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Cheap flights from Seattle to Ireland from C$ 489

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 18/5. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — DUB
22 Apr — 29 Apr1
1 adult

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 17 April 2025.

Round-trip from

C$ 833

One-way from

C$ 489

Popular in

June

Cheapest in

January

Average price

C$ 986

Good round-trip deal

C$ 938 or less
Icelandair
  • Icelandair
  • 11/5-22/5
  • 2 total stops
  • 25h 05m total
  • Seattle to Ireland
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18/5
  • 18/5
  • 2 total stops
  • 53h 10m total
  • Seattle to Ireland
Search Deals
Highest demand for flights based on searches. 23% potential increase in price (C$ 408 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease (C$ 62 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Price to beat on a round-trip flight from Seattle/Tacoma Intl to Ireland.
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Find flight deals from Seattle to Ireland

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 17 April 2025.

Fri 12/93:45 p.m.SEA - DUB
1 stop13h 30mIcelandair
Thu 25/92:15 p.m.DUB - SEA
1 stop11h 35mIcelandair
Deal found 16/4C$ 833
Tue 6/58:15 a.m.SEA - DUB
1 stop15h 40mKLM
Wed 14/510:00 a.m.DUB - SEA
1 stop14h 42mKLM
Deal found 17/4C$ 835
Sat 6/94:00 p.m.SEA - DUB
1 stop16h 10mScandinavian Airlines
Thu 18/97:05 p.m.DUB - SEA
1 stop26h 55mScandinavian Airlines
Deal found 16/4C$ 839
Sun 27/411:30 p.m.SEA - DUB
2 stops25h 45mDelta
Tue 6/510:00 a.m.DUB - SEA
1 stop14h 07mDelta
Deal found 17/4C$ 840
Sun 7/92:55 p.m.SEA - DUB
1 stop32h 50mLufthansa
Mon 15/125:25 p.m.DUB - SEA
2 stops27h 55mLufthansa
Deal found 17/4C$ 844
Wed 13/812:20 a.m.SEA - DUB
2 stops22h 50mUnited Airlines
Thu 21/89:20 a.m.DUB - SEA
1 stop19h 21mUnited Airlines
Deal found 16/4C$ 846
Fri 2/511:35 a.m.SEA - DUB
1 stop12h 45mJetBlue
Wed 7/511:30 a.m.DUB - SEA
1 stop17h 24mJetBlue
Deal found 17/4C$ 869
Sun 27/48:20 p.m.SEA - DUB
1 stop27h 25mBritish Airways
Sun 4/58:25 p.m.DUB - SEA
1 stop23h 10mBritish Airways
Deal found 17/4C$ 886
Sun 28/98:25 a.m.SEA - DUB
1 stop15h 30mMultiple Airlines
Wed 31/1211:30 a.m.DUB - SEA
1 stop18h 53mMultiple Airlines
Deal found 17/4C$ 912
Sun 26/109:00 p.m.SEA - DUB
Nonstop9h 10mAer Lingus
Sun 2/111:30 p.m.DUB - SEA
1 stop17h 45mAer Lingus
Deal found 17/4C$ 982

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 17 April 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

Fri 12/9

3:45 p.m.-1:15 p.m.

1 stop13h 30m

Dublin

Thu 25/9

2:15 p.m.-5:50 p.m.

1 stop11h 35m

C$ 833

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Tue 6/5

8:15 a.m.-7:55 a.m.

1 stop15h 40m

Dublin

Wed 14/5

10:00 a.m.-4:42 p.m.

1 stop14h 42m

C$ 835

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sat 6/9

4:00 p.m.-4:10 p.m.

1 stop16h 10m

Dublin

Thu 18/9

7:05 p.m.-2:00 p.m.

1 stop26h 55m

C$ 839

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sun 27/4

10:55 p.m.-9:15 a.m.

2 stops26h 20m

Dublin

Wed 7/5

1:15 p.m.-8:23 p.m.

1 stop15h 08m

C$ 840

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Tue 9/9

7:05 a.m.-7:10 a.m.

3 stops40h 05m

Dublin

Sat 13/12

9:00 a.m.-9:50 a.m.

2 stops32h 50m

C$ 842

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sun 7/9

2:55 p.m.-7:45 a.m.

1 stop32h 50m

Dublin

Mon 15/12

5:25 p.m.-1:20 p.m.

2 stops27h 55m

C$ 844

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Wed 13/8

12:20 a.m.-7:10 a.m.

2 stops22h 50m

Dublin

Thu 21/8

9:20 a.m.-8:41 p.m.

1 stop19h 21m

C$ 846

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Fri 2/5

11:35 a.m.-8:20 a.m.

1 stop12h 45m

Dublin

Wed 7/5

11:30 a.m.-8:54 p.m.

1 stop17h 24m

C$ 869

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sun 27/4

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

1 stop27h 25m

Dublin

Sun 4/5

8:25 p.m.-11:35 a.m.

1 stop23h 10m

C$ 886

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Mon 5/5

6:45 p.m.-11:45 a.m.

Nonstop9h 00m

Dublin

Sat 24/5

4:10 p.m.-5:50 p.m.

Nonstop9h 40m

C$ 1,084

Flights are sorted by cheapest round-trip flights first.

Deals found on 16/4

Showing 1-10 of 20 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, January is the cheapest month in which you can book a flight from Seattle to Ireland (average of C$ 458). Flying from Seattle to Ireland in December is currently the most expensive (average of C$ 760). 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 17 April 2025.

A simple way to save on the total cost of your ticket is to fly from Seattle to Ireland at noon. If you’re flexible enough to do this you can expect to save up to 15% on your trip compared to booking a flight in the morning.

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 Monday evenings when fares are most often at their lowest. Friday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Seattle to Ireland

Explore weekly flight availability from Seattle to Ireland. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 17 April 2025.

The most flights from SEA to IE0 are scheduled on a Monday (3 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (2 on average).

Rainfall in Ireland by month

Plan your trip to Ireland by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Ireland ranges from 49.0 - 79.0 mm per month. October is typically the wettest month, when rainfall can reach 79.0 mm. February is typically the driest time to visit Ireland when rainfall is around 49.0 mm.

Temperature in Ireland by month

Plan your trip to Ireland by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Ireland, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 16.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 5.0 C).

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 17 April 2025.
See what other customers who have flown with Delta, KLM and United Airlines from Seattle to Ireland have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,917 reviews
Check prices

Entertainment

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,917 reviews
Delta
8.0
Very good
7,917 reviews
Check prices

Entertainment

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,329 reviews
Delta
8.0
Very good
7,917 reviews
Check prices

Entertainment

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,667 reviews
Delta
8.0
Very good
7,917 reviews
Check prices

Entertainment

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
JetBlue
7.3
Good
2,926 reviews
Delta
8.0
Very good
7,917 reviews
Check prices

Entertainment

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Scandinavian Airlines
7.3
Good
1,335 reviews
Delta
8.0
Very good
7,917 reviews
Check prices

Entertainment

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding 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 29 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • What are the cheapest airlines to fly from Seattle to Ireland one-way?

    The cheapest airlines for a one-way flight from Seattle to Ireland are WestJet (C$ 494), Icelandair (C$ 539), and United Airlines (C$ 678).

  • 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 (78%), Aer Lingus (78%), British Airways( 78%).

  • 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$ 1,245, our data indicates the cheapest price to be C$ 774. The most popular route (Seattle/Tacoma Intl - Dublin), is priced around C$ 880.

  • 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, January is the cheapest month in which you can book a flight from Seattle to Ireland (average of C$ 458). Flying from Seattle to Ireland in December is currently the most expensive (average of C$ 760). 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

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Top 3 airlines flying from Seattle to Ireland

Discover the top 3 airlines 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 17 April 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapestC$ 388AverageC$ 897FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Aer LingusCheapestC$ 571AverageC$ 940FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
IcelandairCheapestC$ 580AverageC$ 852FlexibilityNo cancel feeOn-time76%
Search Icelandair 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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