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Cheap flights from Seattle to Ireland from C$ 395

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 3/8. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — DUB
29 Mar — 5 Apr1
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 27 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 25/2C$ 687
Sat 22/83:55 p.m.
SEA
-
DUB
2 stops34h 30m
Scandinavian Airlines
Mon 31/87:50 p.m.
DUB
-
SEA
2 stops25h 55m
Scandinavian Airlines
Deal found 24/2C$ 700
Tue 8/93:55 p.m.
SEA
-
DUB
2 stops34h 30m
Scandinavian Airlines
Sat 26/98:00 p.m.
DUB
-
SEA
2 stops25h 45m
Scandinavian Airlines
Deal found 25/2C$ 728
Sat 29/83:55 p.m.
SEA
-
DUB
2 stops34h 30m
Scandinavian Airlines
Sun 6/910:15 a.m.
DUB
-
SEA
2 stops22h 07m
Scandinavian Airlines
Deal found 26/2C$ 758
Tue 1/93:55 p.m.
SEA
-
DUB
2 stops34h 30m
Scandinavian Airlines
Mon 14/97:50 p.m.
DUB
-
SEA
2 stops25h 55m
Scandinavian Airlines
Deal found 24/2C$ 782
Sat 5/93:55 p.m.
SEA
-
DUB
2 stops34h 30m
Scandinavian Airlines
Tue 15/97:05 p.m.
DUB
-
SEA
2 stops35h 20m
Scandinavian Airlines
Deal found 25/2C$ 812
Fri 30/103:35 p.m.
SEA
-
DUB
1 stop11h 40m
Icelandair
Tue 3/1111:30 a.m.
DUB
-
SEA
1 stop13h 30m
Icelandair
Deal found 26/2C$ 823
Tue 5/53:40 p.m.
SEA
-
DUB
1 stop11h 25m
Icelandair
Tue 12/52:15 p.m.
DUB
-
SEA
1 stop11h 40m
Icelandair
Deal found 23/2C$ 843
Tue 5/53:40 p.m.
SEA
-
DUB
1 stop11h 25m
Icelandair
Wed 13/512:15 p.m.
DUB
-
SEA
1 stop13h 40m
Icelandair
Deal found 23/2C$ 848
Mon 4/57:00 p.m.
SEA
-
DUB
1 stop32h 05m
Icelandair
Wed 13/512:15 p.m.
DUB
-
SEA
1 stop13h 40m
Icelandair
Deal found 23/2C$ 852
Tue 25/83:55 p.m.
SEA
-
DUB
2 stops34h 30m
Scandinavian Airlines
Tue 1/97:05 p.m.
DUB
-
SEA
2 stops35h 20m
Scandinavian Airlines
Deal found 23/2C$ 853

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 27 February 2026.

Round-trip from

C$ 700

One-way from

C$ 395

Popular in

June

Cheapest in

November

Average price

C$ 718

Good round-trip deal

C$ 669 or less

Good one-way deal

C$ 813 or less
Scandinavian Airlines
  • Scandinavian Airlines
  • 22/8-31/8
  • 4 total stops
  • 60h 25m total
  • Seattle to Ireland
Search Deals
Aer Lingus
  • Aer Lingus
  • 3/8
  • Nonstop
  • 9h 05m total
  • Seattle to Ireland
Search Deals
Highest demand for flights based on searches. 20% potential increase in price (C$ 306 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 50 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
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 629,999 searches. Data last updated 27 February 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

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Mon 4/5

7:00 p.m.-11:05 a.m.

1 stop32h 05m

Dublin

Tue 12/5

2:15 p.m.-5:55 p.m.

1 stop11h 40m

C$ 870

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Wed 11/3

3:10 p.m.-3:45 p.m.

1 stop17h 35m

Dublin

Wed 18/3

5:55 a.m.-12:35 p.m.

1 stop13h 40m

C$ 879

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Thu 7/5

3:40 p.m.-11:05 a.m.

1 stop11h 25m

Dublin

Fri 15/5

12:15 p.m.-8:40 p.m.

1 stop16h 25m

C$ 884

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Wed 11/3

4:05 p.m.-10:10 p.m.

1 stop23h 05m

Dublin

Wed 18/3

5:55 a.m.-12:35 p.m.

1 stop13h 40m

C$ 885

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sat 22/8

5:00 p.m.-9:45 a.m.

1 stop32h 45m

Dublin

Wed 2/9

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

1 stop31h 27m

C$ 886

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Mon 20/4

11:10 a.m.-3:25 p.m.

2 stops20h 15m

Dublin

Thu 30/4

11:10 a.m.-10:31 p.m.

2 stops19h 21m

C$ 905

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Mon 3/8

1:00 p.m.-2:30 p.m.

1 stop17h 30m

C$ 469

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Mon 16/3

8:59 a.m.-9:55 a.m.

2 stops17h 56m

C$ 647

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Wed 11/3

11:25 a.m.-3:45 p.m.

2 stops21h 20m

C$ 654

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sat 7/3

11:47 p.m.-10:20 a.m.

2 stops26h 33m

C$ 661

Flights are sorted by cheapest round-trip flights first.

Deals found on 23/2

Showing 1-10 of 14 resultsSorted by cheapest first
1
2

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$ 877). 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 27 February 2026.

When flying from Seattle to Ireland, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 27 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
1,464 reviews
Check prices

Boarding

7.4

Comfort

7.1

Food

6.6

Overall

7.2

Entertainment

7.0

Crew

8.1

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
1,464 reviews
Aer Lingus
7.2
Good
1,464 reviews
Check prices

Boarding

7.4

Comfort

7.1

Food

6.6

Overall

7.2

Entertainment

7.0

Crew

8.1

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 19 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$ 879, Icelandair can have you in Ireland from Seattle in 17h 35m. Seattle and Ireland are separated by a distance of 7279 km. Both multi-stop and direct flights can be found to your destination and back.

  • 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$ 834, our data indicates the cheapest price to be C$ 669. The most popular route (Seattle/Tacoma Intl - Dublin), is priced around C$ 1,086.

  • 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$ 877). 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 27 February 2026.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapestC$ 631AverageC$ 953FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

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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