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Cheap flights from Dublin to Seattle from £317

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 27/5. 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

Cheapflights Tip: The best prices from Dublin to Seattle/Tacoma Intl are usually found in February or November, booked 20 days in advance, depart on a Wednesday or Tuesday and return on a Tuesday

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 30 April 2025.

Round-trip from

£317

One-way from

£317

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
  • 27/5-13/6
  • 2 total stops
  • 66h 35m total
  • Dublin to Seattle
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WestJet
  • WestJet
  • 11/5
  • 2 total stops
  • 34h 39m total
  • Dublin to Seattle
Search Deals
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 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 30 April 2025.

Tue 27/512:40DUB - SEA
1 stop33h 10mScandinavian Airlines
Fri 13/616:00SEA - DUB
1 stop33h 25mScandinavian Airlines
Deal found 29/4£317
Wed 21/512:15DUB - SEA
1 stop31h 10mIcelandair
Wed 4/623:30SEA - DUB
1 stop27h 35mIcelandair
Deal found 29/4£452
Wed 22/1010:55DUB - SEA
1 stop15h 25mBritish Airways
Thu 30/1015:13SEA - DUB
2 stops16h 32mBritish Airways
Deal found 29/4£507
Fri 9/515:20DUB - SEA
Nonstop9h 39mAer Lingus
Fri 30/519:35SEA - DUB
Nonstop9h 00mAer Lingus
Deal found 29/4£515
Wed 7/507:50DUB - SEA
2 stops20h 50mMultiple Airlines
Tue 20/515:45SEA - DUB
2 stops23h 40mMultiple Airlines
Deal found 29/4£518
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
Sun 8/611:28SEA - 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
Fri 24/1005:55DUB - SEA
2 stops20h 41mLufthansa
Fri 31/1010:00SEA - DUB
2 stops37h 10mLufthansa
Deal found 29/4£614
Wed 7/515:20DUB - SEA
Nonstop9h 39mAmerican Airlines
Tue 20/513:30SEA - DUB
1 stop12h 45mAmerican Airlines
Deal found 30/4£637
Wed 22/1018:40DUB - SEA
2 stops31h 56mSWISS
Wed 29/1016:35SEA - DUB
2 stops18h 15mSWISS
Deal found 29/4£642
Fri 16/512:50DUB - SEA
2 stops57h 19mWestJet
Fri 30/513:15SEA - DUB
2 stops36h 45mWestJet
Deal found 30/4£647

Cheapflights Fare Finder

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 30 April 2025.
Use the filters below to find and compare flights from Dublin to Seattle that are best for you.

Fly from

Dublin

Fly to

Seattle

Route

Depart

Return

Price

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Tue 27/5

12:40-13:50

1 stop33h 10m

Seattle/Tacoma Intl

Fri 13/6

16:00-09:25

1 stop33h 25m

£317

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 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

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

Sat 7/6

11:28-09:00

1 stop13h 32m

£538

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Tue 20/5

16:10-17:50

Nonstop9h 40m

Seattle/Tacoma Intl

Fri 30/5

19:35-12:35

Nonstop9h 00m

£538

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Sat 17/5

19:05-20:42

2 stops57h 37m

Seattle/Tacoma Intl

Thu 5/6

07:23-10:00

1 stop18h 37m

£550

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

Fri 16/5

16:10-17:50

Nonstop9h 40m

Seattle/Tacoma Intl

Thu 29/5

20:20-20:55

1 stop16h 35m

£637

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Wed 22/10

18:40-18:36

2 stops31h 56m

Seattle/Tacoma Intl

Wed 29/10

16:35-17:50

2 stops18h 15m

£642

Flights are sorted by cheapest return flights first.

Deals found on 29/4

Showing 1-10 of 16 results
1
2

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.

Cheapflights Insights

Everything you need to know about your flight from Dublin to Seattle

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 25 April 2025.

Booking 20 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 30 April 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 14% versus a flight in the afternoon.

Weekly flight availability from Dublin to Seattle

Explore weekly flight availability from Dublin 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 DUB to SEA are scheduled on a Monday (3 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (2 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 reviews from past customers who have flown Delta, SWISS and United Airlines 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
7,934 reviews
Check prices

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

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

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

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
SWISS
7.5
Good
1,588 reviews
Delta
8.0
Very Good
7,934 reviews
Check prices

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

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
United Airlines
7.4
Good
8,696 reviews
Delta
8.0
Very Good
7,934 reviews
Check prices

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

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

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

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

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

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 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 are 2 flights 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 75 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, Scandinavian Airlines (£317), Icelandair (£452), and British Airways (£507) offers the cheapest pricing from Dublin to Seattle. You may be able to fly from Dublin to Seattle for 42% 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 £317. JetBlue flights start at £382 while deals on Icelandair start at £430 one-way.

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

    Consider American Airlines (83%), Aer Lingus (83%) or British Airways (83%) 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 £627, our data indicates the cheapest price to be £430. The most popular route (Dublin - Seattle/Tacoma Intl), is priced around £562.

  • 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 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

Fly with Cheapflights

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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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