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Cheap flights from Seattle to Ireland from C$ 554

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 16/4. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — DUB
1 Feb — 8 Feb1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Seattle to Ireland

Enter your travel dates to find the best prices.

Best flights from Seattle to Ireland
Discover carefully curated flight deals from Seattle to Ireland that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 2 January 2026.

Wed 22/412:08 p.m.SEA - DUB
1 stop15h 02mUnited Airlines
Tue 5/59:50 a.m.DUB - SEA
2 stops38h 03mUnited Airlines
Deal found 1/1C$ 661
Tue 28/48:20 p.m.SEA - DUB
1 stop12h 45mMultiple Airlines
Tue 5/59:40 a.m.DUB - SEA
1 stop14h 20mMultiple Airlines
Deal found 1/1C$ 663
Tue 10/22:35 p.m.SEA - DUB
1 stop11h 40mIcelandair
Tue 24/211:30 a.m.DUB - SEA
1 stop13h 30mIcelandair
Deal found 1/1C$ 670
Sat 7/29:59 p.m.SEA - DUB
1 stop26h 46mDelta
Fri 20/25:55 a.m.DUB - SEA
1 stop13h 45mDelta
Deal found 1/1C$ 677
Mon 9/27:10 a.m.SEA - DUB
2 stops16h 55mKLM
Mon 23/25:15 p.m.DUB - SEA
1 stop26h 25mKLM
Deal found 1/1C$ 690
Mon 9/312:25 p.m.SEA - DUB
1 stop14h 30mUnited Airlines
Wed 18/38:00 a.m.DUB - SEA
1 stop21h 16mUnited Airlines
Deal found 31/12C$ 671
Tue 10/21:40 p.m.SEA - DUB
1 stop18h 05mDelta
Fri 20/25:55 a.m.DUB - SEA
1 stop13h 45mDelta
Deal found 1/1C$ 677
Wed 25/29:00 a.m.SEA - DUB
2 stops16h 55mUnited Airlines
Fri 6/39:00 a.m.DUB - SEA
1 stop21h 16mUnited Airlines
Deal found 1/1C$ 674
Wed 11/22:15 p.m.SEA - DUB
1 stop33h 35mDelta
Wed 25/28:50 a.m.DUB - SEA
1 stop34h 50mDelta
Deal found 1/1C$ 679
Tue 3/28:40 a.m.SEA - DUB
2 stops15h 30mUnited Airlines
Tue 10/29:30 a.m.DUB - SEA
2 stops19h 42mUnited Airlines
Deal found 31/12C$ 679
Wed 11/22:15 p.m.SEA - DUB
1 stop33h 35mDelta
Tue 24/28:50 a.m.DUB - SEA
1 stop34h 50mDelta
Deal found 1/1C$ 679
Tue 10/27:10 a.m.SEA - DUB
2 stops24h 35mDelta
Wed 25/25:55 a.m.DUB - SEA
1 stop13h 45mDelta
Deal found 1/1C$ 683

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 2 January 2026.

Round-trip from

C$ 650

One-way from

C$ 554

Popular in

June

Cheapest in

November

Average price

C$ 727

Good round-trip deal

C$ 965 or less

Good one-way deal

C$ 687 or less
Icelandair
  • Icelandair
  • 8/2-18/2
  • 2 total stops
  • 25h 10m total
  • Seattle to Ireland
Search Deals
WestJet
  • WestJet
  • 16/3
  • 2 total stops
  • 58h 50m total
  • Seattle to Ireland
Search Deals
Highest demand for flights based on searches. 21% potential increase in price (C$ 329 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 55 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 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 2 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

Wed 22/4

12:08 p.m.-11:10 a.m.

1 stop15h 02m

Dublin

Tue 5/5

9:50 a.m.-3:53 p.m.

2 stops38h 03m

C$ 661

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Tue 28/4

8:20 p.m.-5:05 p.m.

1 stop12h 45m

Dublin

Tue 5/5

9:40 a.m.-4:00 p.m.

1 stop14h 20m

C$ 663

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Tue 10/2

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

1 stop11h 40m

Dublin

Tue 24/2

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

1 stop13h 30m

C$ 670

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Mon 9/3

12:25 p.m.-9:55 a.m.

1 stop14h 30m

Dublin

Wed 18/3

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

1 stop21h 16m

C$ 671

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Wed 25/2

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

2 stops16h 55m

Dublin

Fri 6/3

9:00 a.m.-10:16 p.m.

1 stop21h 16m

C$ 674

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sat 7/2

9:59 p.m.-8:45 a.m.

1 stop26h 46m

Dublin

Fri 20/2

5:55 a.m.-11:40 a.m.

1 stop13h 45m

C$ 677

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Tue 10/2

1:40 p.m.-3:45 p.m.

1 stop18h 05m

Dublin

Fri 20/2

5:55 a.m.-11:40 a.m.

1 stop13h 45m

C$ 677

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Wed 11/2

2:15 p.m.-7:50 a.m.

1 stop33h 35m

Dublin

Wed 25/2

8:50 a.m.-11:40 a.m.

1 stop34h 50m

C$ 679

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Tue 3/2

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

2 stops15h 30m

Dublin

Tue 10/2

9:30 a.m.-9:12 p.m.

2 stops19h 42m

C$ 679

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Wed 11/2

2:15 p.m.-7:50 a.m.

1 stop33h 35m

Dublin

Tue 24/2

8:50 a.m.-11:40 a.m.

1 stop34h 50m

C$ 679

Flights are sorted by cheapest round-trip flights first.

Deals found on 31/12

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$ 423). Flying from Seattle to Ireland in June is currently the most expensive (average of C$ 908). 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 2 January 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 2 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
1,418 reviews
Check prices

Crew

8.0

Boarding

7.4

Food

6.6

Overall

7.2

Entertainment

6.9

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
1,418 reviews
Aer Lingus
7.2
Good
1,418 reviews
Check prices

Crew

8.0

Boarding

7.4

Food

6.6

Overall

7.2

Entertainment

6.9

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 25 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$ 670, United Airlines 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$ 836, our data indicates the cheapest price to be C$ 513. The most popular route (Seattle/Tacoma Intl - Dublin), is priced around C$ 2,209.

  • 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$ 423). Flying from Seattle to Ireland in June is currently the most expensive (average of C$ 908). 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 2 January 2026.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapestC$ 633AverageC$ 1,039FlexibilityNo 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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