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$344+ 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 5/29. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — SEA
Feb 27 — Mar 61
Thu 2/27
Thu 3/6
1 adult, Economy
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Cheap flight deals from Ireland to Seattle

Keep the following information in mind while searching for Ireland to Seattle flight deals. Data was last updated February 22, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$481
(Kiwi.com)

One-way from

$364
(Kiwi.com)

Popular in

July

Cheapest in

November

Average price

$617

Good one-way deal

$496 or less
Provider with most accurate pricing for Dublin-Seattle/Tacoma Intl flight deals.
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Provider most trusted by Cheapflights users for Dublin-Seattle/Tacoma Intl flights.
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From Ireland to Seattle/Tacoma Intl
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One-way flight from Ireland to Seattle/Tacoma Intl
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Highest demand for flights based on searches. 21% potential increase in price ($209 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($27 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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Price to beat on a one-way flight from Ireland to Seattle/Tacoma Intl.
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Find 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 February 22, 2025.

This Kiwi.com deal was found by Cheapflights users on 2/21. 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.
Wed 4/1611:35 amDUB - SEA
1 stop18h 25mMultiple Airlines
Tue 4/2211:59 pmSEA - DUB
1 stop21h 11mMultiple Airlines
Deal found 2/21$481
This Booking.com deal was found by Cheapflights users on 2/21. 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.
Wed 5/712:50 pmDUB - SEA
1 stop15h 38mWestJet
Tue 5/207:05 amSEA - DUB
1 stop19h 45mWestJet
Deal found 2/21$505
This Gotogate deal was found by Cheapflights users on 2/20. 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.
Fri 4/412:15 pmDUB - SEA
1 stop13h 35mIcelandair
Mon 4/73:45 pmSEA - DUB
1 stop11h 20mIcelandair
Deal found 2/20$580
This TravelUp deal was found by Cheapflights users on 2/22. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/221:25 pmDUB - SEA
1 stop30h 15mKLM
Sat 3/297:30 amSEA - DUB
1 stop19h 15mKLM
Deal found 2/22$614
This FlightHub deal was found by Cheapflights users on 2/21. 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.
Fri 6/67:05 pmDUB - SEA
1 stop26h 45mScandinavian Airlines
Sun 6/224:00 pmSEA - DUB
1 stop18h 15mScandinavian Airlines
Deal found 2/21$631
This Delta deal was found by Cheapflights users on 2/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/95:55 amDUB - SEA
1 stop13h 45mDelta
Mon 3/249:25 amSEA - DUB
2 stops23h 15mDelta
Deal found 2/22$637
This Finnair deal was found by Cheapflights users on 2/21. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/89:45 amDUB - SEA
1 stop14h 15mFinnair
Thu 5/295:40 pmSEA - DUB
1 stop15h 35mFinnair
Deal found 2/21$638
This FlightHub deal was found by Cheapflights users on 2/21. 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.
Fri 2/284:30 pmDUB - SEA
Nonstop9h 45mAer Lingus
Fri 3/78:00 pmSEA - DUB
Nonstop9h 10mAer Lingus
Deal found 2/21$643
This American Airlines deal was found by Cheapflights users on 2/22. 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.
Sun 3/22:05 pmDUB - SEA
1 stop16h 04mAmerican Airlines
Sun 3/1611:14 pmSEA - DUB
1 stop26h 26mAmerican Airlines
Deal found 2/22$667
This KLM deal was found by Cheapflights users on 2/22. 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.
Tue 4/85:10 pmORK - SEA
1 stop26h 35mKLM
Tue 4/156:10 pmSEA - ORK
1 stop21h 20mKLM
Deal found 2/22$668
This British Airways deal was found by Cheapflights users on 2/22. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/510:25 amDUB - SEA
1 stop14h 30mBritish Airways
Tue 3/187:50 pmSEA - DUB
1 stop14h 10mBritish Airways
Deal found 2/22$679
This oojo deal was found by Cheapflights users on 2/22. 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.
Tue 4/87:20 amORK - SEA
2 stops17h 39mBritish Airways
Tue 4/156:45 pmSEA - ORK
2 stops17h 05mBritish Airways
Deal found 2/22$706

Find flights from Ireland to Seattle within your budget

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 February 22, 2025.

Fly from

Ireland

Fly to

Seattle

Route

Depart

Return

Price

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Wed 4/16

11:35 am-10:00 pm

1 stop18h 25m

Seattle/Tacoma Intl

Tue 4/22

11:59 pm-5:10 am

1 stop21h 11m

$481

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Wed 5/7

12:50 pm-8:28 pm

1 stop15h 38m

Seattle/Tacoma Intl

Tue 5/20

7:05 am-10:50 am

1 stop19h 45m

$505

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Fri 4/4

12:15 pm-5:50 pm

1 stop13h 35m

Seattle/Tacoma Intl

Mon 4/7

3:45 pm-11:05 am

1 stop11h 20m

$580

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Sat 3/22

1:25 pm-12:40 pm

1 stop30h 15m

Seattle/Tacoma Intl

Sat 3/29

7:30 am-9:45 am

1 stop19h 15m

$614

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Fri 6/6

7:05 pm-1:50 pm

1 stop26h 45m

Seattle/Tacoma Intl

Sun 6/22

4:00 pm-6:15 pm

1 stop18h 15m

$631

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Sun 3/9

5:55 am-11:40 am

1 stop13h 45m

Seattle/Tacoma Intl

Mon 3/24

9:25 am-3:40 pm

2 stops23h 15m

$637

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Thu 5/8

9:45 am-4:00 pm

1 stop14h 15m

Seattle/Tacoma Intl

Thu 5/29

5:40 pm-5:15 pm

1 stop15h 35m

$638

CorkSeattle

ORK - SEA

ORKSEA

Cork

Tue 4/8

5:10 pm-11:45 am

1 stop26h 35m

Seattle/Tacoma Intl

Tue 4/15

6:10 pm-11:30 pm

1 stop21h 20m

$668

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Wed 5/7

3:20 pm-4:59 pm

Nonstop9h 39m

Seattle/Tacoma Intl

Tue 5/20

6:45 pm-11:45 am

Nonstop9h 00m

$696

CorkSeattle

ORK - SEA

ORKSEA

Cork

Tue 4/8

7:20 am-4:59 pm

2 stops17h 39m

Seattle/Tacoma Intl

Tue 4/15

6:45 pm-7:50 pm

2 stops17h 05m

$706

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/22

Showing 1-10 of 33 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.

Travel insights for flights from Ireland to Seattle

Get recent, data-driven insights about flights from Ireland to Seattle including ideal travel times, pricing trends, and more.

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

Currently, January is the cheapest month in which you can book a flight from Ireland to Seattle (average of $238). Flying from Ireland to Seattle in July is currently the most expensive (average of $411). 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 February 22, 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.

Rainfall in Seattle by month

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

In terms of precipitation, rainfall in Seattle ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Seattle when rainfall is around 0.7 in.

Temperature in Seattle by month

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

If weather is an important factor for your trip to Seattle, 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 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

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 February 22, 2025.
Read reviews from past customers who have flown Delta, KLM and Finnair from Ireland to Seattle. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,203 reviews

Crew

8.5

Food

7.3

Comfort

8.0

Boarding

8.2

Overall

8.0

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta
8.0
Very good
8,203 reviews
Delta
8.0
Very good
8,203 reviews

Crew

8.5

Food

7.3

Comfort

8.0

Boarding

8.2

Overall

8.0

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

KLM
7.8
Good
1,332 reviews
Delta
8.0
Very good
8,203 reviews

Crew

8.5

Food

7.3

Comfort

8.0

Boarding

8.2

Overall

8.0

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Finnair
7.6
Good
1,271 reviews
Delta
8.0
Very good
8,203 reviews

Crew

8.5

Food

7.3

Comfort

8.0

Boarding

8.2

Overall

8.0

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

United Airlines
7.4
Good
8,754 reviews
Delta
8.0
Very good
8,203 reviews

Crew

8.5

Food

7.3

Comfort

8.0

Boarding

8.2

Overall

8.0

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Turkish Airlines
7.3
Good
3,825 reviews
Delta
8.0
Very good
8,203 reviews

Crew

8.5

Food

7.3

Comfort

8.0

Boarding

8.2

Overall

8.0

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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 4 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 Ireland to Seattle one-way?

    One-way options have recently been found by users for as low as $364 on WestJet. Other airlines that offer cheap prices include Icelandair from $503 and Aer Lingus from $593 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 (40%), Aer Lingus (40%) and British Airways (40%).

  • What are the cheapest flights from Ireland to Seattle?

    On average you can expect to pay $1,315 for a flight from Ireland to Seattle. The cheapest flight overall is $492 while the most popular route, (Dublin - Seattle/Tacoma Intl) is currently priced at $477.

  • 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, January is the cheapest month in which you can book a flight from Ireland to Seattle (average of $238). Flying from Ireland to Seattle in July is currently the most expensive (average of $411). 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 Ireland?

Book flights to Ireland if you plan to visit one of these locations
SeaTac
Tukwila
Renton
Tacoma
Lacey
Ocean Shores
Leavenworth
Olympia
Federal Way
Centralia
Marysville
Cle Elum
Mukilteo
Aberdeen
Lakewood
Issaquah
Shoreline
Lynnwood
Shelton
Silverdale

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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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Malpensa to Portland flights
Leonardo da Vinci/Fiumicino to Portland flights

Top 3 airlines flying from Ireland to Seattle

Discover the top 3 airlines 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 February 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest$496Average$862FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$556Average$766FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$640Average$787FlexibilityNo cancel feeOn-time71%
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