Cheap Flights from Dublin (DUB) to Seattle (SEA)

View AU$1,089 flight on Thu, 11 Sep. 2025Opens in a new window

Popular airlines from Dublin Airport (DUB) to Seattle-Tacoma International Airport (SEA)

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 35% on select hotels after you book a flight*
  • payments icon

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap Flights from Dublin (DUB) to Seattle (SEA)

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

Find the cheapest month to fly from Dublin (DUB) to Seattle (SEA)

April is typically the cheapest month to fly

From AU$577 - AU$1,403 per traveller.

Graph displaying average flight prices per month

Flight from Dublin to Seattle route information
Origin airport
Dublin
Destination airport
Seattle - Tacoma Intl.
Distance
7241 km
Average flight time
9 hours 40 mins

Your quick guide to flights from Dublin to Seattle

Pick up great flights from Dublin to Seattle

With Expedia, you have your pick of 3 flights a day with 20 airlines covering flights from Dublin to Seattle. Whether you’re on a business trip, a family holiday or a luxury break, just enter your travel dates, hit search then check out your choice of flights. Select from return, one way or multi-city flights, and use the advance search tool if you want a direct or refundable flight. You can narrow your search to show you just your preferred cabin class and airline, too. It’s all easy. You can book direct flights from Dublin to Seattle that take around 9 hours.

Find cheap flights from Dublin to Seattle

From the great flight deals with prices currently ranging from to , you can choose to see the cheapest flights first. Generally, you can book the cheapest flights from Dublin to Seattle around 4 to 6 weeks in advance. If your travel dates are flexible, try to avoid weekends and peak seasons – when you are more likely to grab the lowest prices. Even last minute, there are some impressive deals. The cheapest time to fly to Seattle is normally in .

Reasons to book your flight from Dublin to Seattle with Expedia

Expedia makes it easy to find, book, and travel, with everything you need all in one place. When you enter your travel details, find fantastic deals just for you on flight tickets from Dublin to Seattle across all the main airline carriers, so you can save time, dollars, and hassle finding the perfect flight. If you think your plans could change, choose refundable flights so any changes won’t cost you more. Book your flight to Seattle right now and, if you join Expedia Rewards, you earn points this time and every time you travel with Expedia.

Frequently asked questions

How much is a flight from DUB to SEA?
Based on airfares available within the last 7 days on Expedia for flights departing within the next year, round-trip flights from DUB to Sea-Tac Airport start from . Book now to score the best price for your next big adventure. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from DUB to Seattle - Tacoma Intl. Airport (SEA)?
Most flights can be cancelled online, but every airline has its own set of terms and conditions. If you do decide to cancel your flight, visit our Customer Service Portal and follow the instructions.
How do I find cheap flights from Dublin Airport to Sea-Tac Airport that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for DUB to Sea-Tac Airport flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Dublin Airport to Seattle - Tacoma Intl. Airport (SEA)?
The distance is around 7 300 kilometres, so fill your carry-on bag with all the items you need to make the long journey comfortable. Not sure what to take on board your Corballis to SeaTac flight? A sleep mask, earplugs and a travel pillow are among the essentials.
Which airlines fly direct from DUB to SEA?
A popular choice with many frequent travellers, Aer Lingus (EI) operates 17 monthly flights from DUB to SEA. Pick the one that fits with your travel schedule and book your seat today.
Are Dublin Airport (DUB) to SEA flight tickets cheaper when they're purchased at the last minute?
Tickets from Dublin Airport (DUB) to Sea-Tac Airport are available up to 12 months prior to departure on Expedia. And although you may occasionally pick up a great last-minute deal, it's never something you can count on. Also, booking your flights in advance means you'll have more choices — and you can avoid getting trapped in the dreaded middle seat! We frequently update our fares to make sure you get the biggest bargains, so keep checking in for all the latest specials.

Explore a world of travel with Expedia

*Available to Expedia members.