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$347+ Cheap flights from Ireland to Seattle (SEA)

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 5/8. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — SEA
ene. 11 — ene. 181
dom. 1/11
dom. 1/18
1 adult, Economy
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Cheap flight deals from Ireland to Seattle

Cheapest flights from Ireland to Seattle
Explore the most affordable flight options available from Ireland to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on diciembre 12, 2025.

This Gotogate deal was found by Cheapflights users on 12/11. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/224:30 pmDUB - SEA
Nonstop9h 50mAer Lingus
dom. 1/48:05 pmSEA - DUB
Nonstop9h 05mAer Lingus
Deal found 12/11$793
This American Airlines deal was found by Cheapflights users on 12/11. 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.
dom. 12/2112:55 pmDUB - SEA
1 stop28h 31mAmerican Airlines
mar. 12/306:50 pmSEA - DUB
1 stop30h 50mAmerican Airlines
Deal found 12/11$797
This American Airlines deal was found by Cheapflights users on 12/11. 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.
dom. 12/2112:55 pmDUB - SEA
1 stop28h 31mAmerican Airlines
dom. 12/285:23 amSEA - DUB
1 stop17h 47mAmerican Airlines
Deal found 12/11$817
This Kiwi.com deal was found by Cheapflights users on 12/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/2610:40 amDUB - SEA
1 stop16h 06mLufthansa
jue. 1/87:00 amSEA - DUB
1 stop17h 10mLufthansa
Deal found 12/10$836
This Kiwi.com deal was found by Cheapflights users on 12/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/2312:05 pmDUB - SEA
1 stop16h 52mMultiple Airlines
lun. 12/2910:52 amSEA - DUB
1 stop13h 18mMultiple Airlines
Deal found 12/11$840
This lastminute.com deal was found by Cheapflights users on 12/9. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 12/144:30 pmDUB - SEA
Nonstop9h 50mAer Lingus
dom. 12/288:05 pmSEA - DUB
Nonstop9h 05mAer Lingus
Deal found 12/9$842
This Gotogate deal was found by Cheapflights users on 12/10. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 12/149:00 amDUB - SEA
1 stop21h 16mAir Canada
lun. 12/298:00 pmSEA - DUB
2 stops27h 10mAir Canada
Deal found 12/10$851
This Gotogate deal was found by Cheapflights users on 12/10. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/154:30 pmDUB - SEA
Nonstop9h 50mAer Lingus
lun. 12/298:05 pmSEA - DUB
Nonstop9h 05mAer Lingus
Deal found 12/10$852
This United Airlines deal was found by Cheapflights users on 12/10. 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.
mié. 12/171:35 pmDUB - SEA
1 stop17h 03mUnited Airlines
mié. 12/243:50 pmSEA - DUB
2 stops32h 20mUnited Airlines
Deal found 12/10$854
This United Airlines deal was found by Cheapflights users on 12/11. 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.
jue. 12/189:30 amDUB - SEA
2 stops21h 17mUnited Airlines
lun. 12/298:57 amSEA - DUB
2 stops15h 13mUnited Airlines
Deal found 12/11$855
This Gotogate deal was found by Cheapflights users on 12/10. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 12/144:30 pmDUB - SEA
Nonstop9h 50mAer Lingus
lun. 12/298:05 pmSEA - DUB
Nonstop9h 05mAer Lingus
Deal found 12/10$858
This Air France deal was found by Cheapflights users on 12/11. 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.
dom. 12/216:00 amORK - SEA
1 stop13h 50mMultiple Airlines
sáb. 12/271:40 pmSEA - ORK
1 stop17h 20mMultiple Airlines
Deal found 12/11$872

Find flight deals from Ireland to Seattle

Keep the following information in mind while searching for Ireland to Seattle flight deals. Data was last updated diciembre 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

Gurufare
3 stars

Round-trip from

$539
(Booking.com)

One-way from

$347
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$677

Good round-trip deal

$698 or less

Good one-way deal

$619 or less
Provider with most accurate pricing for Dublin-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Dublin-Seattle/Tacoma Intl flights.
Search Deals
From Ireland to Seattle/Tacoma Intl
Search Deals
One-way flight from Ireland to Seattle/Tacoma Intl
Search Deals
Highest demand for flights based on searches. 19% potential increase in price ($174 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($21 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 Ireland to Seattle/Tacoma Intl.
Search Deals
Price to beat on a one-way flight from Ireland to Seattle/Tacoma Intl.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ireland to Seattle 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 diciembre 12, 2025.
Use the filters below to find and compare flights from Ireland to Seattle that are best for you.

Fly from

Ireland

Fly to

Seattle

Route

Depart

Return

Price

DublinSeattle

DUB - SEA

DUBSEA

Dublin

lun. 1/26

12:30 pm-10:25 pm

2 stops41h 55m

Seattle/Tacoma Intl

lun. 2/2

2:02 pm-11:45 am

2 stops37h 43m

$603

DublinSeattle

DUB - SEA

DUBSEA

Dublin

dom. 1/25

10:10 am-6:58 pm

2 stops40h 48m

Seattle/Tacoma Intl

dom. 2/1

2:02 pm-11:45 am

2 stops37h 43m

$660

DublinSeattle

DUB - SEA

DUBSEA

Dublin

lun. 1/26

11:30 am-5:00 pm

1 stop13h 30m

Seattle/Tacoma Intl

lun. 2/2

2:35 pm-10:15 am

1 stop11h 40m

$685

DublinSeattle

DUB - SEA

DUBSEA

Dublin

sáb. 2/7

11:30 am-5:00 pm

1 stop13h 30m

Seattle/Tacoma Intl

lun. 2/23

2:35 pm-10:15 am

1 stop11h 40m

$726

DublinSeattle

DUB - SEA

DUBSEA

Dublin

sáb. 1/24

11:30 am-5:00 pm

1 stop13h 30m

Seattle/Tacoma Intl

dom. 2/8

2:35 pm-10:15 am

1 stop11h 40m

$726

DublinSeattle

DUB - SEA

DUBSEA

Dublin

dom. 2/15

11:30 am-5:00 pm

1 stop13h 30m

Seattle/Tacoma Intl

lun. 3/2

2:35 pm-10:15 am

1 stop11h 40m

$726

DublinSeattle

DUB - SEA

DUBSEA

Dublin

dom. 1/25

11:30 am-5:00 pm

1 stop13h 30m

Seattle/Tacoma Intl

lun. 2/9

2:35 pm-10:15 am

1 stop11h 40m

$726

DublinSeattle

DUB - SEA

DUBSEA

Dublin

lun. 1/26

11:30 am-5:00 pm

1 stop13h 30m

Seattle/Tacoma Intl

mié. 2/11

2:35 pm-10:15 am

1 stop11h 40m

$726

DublinSeattle

DUB - SEA

DUBSEA

Dublin

vie. 1/30

11:30 am-5:00 pm

1 stop13h 30m

Seattle/Tacoma Intl

dom. 2/15

2:35 pm-10:15 am

1 stop11h 40m

$726

DublinSeattle

DUB - SEA

DUBSEA

Dublin

mar. 1/20

11:30 am-5:00 pm

1 stop13h 30m

Seattle/Tacoma Intl

mar. 2/3

2:35 pm-10:15 am

1 stop11h 40m

$726

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/11

Showing 1-10 of 31 results
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Best time to book a flight from Ireland to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Ireland 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 Ireland to Seattle

What is the cheapest month to book a flight from Ireland to Seattle?

Currently, March is the cheapest month in which you can book a flight from Ireland to Seattle (average of $463). Flying from Ireland to Seattle in July is currently the most expensive (average of $790). 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 IE to SEA?

Find hourly flight availability from Ireland to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated diciembre 12, 2025.

When flying from Ireland to Seattle, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How often are flights from Ireland to Seattle delayed?

About 11% of weekly flights between Ireland and Seattle have experienced delays in the past year, with the average delay time being 141 minutes.

What is the most punctual flight time for Ireland to Seattle flights?

Historically, flights departing in the early afternoon are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Tuesday tends to have the lowest number of delays on this route, whereas Saturday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Ireland to Seattle flights?

Over the last year, Aer Lingus have had the lowest number of delays on this route, with just 11% of flights being delayed.

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated diciembre 12, 2025.
Read through reviews of airlines operating flights from Ireland to Seattle, such as Aer Lingus. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Aer Lingus
7.2
Good
1,392 reviews

Boarding

7.4

Food

6.6

Entertainment

6.9

Crew

8.0

Comfort

7.1

Overall

7.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

DUB - EDI

Fine except for app. Couldn’t check in online - kept saying I couldn’t check in until the morning after my flight. On second leg I could check in but couldn’t get my boarding pass into my wallet. Thankfully I took a screenshot of it because I couldn’t retrieve it when we boarded - the app prohibited it.
Aer Lingus
7.2
Good
1,392 reviews
Aer Lingus
7.2
Good
1,392 reviews

Boarding

7.4

Food

6.6

Entertainment

6.9

Crew

8.0

Comfort

7.1

Overall

7.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

DUB - EDI

Fine except for app. Couldn’t check in online - kept saying I couldn’t check in until the morning after my flight. On second leg I could check in but couldn’t get my boarding pass into my wallet. Thankfully I took a screenshot of it because I couldn’t retrieve it when we boarded - the app prohibited it.

Related info for your journey

Find useful and relevant information for your journey from Ireland to Seattle. 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 into for flights to Seattle from Ireland?

    If you book a flight to Seattle from Ireland, you will be flying to Seattle/Tacoma Intl, which is the city’s only airport. Seattle/Tacoma Intl (SEA) is located 11.4 mi from the center of Seattle.

  • How popular is this Ireland to Seattle flight route?

    This flight path from Ireland to Seattle/Tacoma Intl was viewed by 2 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 Ireland to Seattle?

    A quick flight from Ireland to Seattle can take about 13h 30m. Scandinavian Airlines provides one of the quickest options available for as low as $685. There are 4523 mi between Ireland and Seattle. Both multi-stop and nonstop flights can be found to your destination and back.

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

    One-way options have recently been found by users for as low as $192 on WestJet. Other airlines that offer cheap prices include Icelandair from $414 and Aer Lingus from $508 one-way.

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

    The most popular route from Ireland to Seattle is Dublin - Seattle/Tacoma Intl. You may also consider Cork - Seattle/Tacoma Intl or Shannon - Seattle/Tacoma Intl.

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

    The top 3 most reliable airlines when flying from Ireland to Seattle are American Airlines (75%), British Airways (75%) and Aer Lingus (39%).

  • What are the cheapest flights from Ireland to Seattle?

    On average you can expect to pay $753 for a flight from Ireland to Seattle. The cheapest flight overall is $511 while the most popular route, (Dublin - Seattle/Tacoma Intl) is currently priced at $539.

  • Can I find deals for flights from Ireland to Seattle that include hotel bookings?

    Yes. In addition to deals on Ireland to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ireland to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ireland to Seattle.

  • Can I find deals for business class flights from Ireland to Seattle?

    Yes. Cheapflights offers flight deals from Ireland to Seattle 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 Ireland to Seattle?

    Currently, March is the cheapest month in which you can book a flight from Ireland to Seattle (average of $463). Flying from Ireland to Seattle in July is currently the most expensive (average of $790). 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

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
SeaTac
Lakewood
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Ocean Shores
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Alternative routes for Ireland to Seattle

See prices for flight routes from nearby airports that may be better suited for you.
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Leonardo da Vinci/Fiumicino to Seattle flights
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Zurich to Seattle flights
Bergamo to Seattle flights
Charles de Gaulle to Portland flights
Manchester to Seattle flights
Modlin to Seattle flights
Amsterdam to Portland flights
Vienna to Portland flights
Frederic Chopin to Portland flights
Naples to Seattle flights
Lisbon to Seattle flights
Prague to Seattle flights
Gatwick to Portland flights
Geneva to Seattle flights
Split to Portland flights
Marseille to Seattle flights
Sofia to Seattle flights
Toulouse to Seattle flights

Top airline flying from Ireland to Seattle

Discover the top airline that operate flights from Ireland to Seattle. 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 diciembre 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest$523Average$698FlexibilityNo cancel feeOn-timeN/A

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