€535 Cheap Flights Dublin to Seattle (DUB-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 €484. Book now to score the best price for your next big adventure. Prices and availability are subject to change. Additional terms apply.

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.

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.

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.

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.

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.