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Cheap flights from Seattle to Ireland from C$ 364

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 21/2. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — DUB
7 Feb — 14 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 8 January 2026.

Round-trip from

C$ 650

One-way from

C$ 364

Popular in

June

Cheapest in

November

Average price

C$ 755

Good round-trip deal

C$ 972 or less

Good one-way deal

C$ 657 or less
British Airways
  • British Airways
  • 25/5-5/6
  • 3 total stops
  • 32h 05m total
  • Seattle to Ireland
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21/2
  • 21/2
  • 1 total stop
  • 32h 20m total
  • Seattle to Ireland
Search Deals
Highest demand for flights based on searches. 20% potential increase in price (C$ 312 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease (C$ 56 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 round-trip flight from Seattle/Tacoma Intl to Ireland.
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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 8 January 2026.

Mon 25/51:35 p.m.SEA - DUB
1 stop12h 05mBritish Airways
Fri 5/66:30 a.m.DUB - SEA
2 stops20h 00mBritish Airways
Deal found 7/1C$ 650
Sat 16/511:50 p.m.SEA - DUB
1 stop25h 55mUnited Airlines
Thu 28/59:50 a.m.DUB - SEA
1 stop32h 30mUnited Airlines
Deal found 8/1C$ 657
Mon 4/57:20 p.m.SEA - DUB
1 stop28h 25mAir Canada
Fri 15/59:50 a.m.DUB - SEA
1 stop12h 30mAir Canada
Deal found 8/1C$ 658
Mon 31/86:30 a.m.SEA - DUB
2 stops19h 15mUnited Airlines
Tue 15/99:20 a.m.DUB - SEA
3 stops43h 51mUnited Airlines
Deal found 6/1C$ 659
Tue 24/29:00 a.m.SEA - DUB
2 stops16h 55mUnited Airlines
Wed 4/39:00 a.m.DUB - SEA
2 stops41h 04mUnited Airlines
Deal found 6/1C$ 661
Wed 6/51:10 p.m.SEA - DUB
1 stop13h 30mUnited Airlines
Wed 13/59:50 a.m.DUB - SEA
1 stop12h 30mUnited Airlines
Deal found 8/1C$ 665
Wed 4/37:00 a.m.SEA - DUB
2 stops16h 30mUnited Airlines
Wed 11/38:00 a.m.DUB - SEA
2 stops42h 03mUnited Airlines
Deal found 7/1C$ 666
Sat 18/411:59 p.m.SEA - DUB
1 stop25h 46mUnited Airlines
Fri 1/59:20 a.m.DUB - SEA
1 stop33h 00mUnited Airlines
Deal found 8/1C$ 668
Wed 27/51:35 p.m.SEA - DUB
1 stop15h 25mBritish Airways
Tue 9/68:25 p.m.DUB - SEA
1 stop23h 10mBritish Airways
Deal found 7/1C$ 669
Mon 16/37:00 a.m.SEA - DUB
2 stops20h 20mUnited Airlines
Tue 31/39:50 a.m.DUB - SEA
2 stops40h 10mUnited Airlines
Deal found 6/1C$ 672
Wed 13/57:00 a.m.SEA - DUB
2 stops16h 20mUnited Airlines
Wed 27/59:50 a.m.DUB - SEA
1 stop16h 40mUnited Airlines
Deal found 7/1C$ 673

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 8 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

Mon 4/5

8:20 p.m.-6:15 p.m.

1 stop13h 55m

Dublin

Tue 19/5

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

1 stop13h 05m

C$ 675

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Wed 6/5

1:35 p.m.-1:30 p.m.

1 stop15h 55m

Dublin

Thu 14/5

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

1 stop13h 05m

C$ 675

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Tue 5/5

1:35 p.m.-4:45 p.m.

1 stop19h 10m

Dublin

Tue 19/5

12:50 p.m.-6:25 p.m.

1 stop13h 35m

C$ 675

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Wed 4/3

6:50 p.m.-4:35 p.m.

1 stop13h 45m

Dublin

Thu 19/3

8:40 p.m.-12:30 p.m.

1 stop22h 50m

C$ 676

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Tue 3/3

1:25 p.m.-11:15 a.m.

1 stop13h 50m

Dublin

Mon 16/3

3:30 p.m.-12:30 p.m.

1 stop28h 00m

C$ 676

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Wed 6/5

1:35 p.m.-7:35 p.m.

1 stop22h 00m

Dublin

Mon 18/5

8:30 p.m.-11:35 a.m.

1 stop23h 05m

C$ 676

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Wed 18/3

7:50 p.m.-9:05 p.m.

1 stop18h 15m

Dublin

Mon 23/3

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

1 stop23h 45m

C$ 676

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sun 1/2

5:45 p.m.-7:55 a.m.

2 stops30h 10m

Dublin

Tue 10/2

5:25 p.m.-2:36 p.m.

2 stops53h 11m

C$ 676

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Mon 2/3

12:43 p.m.-9:55 a.m.

1 stop13h 12m

Dublin

Wed 18/3

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

1 stop21h 16m

C$ 679

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Mon 4/5

7:23 a.m.-10:45 a.m.

2 stops19h 22m

Dublin

Fri 15/5

12:00 p.m.-11:26 p.m.

1 stop19h 26m

C$ 681

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/1

Showing 1-10 of 22 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$ 426). Flying from Seattle to Ireland in June is currently the most expensive (average of C$ 901). 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 8 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 8 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
1,427 reviews
Check prices

Comfort

7.1

Overall

7.2

Boarding

7.4

Food

6.6

Crew

8.0

Entertainment

6.9

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
1,427 reviews
Aer Lingus
7.2
Good
1,427 reviews
Check prices

Comfort

7.1

Overall

7.2

Boarding

7.4

Food

6.6

Crew

8.0

Entertainment

6.9

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$ 675, British Airways can have you in Ireland from Seattle in 13h 55m. 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: 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$ 837, our data indicates the cheapest price to be C$ 515. The most popular route (Seattle/Tacoma Intl - Dublin), is priced around C$ 763.

  • 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$ 426). Flying from Seattle to Ireland in June is currently the most expensive (average of C$ 901). 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 8 January 2026.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapestC$ 637AverageC$ 1,047FlexibilityNo 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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