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Cheap flights from Seattle to Ireland from C$ 572

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 18/3. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — DUB
6 Mar — 13 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 4 February 2026.

Tue 3/32:35 p.m.
SEA
-
DUB
1 stop11h 40m
Icelandair
Thu 12/311:30 a.m.
DUB
-
SEA
1 stop13h 30m
Icelandair
Deal found 2/2C$ 616
Tue 24/22:35 p.m.
SEA
-
DUB
1 stop11h 40m
Icelandair
Tue 3/311:30 a.m.
DUB
-
SEA
1 stop13h 30m
Icelandair
Deal found 2/2C$ 650
Mon 4/57:20 p.m.
SEA
-
DUB
1 stop28h 25m
United Airlines
Tue 12/59:50 a.m.
DUB
-
SEA
2 stops37h 58m
United Airlines
Deal found 2/2C$ 656
Tue 1/911:50 p.m.
SEA
-
DUB
2 stops23h 55m
United Airlines
Thu 10/99:20 a.m.
DUB
-
SEA
3 stops43h 51m
United Airlines
Deal found 2/2C$ 660
Tue 28/48:00 a.m.
SEA
-
DUB
1 stop18h 40m
United Airlines
Tue 5/59:50 a.m.
DUB
-
SEA
2 stops33h 49m
United Airlines
Deal found 3/2C$ 661
Tue 28/411:35 a.m.
SEA
-
DUB
2 stops38h 10m
United Airlines
Tue 12/59:50 a.m.
DUB
-
SEA
1 stop32h 30m
United Airlines
Deal found 3/2C$ 671
Tue 1/910:40 p.m.
SEA
-
DUB
2 stops25h 05m
United Airlines
Fri 11/99:50 a.m.
DUB
-
SEA
1 stop12h 32m
United Airlines
Deal found 3/2C$ 673
Wed 29/47:00 a.m.
SEA
-
DUB
2 stops16h 20m
United Airlines
Wed 13/59:50 a.m.
DUB
-
SEA
1 stop12h 30m
United Airlines
Deal found 2/2C$ 675
Wed 4/35:00 a.m.
SEA
-
DUB
2 stops18h 30m
United Airlines
Wed 11/38:00 a.m.
DUB
-
SEA
1 stop21h 16m
United Airlines
Deal found 3/2C$ 677
Tue 7/47:00 a.m.
SEA
-
DUB
1 stop18h 45m
United Airlines
Tue 14/49:50 a.m.
DUB
-
SEA
1 stop20h 03m
United Airlines
Deal found 3/2C$ 680

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 4 February 2026.

Round-trip from

C$ 616

One-way from

C$ 572

Popular in

June

Cheapest in

November

Average price

C$ 753

Good round-trip deal

C$ 668 or less

Good one-way deal

C$ 684 or less
Icelandair
  • Icelandair
  • 3/3-12/3
  • 2 total stops
  • 25h 10m total
  • Seattle to Ireland
Search Deals
United Airlines
  • United Airlines
  • 18/3
  • 2 total stops
  • 20h 20m total
  • Seattle to Ireland
Search Deals
Highest demand for flights based on searches. 19% potential increase in price (C$ 296 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 53 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 4 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

Tue 28/4

11:35 a.m.-9:45 a.m.

2 stops38h 10m

Dublin

Tue 12/5

9:50 a.m.-10:20 a.m.

1 stop32h 30m

C$ 671

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Wed 4/3

7:15 a.m.-9:55 a.m.

2 stops18h 40m

Dublin

Thu 12/3

9:30 a.m.-8:56 p.m.

2 stops18h 26m

C$ 698

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Mon 27/7

10:40 p.m.-9:45 a.m.

1 stop27h 05m

Dublin

Fri 14/8

8:50 a.m.-8:10 p.m.

1 stop19h 20m

C$ 709

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sat 21/3

7:00 a.m.-6:10 a.m.

2 stops40h 10m

Dublin

Tue 31/3

12:30 p.m.-8:53 p.m.

1 stop16h 23m

C$ 710

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sun 24/5

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

1 stop27h 26m

Dublin

Wed 3/6

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

1 stop33h 00m

C$ 718

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sat 25/4

11:59 p.m.-7:20 a.m.

2 stops23h 21m

Dublin

Sat 9/5

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

1 stop21h 00m

C$ 720

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Fri 20/3

11:59 p.m.-6:10 a.m.

2 stops47h 11m

Dublin

Tue 31/3

8:50 a.m.-11:27 p.m.

3 stops22h 37m

C$ 724

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Tue 24/3

3:35 p.m.-10:15 a.m.

1 stop11h 40m

Dublin

Fri 22/5

12:15 p.m.-5:55 p.m.

1 stop13h 40m

C$ 729

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sat 25/7

11:52 p.m.-8:15 a.m.

2 stops24h 23m

Dublin

Fri 14/8

8:50 a.m.-8:10 p.m.

1 stop19h 20m

C$ 738

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sat 4/7

10:40 p.m.-8:15 a.m.

2 stops25h 35m

Dublin

Tue 28/7

9:20 a.m.-10:32 a.m.

1 stop33h 12m

C$ 746

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/2

Showing 1-10 of 19 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$ 421). Flying from Seattle to Ireland in June is currently the most expensive (average of C$ 896). 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 4 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
1,444 reviews
Check prices

Comfort

7.1

Overall

7.2

Boarding

7.4

Food

6.6

Crew

8.0

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

SFO - DUB

The boarding went smoothly, the crew were great and helped me with an extra pillow, the food was good including complementary wine with dinner (economy seating), and I was able to sleep. The flight arrived early which helped with connections. Overall a great experience.
Aer Lingus
7.2
Good
1,444 reviews
Aer Lingus
7.2
Good
1,444 reviews
Check prices

Comfort

7.1

Overall

7.2

Boarding

7.4

Food

6.6

Crew

8.0

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

SFO - DUB

The boarding went smoothly, the crew were great and helped me with an extra pillow, the food was good including complementary wine with dinner (economy seating), and I was able to sleep. The flight arrived early which helped with connections. Overall a great experience.

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 23 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$ 698, United Airlines can have you in Ireland from Seattle in 18h 40m. 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 (50%), Aer Lingus (50%), Iberia( 50%).

  • 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$ 740, our data indicates the cheapest price to be C$ 509. The most popular route (Seattle/Tacoma Intl - Dublin), is priced around C$ 889.

  • 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$ 421). Flying from Seattle to Ireland in June is currently the most expensive (average of C$ 896). 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 4 February 2026.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapestC$ 630AverageC$ 960FlexibilityNo 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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