407.

  • Can I find deals for flights from Seattle to Ireland that include hotel bookings?

    Yes. In addition to deals on Seattle to Ireland flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Ireland?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Ireland.

  • Can I find deals for business class flights from Seattle to Ireland?

    Yes. Cheapflights offers flight deals from Seattle to Ireland by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Seattle to Ireland?

    Currently, November is the cheapest month in which you can book a flight from Seattle to Ireland (average of $308). Flying from Seattle to Ireland in June is currently the most expensive (average of $656). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Seattle to Ireland

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Seattle to Ireland

Discover the top 10 airlines that operate flights from Seattle to Ireland. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$101Average$402FlexibilityNo cancel feeOn-time62%
Air CanadaCheapest$341Average$625FlexibilityNo cancel feeOn-time67%
IcelandairCheapest$354Average$548FlexibilityNo cancel feeOn-time76%
IberiaCheapest$367Average$587FlexibilityNo cancel feeOn-time77%
Aer LingusCheapest$404Average$685FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$405Average$706FlexibilityNo cancel feeOn-time75%
British AirwaysCheapest$407Average$829FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$431Average$738FlexibilityNo cancel feeOn-time69%
Scandinavian AirlinesCheapest$444Average$488FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$457Average$708FlexibilityNo cancel feeOn-time76%

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