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Cheap flights from Seattle to Ireland from C$ 384

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 18/2. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — DUB
22 Jan — 29 Jan1
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 23 December 2025.

Wed 31/1210:52 a.m.SEA - DUB
2 stops15h 03mUnited Airlines
Tue 31/39:50 a.m.DUB - SEA
2 stops38h 47mUnited Airlines
Deal found 21/12C$ 871
Sat 27/1211:59 p.m.SEA - DUB
2 stops23h 31mUnited Airlines
Thu 8/110:40 a.m.DUB - SEA
1 stop32h 52mUnited Airlines
Deal found 22/12C$ 1,038
Tue 23/1211:59 p.m.SEA - DUB
2 stops50h 21mUnited Airlines
Wed 21/19:00 a.m.DUB - SEA
2 stops43h 57mUnited Airlines
Deal found 22/12C$ 1,068
Wed 24/1211:59 p.m.SEA - DUB
2 stops23h 31mUnited Airlines
Wed 28/19:00 a.m.DUB - SEA
2 stops18h 55mUnited Airlines
Deal found 22/12C$ 1,072
Mon 29/125:54 p.m.SEA - DUB
2 stops30h 16mUnited Airlines
Thu 8/110:40 a.m.DUB - SEA
2 stops18h 35mUnited Airlines
Deal found 20/12C$ 1,106
Fri 26/121:35 p.m.SEA - DUB
2 stops34h 35mUnited Airlines
Thu 8/110:40 a.m.DUB - SEA
1 stop37h 21mUnited Airlines
Deal found 22/12C$ 1,107
Wed 24/1211:59 p.m.SEA - DUB
2 stops25h 56mUnited Airlines
Thu 8/110:40 a.m.DUB - SEA
2 stops18h 35mUnited Airlines
Deal found 22/12C$ 1,126
Fri 26/123:10 p.m.SEA - DUB
1 stop18h 00mLufthansa
Wed 7/15:55 p.m.DUB - SEA
2 stops26h 15mLufthansa
Deal found 22/12C$ 1,542
Thu 25/1210:57 a.m.SEA - DUB
1 stop13h 13mLufthansa
Wed 7/111:45 a.m.DUB - SEA
1 stop32h 25mLufthansa
Deal found 22/12C$ 1,556

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 23 December 2025.

Round-trip from

C$ 655

One-way from

C$ 384

Popular in

June

Cheapest in

November

Average price

C$ 949

Good round-trip deal

C$ 968 or less

Good one-way deal

C$ 654 or less
United Airlines
  • United Airlines
  • 21/1-28/1
  • 3 total stops
  • 52h 13m total
  • Seattle to Ireland
Search Deals
18/2
  • 18/2
  • 2 total stops
  • 23h 50m total
  • Seattle to Ireland
Search Deals
Highest demand for flights based on searches. 21% potential increase in price (C$ 336 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 57 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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 23 December 2025.
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

Sat 7/2

3:30 p.m.-8:10 a.m.

2 stops32h 40m

Dublin

Wed 18/2

9:00 a.m.-6:03 p.m.

2 stops41h 03m

C$ 661

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sun 19/4

2:24 p.m.-9:45 a.m.

1 stop35h 21m

Dublin

Fri 1/5

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

1 stop33h 00m

C$ 662

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sat 18/4

11:59 p.m.-9:45 a.m.

1 stop25h 46m

Dublin

Fri 1/5

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

1 stop33h 00m

C$ 662

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Mon 20/4

11:59 p.m.-9:45 a.m.

1 stop25h 46m

Dublin

Tue 5/5

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

1 stop32h 30m

C$ 662

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Mon 16/2

7:00 a.m.-8:10 a.m.

1 stop17h 10m

Dublin

Wed 4/3

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

1 stop21h 16m

C$ 665

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Wed 4/2

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

1 stop11h 40m

Dublin

Wed 18/2

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

1 stop13h 30m

C$ 670

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Wed 4/2

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

1 stop11h 40m

Dublin

Sun 8/2

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

1 stop13h 30m

C$ 670

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Wed 4/2

6:50 p.m.-7:45 p.m.

1 stop16h 55m

Dublin

Mon 16/2

1:00 p.m.-11:30 a.m.

1 stop30h 30m

C$ 673

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sun 19/4

8:20 p.m.-7:45 a.m.

1 stop27h 25m

Dublin

Mon 4/5

8:55 p.m.-11:35 a.m.

1 stop22h 40m

C$ 679

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sat 7/2

9:59 p.m.-8:00 a.m.

2 stops26h 01m

Dublin

Tue 17/2

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

1 stop13h 45m

C$ 683

Flights are sorted by cheapest round-trip flights first.

Deals found on 21/12

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$ 424). Flying from Seattle to Ireland in June is currently the most expensive (average of C$ 910). 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 23 December 2025.

A simple way to save on the total cost of your ticket is to fly from Seattle to Ireland in the morning. If you’re flexible enough to do this you can expect to save up to 57% on your trip compared to booking a flight in the evening.

What is the cheapest day to fly from Seattle to Ireland?

Use this chart to determine the cheapest time to fly round-trip from Seattle to Ireland. Price data was last updated on 16 December 2024.

Travelers seeking maximum savings on their Seattle to Ireland flight should consider departing on Sunday mornings when fares are most often at their lowest. Thursday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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 23 December 2025.
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
1,412 reviews
Check prices

Entertainment

6.9

Crew

8.0

Overall

7.2

Food

6.6

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
1,412 reviews
Aer Lingus
7.2
Good
1,412 reviews
Check prices

Entertainment

6.9

Crew

8.0

Overall

7.2

Food

6.6

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 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$ 661, United Airlines can have you in Ireland from Seattle in 32h 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 (62%), Aer Lingus (62%), British Airways( 62%).

  • 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$ 1,049, our data indicates the cheapest price to be C$ 513. The most popular route (Seattle/Tacoma Intl - Dublin), is priced around C$ 2,217.

  • 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$ 424). Flying from Seattle to Ireland in June is currently the most expensive (average of C$ 910). 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 23 December 2025.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapestC$ 635AverageC$ 1,043FlexibilityNo 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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