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$353+ Cheap flights from Ireland to Seattle (SEA)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/12. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — SEA
Jan 26 — Feb 21
Sun 1/26
Sun 2/2
1 adult, Economy
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Cheap flight deals from Ireland to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Ireland (IE0) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 21, 2025.

Round-trip from

$353
(Mytrip)

Good round-trip deal

$613 or less

Good one-way deal

$589 or less
From Ireland to Seattle/Tacoma Intl
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Price to beat on a round-trip flight from Ireland to Seattle/Tacoma Intl.
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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 January 21, 2025.

This Mytrip deal was found by Cheapflights users on 1/21. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/1211:30 amDUB - SEA
1 stop13h 30mIcelandair
Mon 3/243:35 pmSEA - DUB
1 stop11h 40mIcelandair
Deal found 1/21$353
This TravelUp deal was found by Cheapflights users on 1/20. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/138:30 pmDUB - SEA
1 stop22h 50mBritish Airways
Tue 3/187:50 pmSEA - DUB
1 stop14h 10mBritish Airways
Deal found 1/20$428
This flygcity.se deal was found by Cheapflights users on 1/20. 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 flygcity.se is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/98:00 amDUB - SEA
1 stop20h 30mAir Canada
Mon 3/247:00 amSEA - DUB
2 stops17h 00mAir Canada
Deal found 1/20$429
This Ticket deal was found by Cheapflights users on 1/20. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/91:25 pmDUB - SEA
1 stop30h 15mMultiple Airlines
Mon 3/247:30 amSEA - DUB
1 stop17h 55mMultiple Airlines
Deal found 1/20$435
This United Airlines deal was found by Cheapflights users on 1/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/99:20 amDUB - SEA
1 stop20h 53mUnited Airlines
Fri 5/302:55 pmSEA - DUB
1 stop32h 50mUnited Airlines
Deal found 1/20$437
This Bravofly deal was found by Cheapflights users on 1/20. 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 Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/94:30 pmDUB - SEA
Nonstop9h 45mAer Lingus
Mon 3/249:00 pmSEA - DUB
Nonstop9h 10mAer Lingus
Deal found 1/20$450
This Lufthansa deal was found by Cheapflights users on 1/20. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/1810:40 amDUB - SEA
1 stop14h 19mLufthansa
Wed 5/288:00 amSEA - DUB
1 stop18h 20mLufthansa
Deal found 1/20$459
This American Airlines deal was found by Cheapflights users on 1/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/92:05 pmDUB - SEA
1 stop14h 50mAmerican Airlines
Tue 3/187:50 pmSEA - DUB
1 stop16h 45mAmerican Airlines
Deal found 1/21$462
This Delta deal was found by Cheapflights users on 1/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/128:50 amDUB - SEA
2 stops20h 06mDelta
Mon 3/247:13 amSEA - DUB
2 stops22h 27mDelta
Deal found 1/21$474
This KLM deal was found by Cheapflights users on 1/20. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/116:00 amORK - SEA
1 stop18h 00mKLM
Sat 4/195:35 pmSEA - ORK
1 stop21h 55mKLM
Deal found 1/20$479
This Finnair deal was found by Cheapflights users on 1/21. 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.
Sat 5/36:00 pmDUB - SEA
1 stop30h 00mFinnair
Wed 5/145:40 pmSEA - DUB
1 stop15h 35mFinnair
Deal found 1/21$482
This American Airlines deal was found by Cheapflights users on 1/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/1111:45 amORK - SEA
2 stops42h 21mAmerican Airlines
Sat 4/191:30 pmSEA - ORK
1 stop13h 15mAmerican Airlines
Deal found 1/21$604

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 January 21, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Wed 3/12

11:30 am-6:00 pm

1 stop13h 30m

Seattle/Tacoma Intl

Mon 3/24

3:35 pm-10:15 am

1 stop11h 40m

$353

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Thu 3/13

8:30 pm-12:20 pm

1 stop22h 50m

Seattle/Tacoma Intl

Tue 3/18

7:50 pm-5:00 pm

1 stop14h 10m

$428

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Sun 3/9

8:00 am-8:30 pm

1 stop20h 30m

Seattle/Tacoma Intl

Mon 3/24

7:00 am-7:00 am

2 stops17h 00m

$429

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Sun 3/9

1:25 pm-12:40 pm

1 stop30h 15m

Seattle/Tacoma Intl

Mon 3/24

7:30 am-8:25 am

1 stop17h 55m

$435

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Fri 5/9

9:20 am-10:13 pm

1 stop20h 53m

Seattle/Tacoma Intl

Fri 5/30

2:55 pm-7:45 am

1 stop32h 50m

$437

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Sun 3/9

4:30 pm-7:15 pm

Nonstop9h 45m

Seattle/Tacoma Intl

Mon 3/24

9:00 pm-1:10 pm

Nonstop9h 10m

$450

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Sun 5/18

10:40 am-4:59 pm

1 stop14h 19m

Seattle/Tacoma Intl

Wed 5/28

8:00 am-10:20 am

1 stop18h 20m

$459

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Sun 3/9

2:05 pm-9:55 pm

1 stop14h 50m

Seattle/Tacoma Intl

Tue 3/18

7:50 pm-7:35 pm

1 stop16h 45m

$462

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Wed 3/12

8:50 am-9:56 pm

2 stops20h 06m

Seattle/Tacoma Intl

Mon 3/24

7:13 am-12:40 pm

2 stops22h 27m

$474

CorkSeattle

ORK - SEA

ORKSEA

Cork

Fri 4/11

6:00 am-4:00 pm

1 stop18h 00m

Seattle/Tacoma Intl

Sat 4/19

5:35 pm-11:30 pm

1 stop21h 55m

$479

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/21

Showing 1-10 of 24 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 January 21, 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 January 21, 2025.
Read reviews from past customers who have flown American Airlines, British Airways and KLM 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
8,521 reviews

Comfort

8.0

Crew

8.6

Overall

8.0

Food

7.3

Entertainment

7.9

Boarding

8.2

Reviews

1 / 10

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

Delta
8.0
Very good
8,521 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Crew

8.6

Overall

8.0

Food

7.3

Entertainment

7.9

Boarding

8.2

Reviews

1 / 10

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

KLM
7.8
Good
1,341 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Crew

8.6

Overall

8.0

Food

7.3

Entertainment

7.9

Boarding

8.2

Reviews

1 / 10

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

Finnair
7.6
Good
1,286 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Crew

8.6

Overall

8.0

Food

7.3

Entertainment

7.9

Boarding

8.2

Reviews

1 / 10

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

United Airlines
7.4
Good
8,985 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Crew

8.6

Overall

8.0

Food

7.3

Entertainment

7.9

Boarding

8.2

Reviews

1 / 10

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

Turkish Airlines
7.3
Good
3,931 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Crew

8.6

Overall

8.0

Food

7.3

Entertainment

7.9

Boarding

8.2

Reviews

1 / 10

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 $408 on Icelandair. Other airlines that offer cheap prices include WestJet from $417 and Aer Lingus from $436 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 (70%), Aer Lingus (70%) and British Airways (70%).

  • What are the cheapest flights from Ireland to Seattle?

    On average you can expect to pay $686 for a flight from Ireland to Seattle. The cheapest flight overall is $575 while the most popular route, (Dublin - Seattle/Tacoma Intl) is currently priced at $355.

  • 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
Federal Way
Ocean Shores
Leavenworth
Olympia
Marysville
Centralia
Cle Elum
Mukilteo
Aberdeen
Lakewood
Issaquah
Shoreline
Lynnwood
Shelton
Silverdale

Browse thousands of different options on Cheapflights for your next trip

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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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Budapest to Seattle flights
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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 January 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest$496Average$844FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$556Average$752FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$640Average$787FlexibilityNo cancel feeOn-time71%
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