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Cheap flights from Dublin to Seattle from £346

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 1/5. 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

The best prices from Dublin to Seattle/Tacoma Intl are usually found in November or February, booked 62 days in advance, depart on a Wednesday or Friday and return on a Wednesday

Cheap flight deals from Dublin to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Dublin (DUB) 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 21 February 2025.

Round-trip from

£400

One-way from

£346

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
  • Dublin to Seattle
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WestJet
  • WestJet
  • 1/5
  • 2 total stops
  • 53h 25m total
  • Dublin to Seattle
Search Deals
Highest demand for flights based on searches. 21% potential increase in price (£131 potential increase over avg. return price).
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Cheapest flight prices on average. 3% potential price decrease (£18 potential savings vs. average return price).
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Average for round-trip flights in February 2025
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Price to beat on a round-trip flight from Dublin to Seattle/Tacoma Intl.
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Price to beat on a one-way flight from Dublin to Seattle/Tacoma Intl.
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Find flight deals from Dublin to Seattle

Cheapest flights from Dublin to Seattle
Explore the most affordable flight options available from Dublin to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 February 2025.

Wed 7/512:50DUB - SEA
1 stop15h 38mWestJet
Tue 20/507:05SEA - DUB
1 stop19h 45mWestJet
Deal found 19/2£400
Wed 16/411:35DUB - SEA
1 stop18h 25mMultiple Airlines
Tue 22/411:48SEA - DUB
1 stop14h 27mMultiple Airlines
Deal found 19/2£411
Tue 4/1111:30DUB - SEA
1 stop13h 30mIcelandair
Thu 13/1114:35SEA - DUB
1 stop11h 40mIcelandair
Deal found 19/2£494
Thu 8/509:45DUB - SEA
1 stop14h 15mFinnair
Thu 22/517:40SEA - DUB
1 stop15h 35mFinnair
Deal found 20/2£505
Thu 6/305:55DUB - SEA
1 stop13h 42mDelta
Tue 25/307:30SEA - DUB
1 stop17h 55mDelta
Deal found 20/2£505
Sun 9/317:20DUB - SEA
1 stop26h 20mKLM
Mon 24/315:15SEA - DUB
1 stop14h 25mKLM
Deal found 19/2£507
Wed 23/411:30DUB - SEA
1 stop18h 00mJetBlue
Thu 8/511:35SEA - DUB
1 stop12h 45mJetBlue
Deal found 20/2£529
Sun 20/417:25DUB - SEA
1 stop26h 10mBritish Airways
Wed 30/413:35SEA - DUB
2 stops19h 55mBritish Airways
Deal found 20/2£539
Sat 17/515:20DUB - SEA
Nonstop9h 39mAer Lingus
Sat 31/518:45SEA - DUB
Nonstop9h 00mAer Lingus
Deal found 20/2£551
Wed 5/309:00DUB - SEA
3 stops38h 54mUnited Airlines
Wed 12/305:15SEA - DUB
2 stops21h 50mUnited Airlines
Deal found 19/2£581
Mon 7/415:20DUB - SEA
Nonstop9h 39mAmerican Airlines
Fri 18/420:20SEA - DUB
1 stop12h 15mAmerican Airlines
Deal found 20/2£624
Fri 7/305:00DUB - SEA
1 stop15h 10mLufthansa
Fri 14/315:00SEA - DUB
1 stop24h 50mLufthansa
Deal found 19/2£631

Find flights from Dublin to Seattle within your budget

Customise your flight search to find flights from Dublin 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 February 2025.

Fly from

Dublin

Fly to

Seattle

Route

Depart

Return

Price

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Wed 7/5

12:50-20:28

1 stop15h 38m

Seattle/Tacoma Intl

Tue 20/5

07:05-10:50

1 stop19h 45m

£400

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Wed 16/4

11:35-22:00

1 stop18h 25m

Seattle/Tacoma Intl

Tue 22/4

11:48-10:15

1 stop14h 27m

£411

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Mon 7/4

12:15-17:50

1 stop13h 35m

Seattle/Tacoma Intl

Fri 18/4

19:00-11:05

1 stop32h 05m

£494

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Thu 8/5

09:45-16:00

1 stop14h 15m

Seattle/Tacoma Intl

Thu 22/5

17:40-17:15

1 stop15h 35m

£505

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Thu 6/3

05:55-11:37

1 stop13h 42m

Seattle/Tacoma Intl

Tue 25/3

07:30-08:25

1 stop17h 55m

£505

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Sun 9/3

13:25-12:40

1 stop30h 15m

Seattle/Tacoma Intl

Sun 23/3

15:15-16:40

1 stop18h 25m

£507

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Wed 23/4

11:30-21:30

1 stop18h 00m

Seattle/Tacoma Intl

Tue 6/5

11:35-08:20

1 stop12h 45m

£529

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Sun 20/4

17:25-11:35

1 stop26h 10m

Seattle/Tacoma Intl

Wed 30/4

13:35-17:30

2 stops19h 55m

£539

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Sat 17/5

15:20-16:59

Nonstop9h 39m

Seattle/Tacoma Intl

Sat 31/5

18:45-11:45

Nonstop9h 00m

£551

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Wed 5/3

09:00-15:54

3 stops38h 54m

Seattle/Tacoma Intl

Wed 12/3

05:15-10:05

2 stops21h 50m

£581

Flights are sorted by cheapest return flights first.

Deals found on 19/2

Showing 1-10 of 18 results
1
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Best time to book a flight from Dublin to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Dublin 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 Dublin to Seattle

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

How far ahead should I book a flight from Dublin to Seattle?

Use this chart to determine the optimal time to book a return flight from Dublin to Seattle. Price data was last updated on 14 February 2025.

Booking 62 days in advance of your planned departure date is, on average, the best time to get cheap flights from Dublin to Seattle. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, January is the cheapest month in which you can book a flight from Dublin to Seattle (average of £622). Flying from Dublin 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 DUB to SEA?

Find hourly flight availability from Dublin 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 February 2025.

When flying from Dublin to Seattle, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 18% versus a flight in the afternoon.

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 February 2025.
Read reviews from past customers who have flown Delta, KLM and Finnair from Dublin to Seattle. 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
8,217 reviews
Check prices

Food

7.3

Crew

8.5

Overall

8.0

Entertainment

7.9

Comfort

8.0

Boarding

8.2

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
8,217 reviews
Delta
8.0
Very Good
8,217 reviews
Check prices

Food

7.3

Crew

8.5

Overall

8.0

Entertainment

7.9

Comfort

8.0

Boarding

8.2

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
1,333 reviews
Delta
8.0
Very Good
8,217 reviews
Check prices

Food

7.3

Crew

8.5

Overall

8.0

Entertainment

7.9

Comfort

8.0

Boarding

8.2

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
8,217 reviews
Check prices

Food

7.3

Crew

8.5

Overall

8.0

Entertainment

7.9

Comfort

8.0

Boarding

8.2

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
7.4
Good
3,069 reviews
Delta
8.0
Very Good
8,217 reviews
Check prices

Food

7.3

Crew

8.5

Overall

8.0

Entertainment

7.9

Comfort

8.0

Boarding

8.2

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
8,761 reviews
Delta
8.0
Very Good
8,217 reviews
Check prices

Food

7.3

Crew

8.5

Overall

8.0

Entertainment

7.9

Comfort

8.0

Boarding

8.2

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 Dublin to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airports do I use to fly from Dublin to Seattle?

    If you book a flight from Dublin to Seattle, you will be flying from Dublin to Seattle/Tacoma Intl. Flights to Seattle/Tacoma Intl (SEA) from Dublin (DUB) take 9h 39m for a nonstop flight. There is 1 flight from Dublin to Seattle per day from 3 airlines.

  • How popular is this Dublin to Seattle flight route?

    This flight path from Dublin to Seattle/Tacoma Intl was viewed by 67 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 flying from Dublin to Seattle round-trip?

    According to our current data, WestJet (£400), Icelandair (£494), and Finnair (£505) offers the cheapest pricing from Dublin to Seattle. You may be able to fly from Dublin to Seattle for 32% less than the average price by searching for these airlines.

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

    To fly one-way, consider booking your trip with WestJet, which is currently one of the cheapest options available, starting at £346. Icelandair flights start at £381 while deals on Aer Lingus start at £437 one-way.

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

    Consider American Airlines (40%), Aer Lingus (40%) or British Airways (40%) when booking your flight. These represent the most reliable airlines when flying from Dublin to Seattle.

  • What are the cheapest flights from Dublin to Seattle?

    Looking for the cheapest flight from Dublin to Seattle? While on average our users pay £1,020, our data indicates the cheapest price to be £387. The most popular route (Dublin - Seattle/Tacoma Intl), is priced around £475.

  • Can I find deals for flights from Dublin to Seattle that include hotel bookings?

    Yes. In addition to deals on Dublin to Seattle flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Dublin to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dublin to Seattle.

  • Can I find deals for business class flights from Dublin to Seattle?

    Yes. Cheapflights offers flight deals from Dublin 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 Dublin to Seattle?

    Currently, January is the cheapest month in which you can book a flight from Dublin to Seattle (average of £622). Flying from Dublin 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 Dublin?

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

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Top 3 airlines flying from Dublin to Seattle

Discover the top 3 airlines that operate flights from Dublin 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 February 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

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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

Deals for Dublin to Seattle flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

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

Cheapflights simply makes it quick and affordable to book flights from Dublin to Seattle by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

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

Yes! Cheapflights helps users easily find flights from Dublin to Seattle with no change fees.

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

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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