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Cheap flights from Seattle to Ireland from C$ 375

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 28/3. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — DUB
14 Feb — 21 Feb1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Seattle to Ireland

Keep the following information in mind while searching for Seattle to Ireland flight deals. Data was last updated 15 January 2026.

Round-trip from

C$ 549

One-way from

C$ 375

Popular in

June

Cheapest in

November

Average price

C$ 767

Good one-way deal

C$ 696 or less
Icelandair
  • Icelandair
  • 25/4-9/5
  • 2 total stops
  • 23h 05m total
  • Seattle to Ireland
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28/3
  • 28/3
  • 2 total stops
  • 55h 45m total
  • Seattle to Ireland
Search Deals
Highest demand for flights based on searches. 20% potential increase in price (C$ 313 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease (C$ 55 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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Price to beat on a one-way flight from Seattle/Tacoma Intl to Ireland.
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Find 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 15 January 2026.

Sat 25/43:40 p.m.
SEA
-
DUB
1 stop11h 25m
Icelandair
Sat 9/52:15 p.m.
DUB
-
SEA
1 stop11h 40m
Icelandair
Deal found 14/1C$ 549
Wed 6/53:40 p.m.
SEA
-
DUB
1 stop13h 35m
Icelandair
Tue 12/52:15 p.m.
DUB
-
SEA
1 stop14h 25m
Icelandair
Deal found 15/1C$ 566
Mon 4/53:40 p.m.
SEA
-
DUB
1 stop13h 35m
Icelandair
Sun 10/512:15 p.m.
DUB
-
SEA
1 stop13h 40m
Icelandair
Deal found 15/1C$ 588
Thu 7/53:40 p.m.
SEA
-
DUB
1 stop11h 25m
Icelandair
Sat 16/52:15 p.m.
DUB
-
SEA
1 stop14h 25m
Icelandair
Deal found 15/1C$ 589
Mon 11/53:40 p.m.
SEA
-
DUB
1 stop13h 35m
Icelandair
Thu 21/52:15 p.m.
DUB
-
SEA
1 stop11h 40m
Icelandair
Deal found 13/1C$ 596
Mon 11/53:40 p.m.
SEA
-
DUB
1 stop13h 35m
Icelandair
Fri 22/512:15 p.m.
DUB
-
SEA
1 stop13h 40m
Icelandair
Deal found 13/1C$ 649
Sun 6/97:30 a.m.
SEA
-
DUB
1 stop16h 15m
United Airlines
Tue 22/99:20 a.m.
DUB
-
SEA
3 stops43h 51m
United Airlines
Deal found 13/1C$ 655
Tue 5/58:00 a.m.
SEA
-
DUB
1 stop15h 20m
United Airlines
Thu 28/59:20 a.m.
DUB
-
SEA
2 stops38h 29m
United Airlines
Deal found 15/1C$ 656
Sun 10/58:20 p.m.
SEA
-
DUB
1 stop12h 55m
British Airways
Fri 22/56:30 a.m.
DUB
-
SEA
2 stops20h 00m
British Airways
Deal found 13/1C$ 659
Sat 16/511:00 p.m.
SEA
-
DUB
1 stop24h 20m
United Airlines
Thu 28/59:50 a.m.
DUB
-
SEA
1 stop32h 30m
United Airlines
Deal found 14/1C$ 660
Wed 6/57:00 a.m.
SEA
-
DUB
2 stops16h 20m
United Airlines
Wed 20/59:50 a.m.
DUB
-
SEA
1 stop16h 40m
United Airlines
Deal found 15/1C$ 663
Tue 1/95:15 p.m.
SEA
-
DUB
2 stops30h 30m
United Airlines
Tue 8/99:20 a.m.
DUB
-
SEA
3 stops43h 51m
United Airlines
Deal found 14/1C$ 666

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 15 January 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

Thu 26/2

2:35 p.m.-10:15 a.m.

1 stop11h 40m

Dublin

Mon 2/3

11:30 a.m.-5:00 p.m.

1 stop13h 30m

C$ 675

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Fri 27/2

2:35 p.m.-10:15 a.m.

1 stop11h 40m

Dublin

Tue 10/3

11:30 a.m.-6:00 p.m.

1 stop13h 30m

C$ 677

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Mon 2/3

6:50 p.m.-5:45 p.m.

1 stop14h 55m

Dublin

Wed 11/3

10:00 a.m.-5:55 p.m.

1 stop14h 55m

C$ 680

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Wed 28/1

6:50 p.m.-5:45 p.m.

1 stop14h 55m

Dublin

Fri 5/6

6:30 a.m.-11:35 a.m.

1 stop13h 05m

C$ 680

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Mon 9/2

6:50 p.m.-9:05 p.m.

1 stop18h 15m

Dublin

Mon 16/2

8:40 p.m.-11:30 a.m.

1 stop22h 50m

C$ 680

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Mon 2/2

8:04 a.m.-10:15 a.m.

2 stops18h 11m

Dublin

Tue 17/2

6:40 a.m.-4:55 p.m.

1 stop18h 15m

C$ 680

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Tue 3/3

1:25 p.m.-3:40 p.m.

1 stop18h 15m

Dublin

Mon 9/3

7:45 p.m.-12:30 p.m.

1 stop23h 45m

C$ 680

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Tue 3/3

9:00 a.m.-9:55 a.m.

2 stops16h 55m

Dublin

Wed 11/3

8:00 a.m.-10:16 p.m.

1 stop21h 16m

C$ 681

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Wed 25/3

7:50 p.m.-4:35 p.m.

1 stop13h 45m

Dublin

Wed 1/4

6:30 a.m.-11:35 a.m.

1 stop13h 05m

C$ 685

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Tue 10/2

8:04 a.m.-10:15 a.m.

2 stops18h 11m

Dublin

Tue 17/2

6:40 a.m.-4:55 p.m.

1 stop18h 15m

C$ 685

Flights are sorted by cheapest round-trip flights first.

Deals found on 14/1

Showing 1-10 of 18 results
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$ 428). Flying from Seattle to Ireland in June is currently the most expensive (average of C$ 907). 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 15 January 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
1,435 reviews
Check prices

Food

6.6

Entertainment

6.9

Crew

8.0

Overall

7.2

Boarding

7.4

Comfort

7.1

Reviews

1 / 20
4.0
Okay

Catherine,Dec 2025

AGP - DUB

Flight out to Malaga was terrific on A330 but flight back on A320 no where as good. Seat was uncomfortable, sweet wrappers & toilet paper on the floor at my seat. Rubbish in holder of seat in front. All unpleasant. Flight itself was fine & crew otherwise very good.
Aer Lingus
7.2
Good
1,435 reviews
Aer Lingus
7.2
Good
1,435 reviews
Check prices

Food

6.6

Entertainment

6.9

Crew

8.0

Overall

7.2

Boarding

7.4

Comfort

7.1

Reviews

1 / 20
4.0
Okay

Catherine,Dec 2025

AGP - DUB

Flight out to Malaga was terrific on A330 but flight back on A320 no where as good. Seat was uncomfortable, sweet wrappers & toilet paper on the floor at my seat. Rubbish in holder of seat in front. All unpleasant. Flight itself was fine & crew otherwise very good.

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 24 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$ 675, Icelandair can have you in Ireland from Seattle in 11h 40m. 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: Iberia (67%), American Airlines (65%), Aer Lingus( 65%).

  • 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$ 706, our data indicates the cheapest price to be C$ 518. The most popular route (Seattle/Tacoma Intl - Dublin), is priced around C$ 803.

  • 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$ 428). Flying from Seattle to Ireland in June is currently the most expensive (average of C$ 907). 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 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 15 January 2026.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapestC$ 641AverageC$ 1,053FlexibilityNo 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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