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$276+ 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 5/5. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — DUB
May 29 — Jun 51
Fri 5/29
Fri 6/5
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 April 29, 2026.

This Justfly.com deal was found by Cheapflights users on 4/26. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1912:00 pm
SEA
-
DUB
2 stops39h 50m
Scandinavian Airlines
Thu 8/2712:40 pm
DUB
-
SEA
1 stop33h 05m
Scandinavian Airlines
Deal found 4/26$692
This Justfly.com deal was found by Cheapflights users on 4/26. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1912:00 pm
SEA
-
DUB
2 stops39h 50m
Scandinavian Airlines
Wed 8/2611:40 am
DUB
-
SEA
2 stops58h 05m
Scandinavian Airlines
Deal found 4/26$694
This Scandinavian Airlines deal was found by Cheapflights users on 4/24. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/223:55 pm
SEA
-
DUB
2 stops34h 30m
Scandinavian Airlines
Mon 8/317:50 pm
DUB
-
SEA
2 stops25h 55m
Scandinavian Airlines
Deal found 4/24$695
This FlightHub deal was found by Cheapflights users on 4/28. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/111:55 pm
SEA
-
DUB
2 stops40h 10m
TAP AIR PORTUGAL
Thu 10/156:50 pm
DUB
-
SEA
2 stops35h 48m
TAP AIR PORTUGAL
Deal found 4/28$696
This KAYAK deal was found by Cheapflights users on 4/25. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/83:55 pm
SEA
-
DUB
2 stops34h 30m
Scandinavian Airlines
Fri 9/1112:40 pm
DUB
-
SEA
1 stop33h 05m
Scandinavian Airlines
Deal found 4/25$700
This KAYAK deal was found by Cheapflights users on 4/25. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/113:55 pm
SEA
-
DUB
1 stop33h 30m
Scandinavian Airlines
Sun 9/207:15 pm
DUB
-
SEA
2 stops50h 30m
Scandinavian Airlines
Deal found 4/25$703
This KAYAK deal was found by Cheapflights users on 4/25. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/83:55 pm
SEA
-
DUB
2 stops34h 30m
Scandinavian Airlines
Thu 9/1711:10 am
DUB
-
SEA
2 stops34h 35m
Scandinavian Airlines
Deal found 4/25$704
This Mytrip deal was found by Cheapflights users on 4/25. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/107:00 pm
SEA
-
DUB
3 stops34h 00m
Multiple Airlines
Fri 5/151:00 pm
DUB
-
SEA
1 stop28h 40m
Multiple Airlines
Deal found 4/25$705
This FlightHub deal was found by Cheapflights users on 4/28. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/111:44 pm
SEA
-
DUB
2 stops40h 21m
TAP AIR PORTUGAL
Fri 9/185:30 am
DUB
-
SEA
2 stops25h 08m
TAP AIR PORTUGAL
Deal found 4/28$707
This Mytrip deal was found by Cheapflights users on 4/25. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/17:35 pm
SEA
-
DUB
3 stops28h 45m
WestJet
Mon 6/159:40 am
DUB
-
SEA
3 stops32h 00m
WestJet
Deal found 4/25$708
This FlightHub deal was found by Cheapflights users on 4/28. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/111:44 pm
SEA
-
DUB
2 stops40h 21m
TAP AIR PORTUGAL
Thu 9/106:50 pm
DUB
-
SEA
2 stops59h 48m
TAP AIR PORTUGAL
Deal found 4/28$710
This United Airlines deal was found by Cheapflights users on 4/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/75:00 am
SEA
-
SNN
2 stops18h 30m
United Airlines
Wed 9/169:30 am
SNN
-
SEA
1 stop14h 06m
United Airlines
Deal found 4/27$753

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 April 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$692
(Justfly.com)

One-way from

$276
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$672

Good round-trip deal

$985 or less

Good one-way deal

$466 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. 19% potential increase in price ($150 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($23 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 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 April 29, 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

Sat 8/22

3:55 pm-10:25 am

2 stops34h 30m

Dublin

Mon 8/31

7:50 pm-1:45 pm

2 stops25h 55m

$695
Quickest round-trip

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Mon 9/7

10:47 am-7:30 am

1 stop12h 43m

Shannon

Wed 9/16

9:30 am-3:36 pm

1 stop14h 06m

$753

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Tue 8/25

10:47 am-7:30 am

1 stop12h 43m

Shannon

Tue 9/8

12:30 pm-11:45 pm

1 stop19h 15m

$770

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Tue 8/4

7:05 pm-7:30 am

2 stops28h 25m

Shannon

Tue 8/25

9:30 am-11:24 pm

3 stops21h 54m

$775

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Mon 8/3

7:01 am-7:30 am

1 stop16h 29m

Shannon

Mon 8/24

9:30 am-10:42 pm

1 stop21h 12m

$820

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Tue 9/8

7:30 am-7:30 am

1 stop16h 00m

Dublin

Tue 9/15

9:20 am-2:27 pm

2 stops37h 07m

$848

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Thu 9/10

7:10 pm-11:05 pm

1 stop19h 55m

Dublin

Wed 9/16

5:35 am-5:15 pm

1 stop19h 40m

$849

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sun 9/13

7:10 pm-11:05 pm

1 stop19h 55m

Dublin

Sun 9/20

5:45 am-5:15 pm

1 stop19h 30m

$879

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sat 9/5

10:00 pm-10:45 am

1 stop28h 45m

Dublin

Thu 9/17

5:55 am-11:47 am

1 stop13h 52m

$880

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Fri 10/9

7:10 pm-9:35 am

1 stop30h 25m

Dublin

Tue 10/13

5:05 pm-5:15 pm

1 stop32h 10m

$889

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/25

Showing 1-10 of 46 resultsSorted by cheapest first
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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

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

Booking 25 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to Ireland. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, August is the cheapest month in which you can book a flight from Seattle to Ireland (average of $226). Flying from Seattle to Ireland in June is currently the most expensive (average of $455). 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.

What is the cheapest time of day to fly from SEA to IE?

Find hourly flight availability from Seattle to Ireland. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 29, 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to Ireland as you normally would.

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 April 29, 2026.
Read reviews from past customers who have flown United Airlines,Aer Lingus, andAmerican Airlines 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
9,680 reviews

Comfort

7.3

Overall

7.4

Boarding

7.7

Entertainment

7.1

Crew

8.1

Food

6.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.
United Airlines
7.4
Good
9,680 reviews
United Airlines
7.4
Good
9,680 reviews

Comfort

7.3

Overall

7.4

Boarding

7.7

Entertainment

7.1

Crew

8.1

Food

6.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.
Aer Lingus
7.3
Good
1,536 reviews
United Airlines
7.4
Good
9,680 reviews

Comfort

7.3

Overall

7.4

Boarding

7.7

Entertainment

7.1

Crew

8.1

Food

6.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.
American Airlines
7.1
Good
11,680 reviews
United Airlines
7.4
Good
9,680 reviews

Comfort

7.3

Overall

7.4

Boarding

7.7

Entertainment

7.1

Crew

8.1

Food

6.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.
Icelandair
7.0
Good
646 reviews
United Airlines
7.4
Good
9,680 reviews

Comfort

7.3

Overall

7.4

Boarding

7.7

Entertainment

7.1

Crew

8.1

Food

6.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.
British Airways
6.7
Okay
7,931 reviews
United Airlines
7.4
Good
9,680 reviews

Comfort

7.3

Overall

7.4

Boarding

7.7

Entertainment

7.1

Crew

8.1

Food

6.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.

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 10 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 18h 30m. Fly via United Airlines, Delta, or Turkish Airlines 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. JetBlue flights start at $190 while deals on WestJet start at $212 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 (79%), Aer Lingus (79%) or Iberia (79%) 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 $1,771, our data indicates the cheapest price to be $374. The most popular route (Seattle/Tacoma Intl - Dublin), is priced around $643.

  • 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, August is the cheapest month in which you can book a flight from Seattle to Ireland (average of $226). Flying from Seattle to Ireland in June is currently the most expensive (average of $455). 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

Browse thousands of different options on Cheapflights for your next trip

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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 April 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$101Average$621FlexibilityNo cancel feeOn-time62%
Air CanadaCheapest$341Average$581FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$341Average$723FlexibilityNo cancel feeOn-time69%
IcelandairCheapest$346Average$478FlexibilityNo cancel feeOn-time76%
IberiaCheapest$367Average$610FlexibilityNo cancel feeOn-time77%
Aer LingusCheapest$392Average$654FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$405Average$634FlexibilityNo cancel feeOn-time75%
British AirwaysCheapest$407Average$710FlexibilityNo cancel feeOn-time70%
Scandinavian AirlinesCheapest$444Average$512FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$456Average$605FlexibilityNo cancel feeOn-time76%

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