Seattle

$352+ 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
May 6 — May 131
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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 May 1, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$419
(ResecentrumGruppen)

One-way from

$382
(oojo)

Popular in

July

Cheapest in

February

Average price

$683

Good round-trip deal

$874 or less

Good one-way deal

$595 or less
Provider with most accurate pricing for Dublin-Seattle/Tacoma Intl flight deals.
Provider most trusted by Cheapflights users for Dublin-Seattle/Tacoma Intl flights.
From Ireland to Seattle/Tacoma Intl
One-way flight from Ireland to Seattle/Tacoma Intl
Highest demand for flights based on searches. 21% potential increase in price ($207 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($27 potential savings vs. average RT price).
Average for round-trip flights in May 2025
Price to beat on a round-trip flight from Ireland to Seattle/Tacoma Intl.
Price to beat on a one-way flight from Ireland to Seattle/Tacoma Intl.

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 May 1, 2025.

This ResecentrumGruppen deal was found by Cheapflights users on 4/29. 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 ResecentrumGruppen is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/57:05 pmDUB - SEA
1 stop26h 45mScandinavian Airlines
Fri 6/134:00 pmSEA - DUB
1 stop33h 25mScandinavian Airlines
Deal found 4/29$419
This Gotogate deal was found by Cheapflights users on 4/29. 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.
Sun 5/1112:15 pmDUB - SEA
1 stop16h 25mIcelandair
Mon 5/267:00 pmSEA - DUB
1 stop32h 05mIcelandair
Deal found 4/29$602
This Mytrip deal was found by Cheapflights users on 4/30. 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 5/216:15 pmDUB - SEA
2 stops28h 50mMultiple Airlines
Wed 6/45:05 pmSEA - DUB
2 stops24h 05mMultiple Airlines
Deal found 4/30$616
This TravelUp deal was found by Cheapflights users on 4/30. 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.
Wed 5/710:55 amDUB - SEA
1 stop15h 25mBritish Airways
Tue 5/201:30 pmSEA - DUB
1 stop14h 25mBritish Airways
Deal found 4/30$671
This American Airlines deal was found by Cheapflights users on 4/30. 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 10/2210:50 amDUB - SEA
1 stop15h 30mAmerican Airlines
Thu 10/307:50 pmSEA - DUB
1 stop17h 00mAmerican Airlines
Deal found 4/30$678
This Gotogate deal was found by Cheapflights users on 4/29. 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 5/93:20 pmDUB - SEA
Nonstop9h 39mAer Lingus
Fri 5/307:35 pmSEA - DUB
Nonstop9h 00mAer Lingus
Deal found 4/29$690
This Delta deal was found by Cheapflights users on 4/29. 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 5/215:55 amDUB - SEA
1 stop13h 45mDelta
Wed 6/41:30 pmSEA - DUB
1 stop17h 30mDelta
Deal found 4/29$701
This Air France deal was found by Cheapflights users on 4/29. 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.
Thu 5/86:00 amORK - SEA
1 stop17h 57mMultiple Airlines
Tue 5/131:30 pmSEA - ORK
1 stop17h 10mMultiple Airlines
Deal found 4/29$703
This JetBlue deal was found by Cheapflights users on 4/29. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/611:30 amDUB - SEA
1 stop17h 24mJetBlue
Thu 6/511:28 amSEA - DUB
1 stop13h 32mJetBlue
Deal found 4/29$721
This Mytrip deal was found by Cheapflights users on 4/30. 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 5/84:55 pmSNN - SEA
2 stops32h 55mMultiple Airlines
Mon 5/123:45 pmSEA - SNN
2 stops20h 50mMultiple Airlines
Deal found 4/30$752
This KLM deal was found by Cheapflights users on 4/29. 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.
Thu 6/125:10 pmORK - SEA
1 stop30h 45mKLM
Thu 9/181:30 pmSEA - ORK
1 stop17h 10mKLM
Deal found 4/29$816
This Cheapflightsfares deal was found by Cheapflights users on 4/30. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/128:30 pmORK - SEA
2 stops29h 20mAer Lingus
Thu 9/187:35 pmSEA - ORK
2 stops20h 10mAer Lingus
Deal found 4/30$818

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 May 1, 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

Fri 6/6

7:05 pm-1:50 pm

1 stop26h 45m

Seattle/Tacoma Intl

Fri 6/13

4:00 pm-9:25 am

1 stop33h 25m

$422

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Fri 5/16

12:15 pm-8:40 pm

1 stop16h 25m

Seattle/Tacoma Intl

Thu 5/29

11:30 pm-1:15 pm

1 stop29h 45m

$604

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Wed 5/14

3:45 pm-3:05 pm

2 stops31h 20m

Seattle/Tacoma Intl

Wed 5/21

5:05 pm-9:10 am

3 stops32h 05m

$607

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Wed 10/22

10:50 am-6:20 pm

1 stop15h 30m

Seattle/Tacoma Intl

Thu 10/30

7:50 pm-7:50 pm

1 stop17h 00m

$678

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Fri 5/16

4:10 pm-5:50 pm

Nonstop9h 40m

Seattle/Tacoma Intl

Thu 5/29

7:35 pm-12:40 pm

Nonstop9h 05m

$691

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Tue 5/27

8:20 pm-11:35 am

1 stop23h 15m

Seattle/Tacoma Intl

Tue 6/3

8:20 pm-7:30 pm

1 stop15h 10m

$698

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Wed 5/21

5:55 am-11:40 am

1 stop13h 45m

Seattle/Tacoma Intl

Wed 6/4

1:30 pm-3:00 pm

1 stop17h 30m

$702

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Wed 5/28

11:30 am-8:54 pm

1 stop17h 24m

Seattle/Tacoma Intl

Wed 6/11

11:28 am-9:00 am

1 stop13h 32m

$722

CorkSeattle

ORK - SEA

ORKSEA

Cork

Thu 6/12

5:10 pm-3:55 pm

1 stop30h 45m

Seattle/Tacoma Intl

Thu 9/18

1:30 pm-2:40 pm

1 stop17h 10m

$816

CorkSeattle

ORK - SEA

ORKSEA

Cork

Thu 6/12

8:30 pm-5:50 pm

2 stops29h 20m

Seattle/Tacoma Intl

Thu 9/18

7:35 pm-11:45 pm

2 stops20h 10m

$818

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Showing 1-10 of 30 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, 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 $405). 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 May 1, 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.

Weekly flight availability from Ireland to Seattle

Explore weekly flight availability from Ireland to Seattle. 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 May 1, 2025.

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

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 May 1, 2025.
Read reviews from past customers who have flown Delta, KLM and Air France from Ireland to Seattle. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
8.0
Very good

Comfort

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

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
8.0
Very good
8.0
Very good

Comfort

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

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
8.0
Very good

Comfort

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

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
8.0
Very good

Comfort

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

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
8.0
Very good

Comfort

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

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
8.0
Very good

Comfort

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

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?

  • 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 $382 on Icelandair. Other airlines that offer cheap prices include WestJet from $387 and Scandinavian Airlines from $470 one-way.

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

  • 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 (83%), Aer Lingus (83%) and British Airways (83%).

  • What are the cheapest flights from Ireland to Seattle?

    On average you can expect to pay $813 for a flight from Ireland to Seattle. The cheapest flight overall is $557 while the most popular route, (Dublin - Seattle/Tacoma Intl) is currently priced at $425.

  • 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 $405). 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
Tacoma
Lakewood
Renton
Ocean Shores
Lacey
Leavenworth
Federal Way
Olympia
Shoreline
Cle Elum
Centralia
Kent
Lynnwood
Aberdeen
Shelton
Silverdale
Redmond
Issaquah

Browse thousands of different options on Cheapflights for your next trip

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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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$556Average$807FlexibilityNo cancel feeOn-time76%
Aer LingusCheapest$611Average$878FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$684Average$832FlexibilityNo cancel feeOn-time71%

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