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Cheap flights from Dublin to Seattle from £328

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 18/10. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — SEA
18 Oct — 25 Oct1
1 adult
1 adult, Economy

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 Monday

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 18 September 2025.

Round-trip from

£328

Popular in

July

Cheapest in

February

Average price

£496

Good round-trip deal

£444 or less
Scandinavian Airlines
  • Scandinavian Airlines
  • 18/10-24/10
  • 3 total stops
  • 60h 00m total
  • Dublin to Seattle
Search Deals
Highest demand for flights based on searches. 19% potential increase in price (£93 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£13 potential savings vs. average return price).
Search Deals
Average for round-trip flights in September 2025
Search Deals
Price to beat on a round-trip 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 18 September 2025.

Sat 18/1020:05DUB - SEA
2 stops25h 55mScandinavian Airlines
Fri 24/1016:20SEA - DUB
1 stop34h 05mScandinavian Airlines
Deal found 17/9£328
Fri 31/1005:10DUB - SEA
1 stop15h 00mLufthansa
Fri 7/1115:10SEA - DUB
1 stop18h 00mLufthansa
Deal found 16/9£383
Mon 22/1220:40DUB - SEA
1 stop22h 50mBritish Airways
Fri 2/118:50SEA - DUB
1 stop12h 15mBritish Airways
Deal found 16/9£403
Thu 6/1105:00DUB - SEA
1 stop15h 10mLufthansa
Thu 13/1107:00SEA - DUB
1 stop17h 10mLufthansa
Deal found 17/9£404
Mon 22/1220:40DUB - SEA
1 stop22h 50mBritish Airways
Wed 31/1218:50SEA - DUB
1 stop16h 55mBritish Airways
Deal found 17/9£405
Thu 2/1005:55DUB - SEA
1 stop14h 00mLufthansa
Mon 6/1013:12SEA - DUB
1 stop13h 08mLufthansa
Deal found 16/9£406
Sat 15/1105:55DUB - SEA
1 stop13h 50mDelta
Sun 30/1114:05SEA - DUB
1 stop17h 40mDelta
Deal found 16/9£407
Wed 5/1105:55DUB - SEA
1 stop13h 50mMultiple Airlines
Thu 13/1113:40SEA - DUB
1 stop18h 05mMultiple Airlines
Deal found 17/9£407
Wed 5/1105:10DUB - SEA
2 stops21h 42mLufthansa
Fri 14/1107:00SEA - DUB
1 stop17h 10mLufthansa
Deal found 17/9£409

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 18 September 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

Fri 31/10

05:10-13:10

1 stop15h 00m

Seattle/Tacoma Intl

Fri 7/11

15:10-17:10

1 stop18h 00m

£383

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Tue 23/12

20:40-16:55

1 stop28h 15m

Seattle/Tacoma Intl

Fri 2/1

18:50-15:05

1 stop12h 15m

£403

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Wed 24/12

08:50-16:55

1 stop16h 05m

Seattle/Tacoma Intl

Fri 2/1

13:35-12:05

1 stop14h 30m

£403

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Mon 22/12

20:40-11:30

1 stop22h 50m

Seattle/Tacoma Intl

Mon 5/1

18:50-17:05

1 stop14h 15m

£403

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Fri 7/11

05:10-12:10

1 stop15h 00m

Seattle/Tacoma Intl

Thu 13/11

07:00-08:10

1 stop17h 10m

£404

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Thu 6/11

05:00-12:10

1 stop15h 10m

Seattle/Tacoma Intl

Fri 14/11

07:00-08:10

1 stop17h 10m

£404

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Thu 20/11

20:40-11:30

1 stop22h 50m

Seattle/Tacoma Intl

Sun 23/11

11:42-15:05

2 stops19h 23m

£405

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Sat 4/10

05:55-11:55

1 stop14h 00m

Seattle/Tacoma Intl

Thu 16/10

13:12-10:20

1 stop13h 08m

£406

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Thu 2/10

05:55-11:55

1 stop14h 00m

Seattle/Tacoma Intl

Mon 6/10

13:12-10:20

1 stop13h 08m

£406

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Sat 15/11

05:55-11:45

1 stop13h 50m

Seattle/Tacoma Intl

Sun 30/11

14:05-15:45

1 stop17h 40m

£407

Flights are sorted by cheapest return flights first.

Deals found on 17/9

Showing 1-10 of 23 results
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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.

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 12 September 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 18 September 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 12% versus a flight in the afternoon.

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 18 September 2025.
Read through reviews of airlines operating flights from Dublin to Seattle, such as Scandinavian Airlines, American Airlines, andAer Lingus. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Scandinavian Airlines
7.4
Good
1,486 reviews
Check prices

Crew

8.0

Food

6.7

Boarding

7.6

Comfort

7.3

Entertainment

6.6

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Scott,Sept 2025

CPH - LAX

Unfortunately, usual rubbish at the gate for SAS reporting that boarding is underway, but clearly that was not the case. Internet worked to start with, but at some point it wouldn't connect using any of the devices I had with me and remained that way for the rest of the trip; could not even blame being out of network coverage, for all of that, as surely it should work across continental USA - worked for so little of the flight for me that I wouldn't have advertised that such a service was actually available; if I had had to pay extra for internet, I would have been demanding that money back.
Scandinavian Airlines
7.4
Good
1,486 reviews
Scandinavian Airlines
7.4
Good
1,486 reviews
Check prices

Crew

8.0

Food

6.7

Boarding

7.6

Comfort

7.3

Entertainment

6.6

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Scott,Sept 2025

CPH - LAX

Unfortunately, usual rubbish at the gate for SAS reporting that boarding is underway, but clearly that was not the case. Internet worked to start with, but at some point it wouldn't connect using any of the devices I had with me and remained that way for the rest of the trip; could not even blame being out of network coverage, for all of that, as surely it should work across continental USA - worked for so little of the flight for me that I wouldn't have advertised that such a service was actually available; if I had had to pay extra for internet, I would have been demanding that money back.
American Airlines
7.2
Good
10,000 reviews
Scandinavian Airlines
7.4
Good
1,486 reviews
Check prices

Crew

8.0

Food

6.7

Boarding

7.6

Comfort

7.3

Entertainment

6.6

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Scott,Sept 2025

CPH - LAX

Unfortunately, usual rubbish at the gate for SAS reporting that boarding is underway, but clearly that was not the case. Internet worked to start with, but at some point it wouldn't connect using any of the devices I had with me and remained that way for the rest of the trip; could not even blame being out of network coverage, for all of that, as surely it should work across continental USA - worked for so little of the flight for me that I wouldn't have advertised that such a service was actually available; if I had had to pay extra for internet, I would have been demanding that money back.
Aer Lingus
7.2
Good
1,277 reviews
Scandinavian Airlines
7.4
Good
1,486 reviews
Check prices

Crew

8.0

Food

6.7

Boarding

7.6

Comfort

7.3

Entertainment

6.6

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Scott,Sept 2025

CPH - LAX

Unfortunately, usual rubbish at the gate for SAS reporting that boarding is underway, but clearly that was not the case. Internet worked to start with, but at some point it wouldn't connect using any of the devices I had with me and remained that way for the rest of the trip; could not even blame being out of network coverage, for all of that, as surely it should work across continental USA - worked for so little of the flight for me that I wouldn't have advertised that such a service was actually available; if I had had to pay extra for internet, I would have been demanding that money back.
Icelandair
7.0
Good
545 reviews
Scandinavian Airlines
7.4
Good
1,486 reviews
Check prices

Crew

8.0

Food

6.7

Boarding

7.6

Comfort

7.3

Entertainment

6.6

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Scott,Sept 2025

CPH - LAX

Unfortunately, usual rubbish at the gate for SAS reporting that boarding is underway, but clearly that was not the case. Internet worked to start with, but at some point it wouldn't connect using any of the devices I had with me and remained that way for the rest of the trip; could not even blame being out of network coverage, for all of that, as surely it should work across continental USA - worked for so little of the flight for me that I wouldn't have advertised that such a service was actually available; if I had had to pay extra for internet, I would have been demanding that money back.
British Airways
6.7
Okay
7,367 reviews
Scandinavian Airlines
7.4
Good
1,486 reviews
Check prices

Crew

8.0

Food

6.7

Boarding

7.6

Comfort

7.3

Entertainment

6.6

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Scott,Sept 2025

CPH - LAX

Unfortunately, usual rubbish at the gate for SAS reporting that boarding is underway, but clearly that was not the case. Internet worked to start with, but at some point it wouldn't connect using any of the devices I had with me and remained that way for the rest of the trip; could not even blame being out of network coverage, for all of that, as surely it should work across continental USA - worked for so little of the flight for me that I wouldn't have advertised that such a service was actually available; if I had had to pay extra for internet, I would have been demanding that money back.

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 50m for a nonstop flight. There are 2 flights from Dublin to Seattle per day from 5 airlines.

  • How popular is this Dublin to Seattle flight route?

    This flight path from Dublin to Seattle/Tacoma Intl was viewed by 91 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Dublin to Seattle?

    For as low as £383, Lufthansa can have you in Seattle from Dublin in 15h. There are 4523 mi between Dublin and Seattle. Both multi-stop and direct flights can be found to your destination and back.

  • What are the cheapest airlines flying from Dublin to Seattle round-trip?

    According to our current data, Scandinavian Airlines (£315), British Airways (£343), and Aer Lingus (£390) offers the cheapest pricing from Dublin to Seattle. You may be able to fly from Dublin to Seattle for 41% less than the average price by searching for these airlines.

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

    Consider American Airlines (88%), Aer Lingus (88%) or British Airways (88%) 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 £485, our data indicates the cheapest price to be £390. The most popular route (Dublin - Seattle/Tacoma Intl), is priced around £383.

  • 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

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Top 5 airlines flying from Dublin to Seattle

Discover the top 5 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 18 September 2025.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest£315Average£416FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
British AirwaysCheapest£343Average£490FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Aer LingusCheapest£390Average£564FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
IcelandairCheapest£407Average£492FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
American AirlinesCheapest£491Average£657FlexibilityNo 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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