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Cheap flights from Seattle to Ireland from C$ 489

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 9/6. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — DUB
21 Mar — 28 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Seattle to Ireland

Enter your travel dates to find the best prices.

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 19 February 2026.

Fri 28/83:55 p.m.
SEA
-
DUB
2 stops32h 05m
Scandinavian Airlines
Mon 7/97:50 p.m.
DUB
-
SEA
2 stops25h 55m
Scandinavian Airlines
Deal found 17/2C$ 687
Fri 14/83:55 p.m.
SEA
-
DUB
1 stop33h 30m
Scandinavian Airlines
Mon 7/912:40 p.m.
DUB
-
SEA
1 stop33h 05m
Scandinavian Airlines
Deal found 18/2C$ 689
Fri 28/83:55 p.m.
SEA
-
DUB
2 stops32h 05m
Scandinavian Airlines
Sat 19/98:00 p.m.
DUB
-
SEA
2 stops25h 45m
Scandinavian Airlines
Deal found 18/2C$ 700
Sat 22/83:55 p.m.
SEA
-
DUB
2 stops34h 30m
Scandinavian Airlines
Sat 29/88:00 p.m.
DUB
-
SEA
2 stops25h 45m
Scandinavian Airlines
Deal found 16/2C$ 701
Fri 21/83:55 p.m.
SEA
-
DUB
1 stop33h 30m
Scandinavian Airlines
Mon 14/912:40 p.m.
DUB
-
SEA
1 stop33h 05m
Scandinavian Airlines
Deal found 18/2C$ 702
Fri 14/83:55 p.m.
SEA
-
DUB
2 stops32h 05m
Scandinavian Airlines
Fri 4/911:10 a.m.
DUB
-
SEA
2 stops34h 35m
Scandinavian Airlines
Deal found 18/2C$ 723
Fri 28/83:55 p.m.
SEA
-
DUB
1 stop33h 30m
Scandinavian Airlines
Thu 10/912:40 p.m.
DUB
-
SEA
1 stop33h 05m
Scandinavian Airlines
Deal found 18/2C$ 730
Fri 14/83:55 p.m.
SEA
-
DUB
2 stops32h 05m
Scandinavian Airlines
Sat 5/98:00 p.m.
DUB
-
SEA
2 stops25h 45m
Scandinavian Airlines
Deal found 18/2C$ 742
Fri 28/83:55 p.m.
SEA
-
DUB
1 stop33h 30m
Scandinavian Airlines
Sat 12/910:15 a.m.
DUB
-
SEA
1 stop35h 30m
Scandinavian Airlines
Deal found 18/2C$ 743
Tue 1/93:55 p.m.
SEA
-
DUB
2 stops34h 30m
Scandinavian Airlines
Thu 10/97:50 p.m.
DUB
-
SEA
2 stops25h 55m
Scandinavian Airlines
Deal found 16/2C$ 783
Fri 28/83:55 p.m.
SEA
-
DUB
1 stop33h 30m
Scandinavian Airlines
Fri 18/912:40 p.m.
DUB
-
SEA
1 stop33h 05m
Scandinavian Airlines
Deal found 18/2C$ 784
Sat 12/911:30 a.m.
SEA
-
DUB
1 stop12h 50m
JetBlue
Sat 19/911:40 a.m.
DUB
-
SEA
1 stop18h 44m
JetBlue
Deal found 19/2C$ 809

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 19 February 2026.

Round-trip from

C$ 689

One-way from

C$ 489

Popular in

June

Cheapest in

November

Average price

C$ 719

Good round-trip deal

C$ 669 or less
Scandinavian Airlines
  • Scandinavian Airlines
  • 14/8-3/9
  • 2 total stops
  • 66h 35m total
  • Seattle to Ireland
Search Deals
TAP AIR PORTUGAL
  • TAP AIR PORTUGAL
  • 9/6
  • 2 total stops
  • 28h 25m total
  • Seattle to Ireland
Search Deals
Highest demand for flights based on searches. 20% potential increase in price (C$ 308 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 49 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals
Price to beat on a round-trip 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 629,999 searches. Data last updated 19 February 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

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Mon 17/8

3:00 p.m.-7:45 a.m.

1 stop32h 45m

Dublin

Tue 25/8

9:50 a.m.-9:11 p.m.

3 stops43h 21m

C$ 854

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sun 2/8

11:14 p.m.-7:20 a.m.

1 stop24h 06m

Dublin

Thu 20/8

9:50 a.m.-9:11 p.m.

3 stops43h 21m

C$ 860

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sun 2/8

11:14 p.m.-10:40 a.m.

1 stop27h 26m

Dublin

Wed 19/8

9:50 a.m.-9:17 a.m.

1 stop31h 27m

C$ 860

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Wed 29/7

7:40 a.m.-7:20 a.m.

1 stop15h 40m

Dublin

Wed 19/8

9:50 a.m.-6:32 p.m.

1 stop16h 42m

C$ 867

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sun 2/8

11:14 p.m.-7:20 a.m.

1 stop24h 06m

Dublin

Fri 21/8

9:50 a.m.-2:22 p.m.

1 stop12h 32m

C$ 867

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Wed 29/7

7:40 a.m.-10:40 a.m.

1 stop19h 00m

Dublin

Fri 21/8

9:50 a.m.-2:22 p.m.

1 stop12h 32m

C$ 867

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Wed 18/3

7:00 a.m.-8:10 a.m.

1 stop18h 10m

Dublin

Wed 1/4

9:50 a.m.-4:41 p.m.

2 stops38h 51m

C$ 867

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Mon 17/8

11:50 p.m.-9:45 a.m.

1 stop25h 55m

Dublin

Tue 1/9

9:20 a.m.-10:37 a.m.

1 stop33h 17m

C$ 871

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sun 16/8

11:20 p.m.-7:20 a.m.

1 stop24h 00m

Dublin

Wed 2/9

9:20 a.m.-10:37 a.m.

1 stop33h 17m

C$ 872

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Wed 5/8

7:00 a.m.-9:45 a.m.

1 stop18h 45m

Dublin

Wed 19/8

9:50 a.m.-9:17 a.m.

1 stop31h 27m

C$ 873

Flights are sorted by cheapest round-trip flights first.

Deals found on 16/2

Showing 1-10 of 21 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 C$ 420). Flying from Seattle to Ireland in June is currently the most expensive (average of C$ 878). 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 19 February 2026.
Read through reviews of airlines operating flights from Seattle to Ireland, such as Aer Lingus. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Aer Lingus
7.2
Good
1,456 reviews
Check prices

Overall

7.2

Crew

8.1

Comfort

7.1

Food

6.6

Entertainment

7.0

Boarding

7.4

Reviews

1 / 20
10.0
Excellent

Griffith,Feb 2026

MAN - DUB

Great experience. Crew was friendly, food was better than what I have experienced with some other airlines and seat pitch was adequate. I would fly Aer Lingus again.
Aer Lingus
7.2
Good
1,456 reviews
Aer Lingus
7.2
Good
1,456 reviews
Check prices

Overall

7.2

Crew

8.1

Comfort

7.1

Food

6.6

Entertainment

7.0

Boarding

7.4

Reviews

1 / 20
10.0
Excellent

Griffith,Feb 2026

MAN - DUB

Great experience. Crew was friendly, food was better than what I have experienced with some other airlines and seat pitch was adequate. I would fly Aer Lingus again.

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?

    If you book a flight to Ireland from Seattle, you will be flying from Seattle/Tacoma Intl, which is the city’s only airport. Seattle/Tacoma Intl (SEA) is located 18.4 km from the centre of Seattle.

  • How popular is this Seattle to Ireland flight route?

    This flight path from Seattle/Tacoma Intl to Ireland was viewed by 22 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?

    For as low as C$ 860, United Airlines can have you in Ireland from Seattle in 32h 37m. Seattle and Ireland are separated by a distance of 7279 km.

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

    Before booking your flight to Ireland from Seattle, check out the most reliable airlines to get you to your destination on time: American Airlines (60%), Aer Lingus (60%), British Airways( 60%).

  • What are the cheapest flights from Seattle to Ireland?

    Looking for the cheapest flight from Seattle to Ireland? While on average our users pay C$ 789, our data indicates the cheapest price to be C$ 669. The most popular route (Seattle/Tacoma Intl - Dublin), is priced around C$ 1,614.

  • 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 C$ 420). Flying from Seattle to Ireland in June is currently the most expensive (average of C$ 878). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top airline flying from Seattle to Ireland

Discover the top airline 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 629,999 searches. Data last updated 19 February 2026.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapestC$ 631AverageC$ 962FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Seattle to Ireland?

When you search for this flight from Seattle to Ireland, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Seattle to Ireland?

Cheapflights simply makes it quick and affordable to book flights from Seattle to Ireland by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Seattle to Ireland with no change fees?

Yes! Cheapflights helps users easily find flights from Seattle to Ireland with no change fees.

Can Cheapflights notify me if prices for flights from Seattle to Ireland become cheaper?

Yes! Start tracking prices for Seattle to Ireland flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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