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$261+ Cheap flights from Seattle (SEA) to Ireland

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 6/6. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — DUB
Mar 31 — Apr 71
Mon 3/31
Mon 4/7
1 adult, Economy
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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 March 26, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$540
(Mytrip)

One-way from

$285
(oojo)

Popular in

June

Cheapest in

January

Average price

$599

Good round-trip deal

$701 or less

Good one-way deal

$556 or less
Provider with most accurate pricing for Seattle/Tacoma Intl-Dublin flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Dublin flights.
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From Seattle/Tacoma Intl to Ireland
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One-way flight from Seattle/Tacoma Intl to Ireland
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Highest demand for flights based on searches. 23% potential increase in price ($207 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($31 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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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

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 March 26, 2025.

This United Airlines deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1212:50 pmSEA - DUB
1 stop13h 15mUnited Airlines
Wed 11/269:00 amDUB - SEA
2 stops34h 40mUnited Airlines
Deal found 3/25$544
This FlightHub deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/137:16 amSEA - DUB
2 stops26h 59mScandinavian Airlines
Tue 5/207:05 pmDUB - SEA
1 stop26h 45mScandinavian Airlines
Deal found 3/25$545
This Mytrip deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/243:45 pmSEA - DUB
2 stops18h 35mMultiple Airlines
Thu 5/17:05 amDUB - SEA
2 stops21h 35mMultiple Airlines
Deal found 3/25$552
This Justfly.com deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/173:05 pmSEA - DUB
2 stops32h 05mAir Canada
Fri 11/289:00 amDUB - SEA
2 stops20h 55mAir Canada
Deal found 3/26$559
This oojo deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/153:45 pmSEA - DUB
1 stop13h 30mIcelandair
Wed 10/2212:15 pmDUB - SEA
1 stop16h 25mIcelandair
Deal found 3/26$588
This FlightHub deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/178:00 pmSEA - DUB
Nonstop9h 10mAer Lingus
Fri 11/284:30 pmDUB - SEA
Nonstop9h 45mAer Lingus
Deal found 3/26$608
This Booking.com deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/122:55 pmSEA - DUB
1 stop32h 50mLufthansa
Wed 5/219:20 amDUB - SEA
1 stop12h 53mLufthansa
Deal found 3/25$623
This JetBlue Airways deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/611:38 amSEA - DUB
1 stop13h 22mJetBlue
Wed 5/1411:30 amDUB - SEA
1 stop17h 24mJetBlue
Deal found 3/25$625
This KLM deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/2511:16 amSEA - SNN
1 stop15h 54mMultiple Airlines
Tue 6/31:05 pmSNN - SEA
1 stop15h 19mMultiple Airlines
Deal found 3/25$635
This Air France deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/256:00 amSEA - SNN
2 stops21h 10mAir France
Tue 6/31:05 pmSNN - SEA
1 stop17h 38mAir France
Deal found 3/25$640
This American Airlines deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/231:51 pmSEA - SNN
2 stops18h 19mAmerican Airlines
Wed 4/307:40 amSNN - SEA
2 stops23h 29mAmerican Airlines
Deal found 3/26$647
This United deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/175:07 amSEA - SNN
2 stops18h 23mUnited Airlines
Tue 9/3012:30 pmSNN - SEA
2 stops30h 56mUnited Airlines
Deal found 3/25$652

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 2,558,603 searches. Data last updated March 26, 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

Tue 5/13

7:16 am-6:15 pm

2 stops26h 59m

Dublin

Tue 5/20

7:05 pm-1:50 pm

1 stop26h 45m

$545

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Thu 4/24

3:45 pm-6:20 pm

2 stops18h 35m

Dublin

Thu 5/1

7:05 am-8:40 pm

2 stops21h 35m

$552

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Wed 5/7

11:40 am-8:15 am

1 stop12h 35m

Dublin

Wed 5/14

9:20 am-9:18 am

1 stop31h 58m

$621

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Mon 5/12

2:55 pm-7:45 am

1 stop32h 50m

Dublin

Wed 5/21

9:20 am-2:13 pm

1 stop12h 53m

$623

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Tue 5/6

11:38 am-9:00 am

1 stop13h 22m

Dublin

Wed 5/14

11:30 am-8:54 pm

1 stop17h 24m

$625

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Wed 8/13

7:20 am-7:45 am

1 stop16h 25m

Dublin

Tue 8/26

9:20 am-1:20 pm

2 stops36h 00m

$628

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Sun 5/25

11:16 am-11:10 am

1 stop15h 54m

Shannon

Tue 6/3

1:05 pm-8:24 pm

1 stop15h 19m

$635

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Sun 5/25

6:00 am-11:10 am

2 stops21h 10m

Shannon

Tue 6/3

1:05 pm-10:43 pm

1 stop17h 38m

$640

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Wed 4/23

1:51 pm-4:10 pm

2 stops18h 19m

Shannon

Wed 4/30

7:40 am-11:09 pm

2 stops23h 29m

$647

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Wed 9/17

5:07 am-7:30 am

2 stops18h 23m

Shannon

Tue 9/30

12:30 pm-11:26 am

2 stops30h 56m

$652

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/25

Showing 1-10 of 49 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 $509). Flying from Seattle to Ireland in June is currently the most expensive (average of $1,010). 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 March 26, 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 31% 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 March 17, 2024.

Travelers seeking maximum savings on their Seattle to Ireland flight should consider departing on Thursday 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.

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 1.9 - 3.1 inches per month. October is typically the wettest month, when rainfall can reach 3.1 in. February is typically the driest time to visit Ireland when rainfall is around 1.9 in.

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 60.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 41.0 F).

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 March 26, 2025.
Read reviews from past customers who have flown Delta, KLM and Finnair from Seattle to Ireland. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,891 reviews

Boarding

8.2

Comfort

8.0

Overall

8.0

Food

7.3

Entertainment

7.9

Crew

8.5

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
7,891 reviews
Delta
8.0
Very good
7,891 reviews

Boarding

8.2

Comfort

8.0

Overall

8.0

Food

7.3

Entertainment

7.9

Crew

8.5

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
1,319 reviews
Delta
8.0
Very good
7,891 reviews

Boarding

8.2

Comfort

8.0

Overall

8.0

Food

7.3

Entertainment

7.9

Crew

8.5

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.
Finnair
7.6
Good
1,266 reviews
Delta
8.0
Very good
7,891 reviews

Boarding

8.2

Comfort

8.0

Overall

8.0

Food

7.3

Entertainment

7.9

Crew

8.5

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.
SWISS
7.5
Good
1,569 reviews
Delta
8.0
Very good
7,891 reviews

Boarding

8.2

Comfort

8.0

Overall

8.0

Food

7.3

Entertainment

7.9

Crew

8.5

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
8,608 reviews
Delta
8.0
Very good
7,891 reviews

Boarding

8.2

Comfort

8.0

Overall

8.0

Food

7.3

Entertainment

7.9

Crew

8.5

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?

    Located just 11.4 mi from the city center, Seattle/Tacoma Intl (SEA) is the airport most travelers will use when flying to Ireland from Seattle.

  • How popular is this Seattle to Ireland flight route?

    This flight path from Seattle/Tacoma Intl to Ireland was viewed by 18 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?

    To fly one-way, consider booking your trip with TAP AIR PORTUGAL, which is currently one of the cheapest options available, starting at $285. JetBlue flights start at $345 while deals on Scandinavian Airlines start at $401 one-way.

  • What are the most popular routes from Seattle to Ireland?

    The most popular flight routes from Seattle to Ireland are Seattle/Tacoma Intl - Dublin, Seattle/Tacoma Intl - Shannon and Seattle/Tacoma Intl - Cork.

  • What are the most reliable airlines from Seattle to Ireland?

    No one likes to see their flight delayed. When booking a flight from Seattle to Ireland consider choosing American Airlines (81%), Aer Lingus (81%) or British Airways (81%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Seattle to Ireland?

    Looking for the cheapest flight from Seattle to Ireland? While on average our users pay $2,011, our data indicates the cheapest price to be $463. The most popular route (Seattle/Tacoma Intl - Dublin), is priced around $490.

  • 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 $509). Flying from Seattle to Ireland in June is currently the most expensive (average of $1,010). 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

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Alternative routes for Seattle to Ireland

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Seattle to Ireland

Discover the top 10 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 2,558,603 searches. Data last updated March 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$380Average$595FlexibilityNo cancel feeOn-time76%
Aer LingusCheapest$437Average$774FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$437Average$637FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$455Average$797FlexibilityNo cancel feeOn-time71%
Scandinavian AirlinesCheapest$473Average$488FlexibilityNo cancel feeOn-time77%
KLMCheapest$474Average$784FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$480Average$766FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$501Average$774FlexibilityNo cancel feeOn-time76%
DeltaCheapest$505Average$769FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$509Average$749FlexibilityNo cancel feeOn-time67%
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