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Cheap flights from Ireland to Seattle from £327

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 24/5. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — SEA
26 feb — 5 mar1
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 21 febbraio 2025.

Round-trip from

£401

One-way from

£327

Popular in

July

Cheapest in

November

Average price

£489

Good round-trip deal

£461 or less

Good one-way deal

£435 or less
WestJet
  • WestJet
  • 7/5-20/5
  • 2 total stops
  • 35h 23m total
  • Ireland to Seattle
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WestJet
  • WestJet
  • 24/5
  • 2 total stops
  • 34h 46m total
  • Ireland to Seattle
Search Deals
Highest demand for flights based on searches. 21% potential increase in price (£131 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£18 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 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 21 febbraio 2025.

mer 7/512:50DUB - SEA
1 stop15h 38mWestJet
mar 20/507:05SEA - DUB
1 stop19h 45mWestJet
Deal found 20/2£401
mer 7/512:50DUB - SEA
1 stop15h 38mMultiple Airlines
mar 20/515:45SEA - DUB
2 stops15h 05mMultiple Airlines
Deal found 20/2£474
lun 7/412:15DUB - SEA
1 stop13h 35mIcelandair
ven 18/419:00SEA - DUB
1 stop32h 05mIcelandair
Deal found 20/2£494
gio 8/509:45DUB - SEA
1 stop14h 15mFinnair
gio 22/517:40SEA - DUB
1 stop15h 35mFinnair
Deal found 21/2£495
gio 6/305:55DUB - SEA
1 stop13h 42mDelta
mar 25/307:30SEA - DUB
1 stop17h 55mDelta
Deal found 20/2£505
mer 23/411:30DUB - SEA
1 stop18h 00mJetBlue
ven 2/511:35SEA - DUB
1 stop12h 45mJetBlue
Deal found 20/2£529
dom 20/417:25DUB - SEA
1 stop26h 10mBritish Airways
mer 30/413:35SEA - DUB
2 stops19h 55mBritish Airways
Deal found 20/2£539
sab 17/515:20DUB - SEA
Nonstop9h 39mAer Lingus
lun 26/518:45SEA - DUB
Nonstop9h 00mAer Lingus
Deal found 21/2£551
mer 5/309:00DUB - SEA
3 stops38h 54mUnited Airlines
mer 12/305:15SEA - DUB
2 stops21h 50mUnited Airlines
Deal found 19/2£581
lun 7/415:20DUB - SEA
Nonstop9h 39mAmerican Airlines
ven 18/420:20SEA - DUB
1 stop12h 15mAmerican Airlines
Deal found 20/2£624
ven 7/305:00DUB - SEA
1 stop15h 10mLufthansa
ven 14/315:00SEA - DUB
1 stop24h 50mLufthansa
Deal found 19/2£631
lun 30/606:00DUB - SEA
1 stop13h 15mAir France
gio 10/713:30SEA - DUB
1 stop17h 30mAir France
Deal found 21/2£670

Find flights from Ireland to Seattle within your budget

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 21 febbraio 2025.

Fly from

Ireland

Fly to

Seattle

Route

Depart

Return

Price

DublinSeattle

DUB - SEA

DUBSEA

Dublin

mer 7/5

12:50-20:28

1 stop15h 38m

Seattle/Tacoma Intl

mar 20/5

07:05-10:50

1 stop19h 45m

£401

DublinSeattle

DUB - SEA

DUBSEA

Dublin

mer 7/5

12:50-20:28

1 stop15h 38m

Seattle/Tacoma Intl

mar 20/5

15:45-14:50

2 stops15h 05m

£474

DublinSeattle

DUB - SEA

DUBSEA

Dublin

lun 7/4

12:15-17:50

1 stop13h 35m

Seattle/Tacoma Intl

ven 18/4

19:00-11:05

1 stop32h 05m

£494

DublinSeattle

DUB - SEA

DUBSEA

Dublin

gio 8/5

09:45-16:00

1 stop14h 15m

Seattle/Tacoma Intl

gio 22/5

17:40-17:15

1 stop15h 35m

£495

DublinSeattle

DUB - SEA

DUBSEA

Dublin

gio 6/3

05:55-11:37

1 stop13h 42m

Seattle/Tacoma Intl

mar 25/3

07:30-08:25

1 stop17h 55m

£505

DublinSeattle

DUB - SEA

DUBSEA

Dublin

mer 23/4

11:30-21:30

1 stop18h 00m

Seattle/Tacoma Intl

ven 2/5

11:35-08:20

1 stop12h 45m

£529

DublinSeattle

DUB - SEA

DUBSEA

Dublin

dom 20/4

17:25-11:35

1 stop26h 10m

Seattle/Tacoma Intl

mer 30/4

13:35-17:30

2 stops19h 55m

£539

DublinSeattle

DUB - SEA

DUBSEA

Dublin

sab 17/5

15:20-16:59

Nonstop9h 39m

Seattle/Tacoma Intl

lun 26/5

18:45-11:45

Nonstop9h 00m

£551

DublinSeattle

DUB - SEA

DUBSEA

Dublin

mer 5/3

09:00-15:54

3 stops38h 54m

Seattle/Tacoma Intl

mer 12/3

05:15-10:05

2 stops21h 50m

£581

DublinSeattle

DUB - SEA

DUBSEA

Dublin

lun 7/4

15:20-16:59

Nonstop9h 39m

Seattle/Tacoma Intl

ven 18/4

20:20-16:35

1 stop12h 15m

£624

Flights are sorted by cheapest return flights first.

Deals found on 20/2

Showing 1-10 of 20 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.

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 £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 21 febbraio 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 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 21 febbraio 2025.
Read through reviews of airlines operating flights from Ireland to Seattle, such as Delta, KLM and Finnair. 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
8,213 reviews
Check prices

Entertainment

7.9

Overall

8.0

Food

7.3

Crew

8.5

Boarding

8.2

Comfort

8.0

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
8,213 reviews
Delta
8.0
Very Good
8,213 reviews
Check prices

Entertainment

7.9

Overall

8.0

Food

7.3

Crew

8.5

Boarding

8.2

Comfort

8.0

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
1,331 reviews
Delta
8.0
Very Good
8,213 reviews
Check prices

Entertainment

7.9

Overall

8.0

Food

7.3

Crew

8.5

Boarding

8.2

Comfort

8.0

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
1,273 reviews
Delta
8.0
Very Good
8,213 reviews
Check prices

Entertainment

7.9

Overall

8.0

Food

7.3

Crew

8.5

Boarding

8.2

Comfort

8.0

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

Air France
7.4
Good
1,449 reviews
Delta
8.0
Very Good
8,213 reviews
Check prices

Entertainment

7.9

Overall

8.0

Food

7.3

Crew

8.5

Boarding

8.2

Comfort

8.0

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
8,759 reviews
Delta
8.0
Very Good
8,213 reviews
Check prices

Entertainment

7.9

Overall

8.0

Food

7.3

Crew

8.5

Boarding

8.2

Comfort

8.0

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 67 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 £327. However, be on the lookout for offers from Icelandair and Aer Lingus, 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 (40%), Aer Lingus (40%), British Airways( 40%).

  • What are the cheapest flights from Ireland to Seattle?

    The cheapest flight price from Ireland to Seattle is £387. On average you can expect to pay £1,020. The most popular route, (Dublin - Seattle/Tacoma Intl), can usually be booked for £474.

  • 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 21 febbraio 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£367Average£520FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
British AirwaysCheapest£371Average£646FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Aer LingusCheapest£390Average£659FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights

Fly with Cheapflights

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

Cheapflights helps you search for flights from Ireland to Seattle via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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.

Can Cheapflights notify me if prices for flights from Ireland to Seattle become cheaper?

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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