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Cheap flights from Ireland to Seattle from £316

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/6. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — SEA
5 May — 12 May1
1 adult

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 30 April 2025.

Round-trip from

£316

Popular in

July

Cheapest in

February

Average price

£491

Good round-trip deal

£509 or less

Good one-way deal

£571 or less
Scandinavian Airlines
  • Scandinavian Airlines
  • 5/6-13/6
  • 2 total stops
  • 60h 10m total
  • Ireland to Seattle
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Highest demand for flights based on searches. 21% potential increase in price (£115 potential increase over avg. return price).
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Cheapest flight prices on average. 3% potential price decrease (£16 potential savings vs. average return price).
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Average for round-trip flights in April 2025
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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 30 April 2025.

Thu 5/619:05DUB - SEA
1 stop26h 45mScandinavian Airlines
Fri 13/616:00SEA - DUB
1 stop33h 25mScandinavian Airlines
Deal found 30/4£316
Fri 9/512:15DUB - SEA
1 stop16h 25mIcelandair
Mon 26/519:00SEA - DUB
1 stop32h 05mIcelandair
Deal found 30/4£451
Wed 21/518:15DUB - SEA
2 stops28h 50mMultiple Airlines
Wed 4/617:05SEA - DUB
3 stops30h 20mMultiple Airlines
Deal found 30/4£488
Wed 7/510:55DUB - SEA
1 stop15h 25mBritish Airways
Tue 20/513:30SEA - DUB
1 stop12h 20mBritish Airways
Deal found 30/4£501
Fri 9/515:20DUB - SEA
Nonstop9h 39mAer Lingus
Fri 30/519:35SEA - DUB
Nonstop9h 00mAer Lingus
Deal found 29/4£515
Wed 21/505:55DUB - SEA
1 stop13h 45mDelta
Wed 4/613:30SEA - DUB
1 stop17h 30mDelta
Deal found 29/4£523
Tue 6/511:30DUB - SEA
1 stop17h 24mJetBlue
Thu 5/611:28SEA - DUB
1 stop13h 32mJetBlue
Deal found 29/4£538
Sat 1/1108:00DUB - SEA
2 stops22h 26mUnited Airlines
Sat 15/1107:03SEA - DUB
3 stops19h 02mUnited Airlines
Deal found 29/4£586

Cheapflights Fare Finder

Customise 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 858,174 searches. Data last updated 30 April 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

Thu 5/6

19:05-13:50

1 stop26h 45m

Seattle/Tacoma Intl

Fri 13/6

16:00-09:25

1 stop33h 25m

£316

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Wed 21/5

12:15-11:25

1 stop31h 10m

Seattle/Tacoma Intl

Wed 4/6

23:30-11:05

1 stop27h 35m

£452

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Wed 21/5

18:15-15:05

2 stops28h 50m

Seattle/Tacoma Intl

Wed 4/6

17:05-07:25

3 stops30h 20m

£488

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Wed 22/10

10:55-18:20

1 stop15h 25m

Seattle/Tacoma Intl

Thu 30/10

15:13-14:45

2 stops16h 32m

£507

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Fri 16/5

16:10-17:50

Nonstop9h 40m

Seattle/Tacoma Intl

Thu 29/5

19:35-12:40

Nonstop9h 05m

£516

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Wed 21/5

05:55-11:40

1 stop13h 45m

Seattle/Tacoma Intl

Wed 4/6

13:30-15:00

1 stop17h 30m

£523

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Sat 10/5

11:30-20:54

1 stop17h 24m

Seattle/Tacoma Intl

Tue 10/6

11:28-09:00

1 stop13h 32m

£538

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Fri 24/10

05:55-18:36

2 stops20h 41m

Seattle/Tacoma Intl

Fri 31/10

10:00-06:10

2 stops37h 10m

£614

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Sun 11/5

11:30-14:09

2 stops34h 39m

£317

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Fri 9/5

11:30-20:54

1 stop17h 24m

£382

Flights are sorted by cheapest return flights first.

Deals found on 29/4

Showing 1-10 of 12 results
1
2

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 return 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 £622). Flying from Ireland to Seattle in July is currently the most expensive (average of £946). 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 30 April 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 30 April 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 18.0 - 168.0 inches per month. November is typically the wettest month, when rainfall can reach 168.0 mm. July is typically the driest time to visit Seattle when rainfall is around 18.0 mm.

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 19.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 5.0 C).

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 30 April 2025.
Read through reviews of airlines operating flights from Ireland to Seattle, such as Delta, JetBlue and Scandinavian Airlines. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
7,934 reviews
Check prices

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

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
7,934 reviews
Delta
8.0
Very Good
7,934 reviews
Check prices

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

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
JetBlue
7.3
Good
2,922 reviews
Delta
8.0
Very Good
7,934 reviews
Check prices

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

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
Scandinavian Airlines
7.3
Good
1,349 reviews
Delta
8.0
Very Good
7,934 reviews
Check prices

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

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
WestJet
7.2
Good
2,826 reviews
Delta
8.0
Very Good
7,934 reviews
Check prices

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

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
Icelandair
7.0
Good
487 reviews
Delta
8.0
Very Good
7,934 reviews
Check prices

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

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?

    For a flight from Ireland to Seattle, you will be flying into Seattle/Tacoma Intl. Seattle/Tacoma Intl (SEA) is just 11.4 mi from the center of the city.

  • How popular is this Ireland to Seattle flight route?

    Flights from Ireland to Seattle/Tacoma Intl have been viewed 75 times in the past calendar month.

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

    The cheapest airline one-way is WestJet, with whom users have recently found tickets for as low as £317. However, be on the lookout for offers from JetBlue and Icelandair, as they are both options that can get you from Ireland to Seattle for a low price.

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

    Before booking your flight to Seattle from Ireland, check out the most reliable airlines to get you to your destination on time: American Airlines (83%), Aer Lingus (83%), British Airways( 83%).

  • What are the cheapest flights from Ireland to Seattle?

    The cheapest flight price from Ireland to Seattle is £430. On average you can expect to pay £627. The most popular route, (Dublin - Seattle/Tacoma Intl), can usually be booked for £562.

  • 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 holiday 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 £622). Flying from Ireland to Seattle in July is currently the most expensive (average of £946). 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

Travelling to a place near Ireland?

Book flights to Ireland if you plan to visit one of these locations
Tacoma
Leavenworth
Bothell

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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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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 858,174 searches. Data last updated 30 April 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£349Average£632FlexibilityNo cancel feeOn-time70%
Search British Airways flights
IcelandairCheapest£377Average£495FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Aer LingusCheapest£430Average£609FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights

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How does Cheapflights help users find flights from Ireland to Seattle?

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Why should you use Cheapflights to find cheap flight tickets from Ireland to Seattle?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Ireland to Seattle.

Can Cheapflights find flights from Ireland to Seattle with no change fees?

Yes, we can. To see specific flights from Ireland to Seattle with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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Of course! You can now track prices for flights from Ireland to Seattle and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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