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 16/9. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — SEA
29 Sep — 6 Oct1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Dublin to Seattle/Tacoma Intl are usually found in April or May, booked 58 days in advance, depart on a Wednesday or Friday and return on a Tuesday
Cheap flight deals from Dublin to Seattle
Enter your travel dates to find the best prices.
Cheapest
Best
Direct
Last-minute
One-way
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 August 2026.
Sat 26/1211:00 -
1 stop13h 50m
Sat 9/118:45 -
1 stop12h 20m
Deal found 27/8£451
Tue 6/1009:45 -
2 stops18h 55m
Sun 18/1019:00 -
2 stops19h 55m
Deal found 30/8£451
Thu 1/1019:05 -
1 stop26h 40m
Sat 10/1015:55 -
2 stops18h 30m
Deal found 27/8£452
Thu 1/1019:05 -
1 stop26h 40m
Sun 4/1015:55 -
1 stop18h 25m
Deal found 26/8£458
Sat 5/1208:50 -
1 stop16h 00m
Sun 6/1218:45 -
1 stop29h 05m
Deal found 29/8£472
Tue 6/1014:15 -
1 stop14h 25m
Sun 18/1015:40 -
1 stop13h 35m
Deal found 30/8£485
Fri 30/1012:55 -
1 stop16h 02m
Thu 12/1113:40 -
1 stop17h 15m
Deal found 29/8£489
Fri 13/1118:05 -
2 stops30h 45m
Sat 21/1107:30 -
1 stop15h 40m
Deal found 27/8£490
Best flights from Dublin to Seattle
Discover carefully curated flight deals from Dublin to Seattle that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 30 August 2026.
Sat 26/920:00 -
2 stops25h 45m
Sun 4/1015:55 -
1 stop18h 25m
Deal found 30/8£504
Sat 19/905:55 -
1 stop13h 52m
Tue 29/918:45 -
1 stop15h 40m
Deal found 25/8£521
Sat 26/905:55 -
1 stop13h 52m
Sun 4/1006:00 -
1 stop20h 00m
Deal found 26/8£522
Sat 10/1005:55 -
1 stop13h 57m
Fri 23/1007:22 -
1 stop17h 23m
Deal found 26/8£522
Sat 10/1005:55 -
1 stop13h 57m
Sat 17/1010:37 -
2 stops18h 03m
Deal found 26/8£524
Direct flights from Dublin to Seattle
Explore direct flight options from Dublin to Seattle based on user searches, and compare prices and availability for your desired travel dates. Data last updated 30 August 2026.
Mon 12/1015:25 -
Nonstop9h 45m
Mon 19/1019:10 -
Nonstop9h 05m
Deal found 28/8£525
Fri 11/915:25 -
Nonstop9h 45m
Mon 14/919:10 -
Nonstop9h 05m
Deal found 28/8£640
Sat 26/915:25 -
Nonstop9h 45m
Sun 4/1019:10 -
Nonstop9h 05m
Deal found 30/8£653
Wed 14/1015:25 -
Nonstop9h 45m
Wed 21/1019:10 -
Nonstop9h 10m
Deal found 30/8£674
Tue 6/1015:25 -
Nonstop9h 45m
Sun 18/1019:10 -
Nonstop9h 05m
Deal found 30/8£756
Thu 1/1015:25 -
Nonstop9h 45m
Sat 10/1019:10 -
Nonstop9h 05m
Deal found 27/8£779
Tue 22/915:25 -
Nonstop9h 45m
Sat 17/1019:10 -
Nonstop9h 05m
Deal found 27/8£866
Sat 10/1015:25 -
Nonstop9h 45m
Fri 23/1019:10 -
Nonstop9h 05m
Deal found 30/8£1,018
Last-minute flights from Dublin to Seattle
Discover last-minute flight deals from Dublin to Seattle. Data last updated 30 August 2026 and is based on user searches.
Thu 3/909:30 -
1 stop22h 05m
Thu 10/907:51 -
1 stop17h 54m
Deal found 27/8£502
Thu 3/915:25 -
Nonstop9h 45m
Thu 10/919:10 -
Nonstop9h 05m
Deal found 27/8£516
Sat 5/909:30 -
1 stop22h 43m
Sun 20/907:51 -
1 stop17h 54m
Deal found 29/8£519
Fri 25/919:50 -
2 stops25h 55m
Fri 2/1015:55 -
2 stops33h 20m
Deal found 28/8£511
Sat 26/920:00 -
2 stops25h 45m
Sun 4/1015:55 -
1 stop18h 25m
Deal found 30/8£504
One-way flights from Dublin to Seattle
Search for one-way flight options from Dublin to Seattle. Find affordable one-way fares based on user searches. Data last updated 30 August 2026.
Wed 16/909:40 -
2 stops32h 00m
Deal found 30/8£428
Wed 16/909:35 -
1 stop17h 25m
Deal found 30/8£443
Fri 27/1118:30 -
1 stop24h 55m
Deal found 28/8£465
Sun 13/920:30 -
1 stop29h 55m
Deal found 26/8£852
Wed 16/915:25 -
Nonstop9h 45m
Deal found 30/8£889
Tue 6/1009:50 -
3 stops37h 03m
Deal found 30/8£1,101
Sat 24/1008:50 -
3 stops22h 36m
Deal found 29/8£1,103
Fri 4/909:20 -
3 stops37h 32m
Deal found 28/8£1,104
Mon 26/1010:40 -
3 stops34h 59m
Deal found 30/8£1,117
Find 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 August 2026.
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 7,457,451 searches. Data last updated 30 August 2026.
Use the filters below to find and compare flights from Dublin to Seattle that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
Cheapest return flight
DublinSeattle
DUB Dublin - SEA Seattle/Tacoma Intl
DUBSEA
Dublin
Sat 26/9
20:00-13:45
2 stops25h 45m
Seattle/Tacoma Intl
Sun 4/10
15:55-18:20
1 stop18h 25m
£504
Fastest return journey
DublinSeattle
DUB Dublin - SEA Seattle/Tacoma Intl
DUBSEA
Dublin
Sat 19/9
05:55-11:47
1 stop13h 52m
Seattle/Tacoma Intl
Tue 29/9
18:45-18:25
1 stop15h 40m
£521
DublinSeattle
DUB Dublin - SEA Seattle/Tacoma Intl
DUBSEA
Dublin
Sat 26/9
05:55-11:47
1 stop13h 52m
Seattle/Tacoma Intl
Sun 4/10
06:00-10:00
1 stop20h 00m
£522
DublinSeattle
DUB Dublin - SEA Seattle/Tacoma Intl
DUBSEA
Dublin
Sat 10/10
05:55-11:52
1 stop13h 57m
Seattle/Tacoma Intl
Fri 23/10
07:22-08:45
1 stop17h 23m
£522
DublinSeattle
DUB Dublin - SEA Seattle/Tacoma Intl
DUBSEA
Dublin
Sat 10/10
05:55-11:52
1 stop13h 57m
Seattle/Tacoma Intl
Sat 17/10
10:37-12:40
2 stops18h 03m
£524
Cheapest one-way
DublinSeattle
DUB Dublin - SEA Seattle/Tacoma Intl
DUBSEA
Dublin
Fri 27/11
18:30-11:25
1 stop24h 55m
£465
DublinSeattle
DUB Dublin - SEA Seattle/Tacoma Intl
DUBSEA
Dublin
Sun 13/9
20:30-18:25
1 stop29h 55m
£852
DublinSeattle
DUB Dublin - SEA Seattle/Tacoma Intl
DUBSEA
Dublin
Mon 14/9
08:30-11:35
1 stop35h 05m
£852
DublinSeattle
DUB Dublin - SEA Seattle/Tacoma Intl
DUBSEA
Dublin
Fri 2/10
09:20-14:49
3 stops37h 29m
£1,104
DublinSeattle
DUB Dublin - SEA Seattle/Tacoma Intl
DUBSEA
Dublin
Fri 4/9
09:20-14:52
3 stops37h 32m
£1,104
Flights are sorted by cheapest return flights first.
Deals found on 28/8
Showing 1-10 of 15 resultsSorted by cheapest first
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.
DUB-SEA
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
Prices
Delays
More
How far ahead should I book a flight from Dublin to Seattle?
Booking 57 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, April is the cheapest month in which you can book a flight from Dublin to Seattle (average of £445). Flying from Dublin to Seattle in July is currently the most expensive (average of £769). 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 August 2026.
When flying from Dublin 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.
How much does it cost for a return flight from Dublin to Seattle?
Airfare is below average for this route at the moment.
Dublin to Seattle flights typically cost between £485 and £702 in January.The cheapest return price found within the last 5 days was £430 on Icelandair (14 Jan–18 Jan).
How often are flights from Dublin to Seattle delayed?
About 11% of weekly flights between Dublin and Seattle have experienced delays in the past year, with the average delay time being 166 minutes.
What is the most punctual flight time for Dublin to Seattle flights?
Historically, flights departing in the early afternoon are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Tuesday tends to have the lowest number of delays on this route, whereas Saturday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on Dublin to Seattle flights?
Over the past year, Aer Lingus have had the lowest number of delays on this route, with just 11% of flights being delayed.
What’s the top stopover airport for flights from Dublin to Seattle?
Share of one-stop return flights from Dublin to Seattle chosen by Cheapflights users in the past 12 months, using the same stopover each way.
London (LHR) – chosen by Cheapflights users on 64% of one-stop itineraries from Dublin to Seattle on Cheapflights.
What’s the cheapest stopover airport for flights from Dublin to Seattle?
Average return fare for one-stop flights from Dublin to Seattle, chosen by Cheapflights users in the past 12 months, with the same stopover each way.
Reykjavik (KEF) is the most affordable one-stop option, with an average return flight price of £516.
What’s the fastest stopover option from Dublin to Seattle?
Shortest average travel time for one-stop one-way flights from Dublin to Seattle, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.
Flights via Reykjavik (KEF) have the shortest average one-way travel time for one-stop routes: 12h 17m.
Which airport typically offers the quickest stopover for flights from Dublin to Seattle?
Average stopover duration for one-stop one-way flights from Dublin to Seattle, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Reykjavik (KEF) offer the fastest connection on this route, with an average stopover time of 1h 49m.
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 August 2026.
Read through reviews of airlines operating flights from Dublin to Seattle, such as Aer Lingus,Icelandair, andBritish Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Underpricer is a terrible organization that inserted itself as a “travel agent” simply by way of me booking on kayak. Never would I have willing assented to using underpricer. Further, we had a problem whereby two duplicate one-way flights from Dublin were inadvertently booked for me and my wife, stemming from a family emergency. My wife’s sister / my sister in law had a brain tumor and immediate surgery to remove it, which obviously impacted our previously planned travel arrangements. I tried to cancel the flight due to the extenuating circumstances. Underpricer said canceling was not possible, but a credit would be possible for the exact same flight - one way from Dublin - to be used in one year from the original flight date. I asked if it would be possible to make the credit a general credit to any participating AerLingus airport destination, which would allow more flexibility than having to go back to Ireland within a year. In order to pursue the credit, Underpricer requested documentary proof regarding my sister in laws brain tumor, which we gave them. Underpricer then asked us to document our relationship to the patient - so I gave them my marriage certificate to evidence my wife and her sister having the same last name. Underpricer asked for further proof, so we gave them copies of my passport, my wife’s passport, and my sister in laws passport. All of these hoops to jump through for Underpricer, with sporadic communication on their part throughout, only for them to say 3 days before the original booking that no credit was available - not even the one they originally offered. They said my only option was to pick a date within the next year to move the flight to - and of course to make that change, they charged me an additional $350 fee just to make that change. What a pathetic, fraudulent organization. Kayak should be embarrassed to be associated with Underpricer and should cease that relationship immediately. And for AerLingus, who only Underpricer could talk to regarding the booking (I was not permitted) to not understand our family’s situation and just stand by blanket policy that no credit is permitted, is equally disappointing.
Underpricer is a terrible organization that inserted itself as a “travel agent” simply by way of me booking on kayak. Never would I have willing assented to using underpricer. Further, we had a problem whereby two duplicate one-way flights from Dublin were inadvertently booked for me and my wife, stemming from a family emergency. My wife’s sister / my sister in law had a brain tumor and immediate surgery to remove it, which obviously impacted our previously planned travel arrangements. I tried to cancel the flight due to the extenuating circumstances. Underpricer said canceling was not possible, but a credit would be possible for the exact same flight - one way from Dublin - to be used in one year from the original flight date. I asked if it would be possible to make the credit a general credit to any participating AerLingus airport destination, which would allow more flexibility than having to go back to Ireland within a year. In order to pursue the credit, Underpricer requested documentary proof regarding my sister in laws brain tumor, which we gave them. Underpricer then asked us to document our relationship to the patient - so I gave them my marriage certificate to evidence my wife and her sister having the same last name. Underpricer asked for further proof, so we gave them copies of my passport, my wife’s passport, and my sister in laws passport. All of these hoops to jump through for Underpricer, with sporadic communication on their part throughout, only for them to say 3 days before the original booking that no credit was available - not even the one they originally offered. They said my only option was to pick a date within the next year to move the flight to - and of course to make that change, they charged me an additional $350 fee just to make that change. What a pathetic, fraudulent organization. Kayak should be embarrassed to be associated with Underpricer and should cease that relationship immediately. And for AerLingus, who only Underpricer could talk to regarding the booking (I was not permitted) to not understand our family’s situation and just stand by blanket policy that no credit is permitted, is equally disappointing.
Underpricer is a terrible organization that inserted itself as a “travel agent” simply by way of me booking on kayak. Never would I have willing assented to using underpricer. Further, we had a problem whereby two duplicate one-way flights from Dublin were inadvertently booked for me and my wife, stemming from a family emergency. My wife’s sister / my sister in law had a brain tumor and immediate surgery to remove it, which obviously impacted our previously planned travel arrangements. I tried to cancel the flight due to the extenuating circumstances. Underpricer said canceling was not possible, but a credit would be possible for the exact same flight - one way from Dublin - to be used in one year from the original flight date. I asked if it would be possible to make the credit a general credit to any participating AerLingus airport destination, which would allow more flexibility than having to go back to Ireland within a year. In order to pursue the credit, Underpricer requested documentary proof regarding my sister in laws brain tumor, which we gave them. Underpricer then asked us to document our relationship to the patient - so I gave them my marriage certificate to evidence my wife and her sister having the same last name. Underpricer asked for further proof, so we gave them copies of my passport, my wife’s passport, and my sister in laws passport. All of these hoops to jump through for Underpricer, with sporadic communication on their part throughout, only for them to say 3 days before the original booking that no credit was available - not even the one they originally offered. They said my only option was to pick a date within the next year to move the flight to - and of course to make that change, they charged me an additional $350 fee just to make that change. What a pathetic, fraudulent organization. Kayak should be embarrassed to be associated with Underpricer and should cease that relationship immediately. And for AerLingus, who only Underpricer could talk to regarding the booking (I was not permitted) to not understand our family’s situation and just stand by blanket policy that no credit is permitted, is equally disappointing.
Underpricer is a terrible organization that inserted itself as a “travel agent” simply by way of me booking on kayak. Never would I have willing assented to using underpricer. Further, we had a problem whereby two duplicate one-way flights from Dublin were inadvertently booked for me and my wife, stemming from a family emergency. My wife’s sister / my sister in law had a brain tumor and immediate surgery to remove it, which obviously impacted our previously planned travel arrangements. I tried to cancel the flight due to the extenuating circumstances. Underpricer said canceling was not possible, but a credit would be possible for the exact same flight - one way from Dublin - to be used in one year from the original flight date. I asked if it would be possible to make the credit a general credit to any participating AerLingus airport destination, which would allow more flexibility than having to go back to Ireland within a year. In order to pursue the credit, Underpricer requested documentary proof regarding my sister in laws brain tumor, which we gave them. Underpricer then asked us to document our relationship to the patient - so I gave them my marriage certificate to evidence my wife and her sister having the same last name. Underpricer asked for further proof, so we gave them copies of my passport, my wife’s passport, and my sister in laws passport. All of these hoops to jump through for Underpricer, with sporadic communication on their part throughout, only for them to say 3 days before the original booking that no credit was available - not even the one they originally offered. They said my only option was to pick a date within the next year to move the flight to - and of course to make that change, they charged me an additional $350 fee just to make that change. What a pathetic, fraudulent organization. Kayak should be embarrassed to be associated with Underpricer and should cease that relationship immediately. And for AerLingus, who only Underpricer could talk to regarding the booking (I was not permitted) to not understand our family’s situation and just stand by blanket policy that no credit is permitted, is equally disappointing.
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 45m 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 34 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 £504, Finnair can have you in Seattle from Dublin in 25h 45m. 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, Icelandair (£339), British Airways (£365), and Aer Lingus (£406) offers the cheapest pricing from Dublin to Seattle. You may be able to fly from Dublin to Seattle for 39% less than the average price by searching for these airlines.
What are the most reliable airlines from Dublin to Seattle?
Consider American Airlines (81%), Aer Lingus (81%) or Iberia (81%) 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 £1,572, our data indicates the cheapest price to be £594. The most popular route (Dublin - Seattle/Tacoma Intl), is priced around £857.
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, April is the cheapest month in which you can book a flight from Dublin to Seattle (average of £445). Flying from Dublin to Seattle in July is currently the most expensive (average of £769). 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.
Explore flights to Seattle departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 30 August 2026.
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 7,457,451 searches. Data last updated 30 August 2026.
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!
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
We value your privacy
Cheapflights and its partners wish to use cookies or similar technologies to store and/or access information on and about your device and process personal data such as your IP address, device identifiers etc., in order to improve your experience on the site, to analyse navigation, to offer and measure personalised advertising, and to facilitate sharing on social networks. We also allow the use of third-party cookies (including those from our advertising partners) on our sites.
By clicking 'Accept', you consent to your data being processed by 0 vendors on this web site for the purposes described in this notice. You can review the vendors and their individual processing purposes on the .
To review individual processing purposes and cookie categories, please click ’Select individual purposes’. You can review your choices and withdraw your consent at any time by clicking the ’Privacy Preferences’ link in the page side navigation.