Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from Seattle to Ireland from C$ 452

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 4/6. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — DUB
25 May — 1 Jun1
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 25 April 2026.

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 21/4C$ 951
Wed 19/811:44 p.m.
SEA
-
DUB
2 stops40h 21m
TAP AIR PORTUGAL
Fri 11/95:30 a.m.
DUB
-
SEA
2 stops49h 08m
TAP AIR PORTUGAL
Deal found 20/4C$ 973
Wed 19/82:30 p.m.
SEA
-
DUB
2 stops37h 20m
Scandinavian Airlines
Fri 11/912:40 p.m.
DUB
-
SEA
1 stop33h 05m
Scandinavian Airlines
Deal found 21/4C$ 977
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 23/4C$ 1,006
Fri 4/93:55 p.m.
SEA
-
DUB
1 stop33h 30m
Scandinavian Airlines
Fri 11/912:40 p.m.
DUB
-
SEA
1 stop33h 05m
Scandinavian Airlines
Deal found 24/4C$ 1,007
Sun 13/99:50 a.m.
SEA
-
DUB
2 stops24h 30m
Scandinavian Airlines
Mon 21/97:50 p.m.
DUB
-
SEA
2 stops25h 55m
Scandinavian Airlines
Deal found 23/4C$ 1,021
Mon 18/53:40 p.m.
SEA
-
DUB
2 stops24h 55m
Multiple Airlines
Mon 25/59:40 a.m.
DUB
-
SEA
3 stops32h 00m
Multiple Airlines
Deal found 20/4C$ 1,040
Fri 4/93:55 p.m.
SEA
-
DUB
1 stop33h 30m
Scandinavian Airlines
Sat 12/910:15 a.m.
DUB
-
SEA
1 stop35h 30m
Scandinavian Airlines
Deal found 24/4C$ 1,048
Mon 18/53:00 p.m.
SEA
-
DUB
2 stops36h 50m
Scandinavian Airlines
Mon 25/57:50 p.m.
DUB
-
SEA
2 stops25h 55m
Scandinavian Airlines
Deal found 20/4C$ 1,050

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 25 April 2026.

Round-trip from

C$ 951

One-way from

C$ 452

Popular in

June

Cheapest in

February

Average price

C$ 920

Good round-trip deal

C$ 1,134 or less
Scandinavian Airlines
  • Scandinavian Airlines
  • 22/8-31/8
  • 4 total stops
  • 60h 25m total
  • Seattle to Ireland
Search Deals
4/6
  • 4/6
  • 3 total stops
  • 40h 20m total
  • Seattle to Ireland
Search Deals
Highest demand for flights based on searches. 19% potential increase in price (C$ 280 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 46 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

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 25 April 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

Tue 8/9

3:55 p.m.-10:25 a.m.

2 stops34h 30m

Dublin

Sat 26/9

8:00 p.m.-1:45 p.m.

2 stops25h 45m

C$ 953

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Wed 19/8

12:00 p.m.-11:50 a.m.

2 stops39h 50m

Dublin

Fri 11/9

12:40 p.m.-1:45 p.m.

1 stop33h 05m

C$ 988

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Tue 1/9

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

1 stop32h 45m

Dublin

Fri 18/9

9:50 a.m.-9:52 a.m.

1 stop32h 02m

C$ 1,161
Quickest round-trip

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Wed 6/5

7:00 a.m.-7:20 a.m.

2 stops16h 20m

Dublin

Wed 13/5

9:20 a.m.-7:00 p.m.

2 stops17h 40m

C$ 1,206

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Fri 9/10

7:10 p.m.-9:35 a.m.

1 stop30h 25m

Dublin

Tue 13/10

5:05 p.m.-5:15 p.m.

1 stop32h 10m

C$ 1,217

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Thu 10/9

9:50 a.m.-12:40 p.m.

2 stops18h 50m

Dublin

Fri 18/9

11:10 a.m.-10:05 p.m.

2 stops18h 55m

C$ 1,281

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Wed 6/5

1:21 p.m.-4:00 p.m.

2 stops42h 39m

Dublin

Thu 14/5

10:40 a.m.-5:15 p.m.

1 stop38h 35m

C$ 1,329

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sat 22/8

10:54 a.m.-9:45 a.m.

2 stops38h 51m

Dublin

Wed 2/9

9:50 a.m.-10:07 a.m.

1 stop32h 17m

C$ 1,336

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sun 10/5

11:55 a.m.-11:10 a.m.

1 stop15h 15m

Dublin

Fri 12/6

9:50 a.m.-10:40 p.m.

1 stop20h 50m

C$ 1,338

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Wed 13/5

7:00 a.m.-10:40 a.m.

2 stops19h 40m

Dublin

Wed 20/5

9:20 a.m.-9:08 p.m.

1 stop19h 48m

C$ 1,356

Flights are sorted by cheapest round-trip flights first.

Deals found on 20/4

Showing 1-10 of 20 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

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 C$ 309). Flying from Seattle to Ireland in June is currently the most expensive (average of C$ 623). 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 25 April 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 25 April 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
7.3
Good
1,528 reviews
Check prices

Crew

8.1

Food

6.6

Overall

7.3

Boarding

7.4

Comfort

7.2

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

Wendy,Mar 2026

YYZ - DUB

I didn’t happen, my seat was given away because even though my bag was checked through to Dublin apparently the previous airline didn’t check me in. Even when I asked specifically at check in they said I and my luggage we both checked all the way through.
Aer Lingus
7.3
Good
1,528 reviews
Aer Lingus
7.3
Good
1,528 reviews
Check prices

Crew

8.1

Food

6.6

Overall

7.3

Boarding

7.4

Comfort

7.2

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

Wendy,Mar 2026

YYZ - DUB

I didn’t happen, my seat was given away because even though my bag was checked through to Dublin apparently the previous airline didn’t check me in. Even when I asked specifically at check in they said I and my luggage we both checked all the way through.

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 52 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$ 1,206, Turkish Airlines can have you in Ireland from Seattle in 16h 20m. 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 (79%), Aer Lingus (79%), Iberia( 79%).

  • 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$ 1,601, our data indicates the cheapest price to be C$ 1,118. The most popular route (Seattle/Tacoma Intl - Dublin), is priced around C$ 1,055.

  • 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 C$ 309). Flying from Seattle to Ireland in June is currently the most expensive (average of C$ 623). 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 25 April 2026.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapestC$ 631AverageC$ 962FlexibilityNo 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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.