Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Dublin are usually found in February or November, booked 26 days in advance, depart on a Monday or Friday and return on a Friday
Find flight deals from Seattle to Dublin
Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Dublin (DUB). 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 28 April 2026.
Popular in
June
Cheapest in
February
Average price
£496
Good one-way deal
£362 or less
Highest demand for flights based on searches. 19% potential increase in price (£82 potential increase over avg. return price).
Have a flexible travel schedule? Discover the best time to fly to Dublin from Seattle with our price prediction graph.
SEA-DUB
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 Seattle to Dublin
How far ahead should I book a flight from Seattle to Dublin?
The price you pay for your flight from Seattle to Dublin may vary depending on when you book. For the best chance of a lower fare, look to book 25 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from Seattle to Dublin?
Currently, February is the cheapest month in which you can book a flight from Seattle to Dublin (average of £344). Flying from Seattle to Dublin in June is currently the most expensive (average of £647). 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 SEA to DUB?
Find hourly flight availability from Seattle to Dublin. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 28 April 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to Dublin as you normally would.
Reviews of airlines servicing Dublin
Get insights into the airlines that provide service to Dublin. 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 Dublin. Reviews last updated 28 April 2026.
Check out reviews from past customers who have flown with Aer Lingus from Seattle to Dublin to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
I didn’t happen, my seat was given away because even though my bag was checked through to Dublin apparently the previous airline didn’t check me in. Even when I asked specifically at check in they said I and my luggage we both checked all the way through.
I didn’t happen, my seat was given away because even though my bag was checked through to Dublin apparently the previous airline didn’t check me in. Even when I asked specifically at check in they said I and my luggage we both checked all the way through.
Related info for your journey
Find useful and relevant information for your journey from Seattle to Dublin. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
How popular is this Seattle to Dublin flight route?
This flight path from Seattle/Tacoma Intl to Dublin was viewed by 19 users in the past month. Keep an eye out for changes in search interest prior to high and low season.
What is the cheapest airline to fly from Seattle to Dublin round-trip?
Aer Lingus, at £246, was found to be the cheapest airline from Seattle to Dublin.. Aer Lingus is 46% cheaper than the average price of flights available within the next 90 days to this destination.
What are the most reliable airlines from Seattle to Dublin?
Consider American Airlines (79%), Aer Lingus (79%) or Iberia (79%) when booking your flight. These represent the most reliable airlines when flying from Seattle to Dublin.
Can I find deals for flights from Seattle to Dublin that include hotel bookings?
Yes. In addition to deals on Seattle to Dublin flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Seattle to Dublin?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Dublin.
Can I find deals for business class flights from Seattle to Dublin?
Yes. Cheapflights offers flight deals from Seattle to Dublin 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 Seattle to Dublin?
Currently, February is the cheapest month in which you can book a flight from Seattle to Dublin (average of £344). Flying from Seattle to Dublin in June is currently the most expensive (average of £647). 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 Dublin departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 28 April 2026.
Discover the top airline that operate flights from Seattle to Dublin. 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 28 April 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 Seattle to Dublin?
When you search for this flight from Seattle to Dublin, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.
Why should you use Cheapflights to find cheap flight tickets from Seattle to Dublin?
Cheapflights helps you find that perfect flight to Dublin from Seattle by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!
Can Cheapflights find flights from Seattle to Dublin with no change fees?
Users can book flights with no change fees policies with our dedicated filters. Book flights from Seattle to Dublin flexibly with Cheapflights today.
Can Cheapflights notify me if prices for flights from Seattle to Dublin 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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