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Cheap flights from Dublin to Seattle from £309

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 27/8. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — SEA
20 Jul — 27 Jul1
1 adult

Cheapflights Tip: The best prices from Dublin to Seattle/Tacoma Intl are usually found in February or January, booked 20 days in advance, depart on a Tuesday or Friday 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 15 July 2025.

Round-trip from

£309

Popular in

July

Cheapest in

February

Average price

£743

Good round-trip deal

£620 or less

Good one-way deal

£542 or less
Scandinavian Airlines
  • Scandinavian Airlines
  • 27/8-3/9
  • 3 total stops
  • 85h 25m total
  • Dublin to Seattle
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Highest demand for flights based on searches. 19% potential increase in price (£96 potential increase over avg. return price).
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Cheapest flight prices on average. 3% potential price decrease (£14 potential savings vs. average return price).
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Average for round-trip flights in July 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 15 July 2025.

Wed 27/820:15DUB - SEA
2 stops49h 35mScandinavian Airlines
Wed 3/916:00SEA - DUB
1 stop35h 50mScandinavian Airlines
Deal found 13/7£309
Tue 28/1011:30DUB - SEA
1 stop13h 30mIcelandair
Mon 1/1214:35SEA - DUB
1 stop11h 40mIcelandair
Deal found 15/7£428
Wed 27/805:55DUB - SEA
3 stops22h 45mMultiple Airlines
Wed 3/919:00SEA - DUB
3 stops31h 25mMultiple Airlines
Deal found 13/7£501
Sat 22/1105:55DUB - SEA
1 stop13h 55mDelta
Sat 29/1113:40SEA - DUB
1 stop18h 00mDelta
Deal found 14/7£505
Thu 28/810:40DUB - SEA
1 stop19h 25mJetBlue
Thu 4/911:30SEA - DUB
1 stop13h 30mJetBlue
Deal found 14/7£549

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 15 July 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

Wed 27/8

20:15-13:50

2 stops49h 35m

Seattle/Tacoma Intl

Wed 3/9

16:00-11:50

1 stop35h 50m

£309

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Tue 28/10

11:30-18:00

1 stop13h 30m

Seattle/Tacoma Intl

Mon 1/12

14:35-10:15

1 stop11h 40m

£428

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Wed 27/8

05:55-20:40

3 stops22h 45m

Seattle/Tacoma Intl

Wed 3/9

19:00-10:25

3 stops31h 25m

£501

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Sat 22/11

05:55-11:50

1 stop13h 55m

Seattle/Tacoma Intl

Sat 29/11

13:40-15:40

1 stop18h 00m

£505

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Thu 28/8

10:40-22:05

1 stop19h 25m

Seattle/Tacoma Intl

Thu 4/9

11:30-09:00

1 stop13h 30m

£549

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Tue 30/9

10:10-12:59

2 stops34h 49m

£344

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Thu 21/8

09:45-16:00

1 stop14h 15m

£536

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Mon 25/8

11:30-19:58

1 stop16h 28m

£556

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Sun 7/12

04:25-21:19

2 stops24h 54m

£652

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Mon 8/12

10:40-23:15

3 stops20h 35m

£893

Flights are sorted by cheapest return flights first.

Deals found on 14/7

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 11 July 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 15 July 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 15 July 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).

How much does it cost for a return flight from Dublin to Seattle?

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 15 July 2025.
Read through reviews of airlines operating flights from Dublin to Seattle, such as Delta, Finnair, andUnited Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
7,956 reviews
Check prices

Boarding

8.2

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Delta
8.0
Very Good
7,956 reviews
Delta
8.0
Very Good
7,956 reviews
Check prices

Boarding

8.2

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Finnair
7.6
Good
1,316 reviews
Delta
8.0
Very Good
7,956 reviews
Check prices

Boarding

8.2

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
United Airlines
7.4
Good
8,861 reviews
Delta
8.0
Very Good
7,956 reviews
Check prices

Boarding

8.2

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
JetBlue
7.3
Good
2,908 reviews
Delta
8.0
Very Good
7,956 reviews
Check prices

Boarding

8.2

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Scandinavian Airlines
7.3
Good
1,423 reviews
Delta
8.0
Very Good
7,956 reviews
Check prices

Boarding

8.2

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.

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 40m for a nonstop flight. There are 2 flights from Dublin to Seattle per day from 4 airlines.

  • How popular is this Dublin to Seattle flight route?

    This flight path from Dublin to Seattle/Tacoma Intl was viewed by 86 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 (£309), Icelandair (£428), and Delta (£505) offers the cheapest pricing from Dublin to Seattle. You may be able to fly from Dublin to Seattle for 43% 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 £344. Finnair flights start at £536 while deals on JetBlue start at £556 one-way.

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

    Consider American Airlines (92%), Aer Lingus (92%) or British Airways (92%) 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 £620, our data indicates the cheapest price to be £504. The most popular route (Dublin - Seattle/Tacoma Intl), is priced around £662.

  • 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 Seattle?

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

Browse thousands of different options on Cheapflights for your next trip

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Top 4 airlines flying from Dublin to Seattle

Discover the top 4 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 15 July 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£348Average£522FlexibilityNo cancel feeOn-time70%
Search British Airways flights
IcelandairCheapest£381Average£496FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Aer LingusCheapest£428Average£587FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
American AirlinesCheapest£498Average£666FlexibilityNo cancel feeOn-time71%
Search American Airlines 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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