Cheap Flights from Dublin to Seattle / Tacoma International

Compare Dublin to Seattle / Tacoma International flight deals

Find the cheapest month or even day of the year to fly to Seattle / Tacoma International

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Flight deals from Dublin to Seattle / Tacoma International

Looking for a cheap last-minute deal or the best return flight from Dublin to Seattle / Tacoma International? Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Dublin to Seattle / Tacoma International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Dublin to Seattle / Tacoma International flights are currently cheapest in October.

Direct flights from Dublin to Seattle / Tacoma International

Dublin to Seattle / Tacoma International: Alternative routes

Compare routes from Dublin to Seattle below. You may find an airport to fly into that's cheaper, faster, or easier than Seattle / Tacoma International.

Dublin to Seattle: Flight information

The things to know before you go.
Cheapest flight foundR 5,901
Cheapest month to flyOctober
Average flight time9 hrs, 45 mins
Most popular airlineAer Lingus
Average flights per week18

Finding cheap flights from Dublin to Seattle / Tacoma International: Frequently asked questions

The best price we found for a return flight from Dublin to Seattle / Tacoma International is R 8,023. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
9 hours and 45 minutes is the average flight time from Dublin to Seattle / Tacoma International.
Aer Lingus, British Airways and American Airlines fly direct from Dublin to Seattle / Tacoma International.
As of September 2025, there are 18 flights per week flying from Dublin to Seattle / Tacoma International.
The cheapest month to fly from Dublin to Seattle / Tacoma International is usually May.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Dublin Airport to Seattle / Tacoma International Airport on Friday, 22 May 2026.
Yes – the average flight time is 9 hours and 45 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Seattle / Tacoma International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Seattle is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Scandinavian Airlines and Aer Lingus offer the cheapest flight tickets to Seattle / Tacoma International.

Flying from Dublin Airport (DUB) to Seattle-Tacoma International Airport (SEA): what you need to know

  • Around 9 hours 45 minutes is how long you'll be travelling on a direct flight from Dublin Airport to Seattle-Tacoma International Airport.

  • The timezone in Seattle is UTC-7, which is seven hours behind Dublin.

  • Flights from DUB to SEA start from 15:20 — the earliest with Aer Lingus. The latest departure is at 16:30 with Aer Lingus. In total, you can choose from six weekly Dublin Airport to Seattle-Tacoma International Airport flights.

  • To ensure you get on your DUB to SEA flight, allow plenty of time to check in and drop off your luggage. Arriving two hours ahead of international departures and an hour before domestic flights is the standard rule.

  • Travelling during a peak time such as August? Public holidays and other popular seasons can result in longer queues and delays at airport checkpoints. Play things extra safe and arrive up to four hours before international flights and two hours before a domestic departure.

  • Aer Lingus is your ticket to exploring Seattle (and perhaps some other great parts of United States!). Check out the direct flights from Dublin Airport to Seattle-Tacoma International Airport offered by this popular carrier.

  • The majority of travellers choose to travel with Aer Lingus on this route.

  • Aer Lingus is the most punctual carrier operating DUB to SEA flights, with 70.37% of its services landing on schedule.

  • We make it a piece of cake to book a flight with a stopover. To see your options for tickets from Dublin Airport to Seattle-Tacoma International Airport, uncheck 'Direct flights only.' Then, choose a flight offering a stop long enough to explore the city of your choice. Stopovers between DUB and SEA include:

    • Vancouver International Airport

    • London Heathrow Airport

    • Amsterdam Airport Schiphol

How to find the cheapest flights from Dublin Airport (DUB) to Seattle-Tacoma International Airport (SEA)

  • Currently, R 5,901 is the lowest price we've seen for a one-way Dublin Airport to Seattle-Tacoma International Airport flight. The best price for a return plane ticket is R 8,023. Bear in mind that fares may change due to availability at the time of booking.

  • Book seven months before your departure date. After looking at the numbers on our calendar, this is how far you'll want to book ahead to find cheap tickets from DUB to SEA.

  • June is the cheapest month for flights from Dublin Airport to Seattle-Tacoma International Airport. If you need to travel during a different time of year, the 'Whole month' tool will give you the lowest prices for every month.

  • Picking up cheap flights from DUB to SEA is a cinch with Price Alerts. Simply set up one of these automatic alerts and we'll let you know when fares go down.

  • Tailor your flights with filters. Choose your departure and arrival times, total journey duration and airlines. You can also sort the results by 'Best,' 'Fastest' or 'Cheapest' flights from Dublin Airport to Seattle-Tacoma International Airport.

Handy information about Dublin Airport (DUB)

  • Of all flights departing from Dublin Airport, 72.87% land on schedule at their destination.

  • Central Dublin to Dublin Airport is approximately 21 kilometres. Depending on traffic, it'll take about 30 minutes to get there if you're catching a cab, ride-sharing or driving.

  • The trip when using public transport takes roughly 2 hours 10 minutes.

  • Get your trip off to a leisurely start by staying near DUB. Whether you're catching an early flight from Dublin Airport to Seattle-Tacoma International Airport or just don't want to be rushed, these hotels are perfect:

Arriving at Seattle-Tacoma International Airport (SEA)

Getting from Seattle-Tacoma International Airport (SEA) to central Seattle

  • From Seattle-Tacoma International Airport, Seattle is approximately 23 kilometres away. It takes around 20 minutes to get to the centre driving.

  • It takes roughly 55 minutes to get there by public transport.

When to fly to Seattle-Tacoma International Airport (SEA)

  • The quietest month for a flight from Dublin Airport to Seattle-Tacoma International Airport is May, while July is the most popular. Pick the ideal time to visit Seattle based on whether you prefer a more fast-paced or easygoing experience.

  • When reserving your flight from Dublin Airport to Seattle-Tacoma International Airport, think about the type of weather you enjoy. August is the warmest month in Seattle, with temperatures ranging from 12ºC (54ºF) to 28ºC (82ºF).

  • Look for cheap tickets from DUB to SEA in February if you like travelling in cooler conditions. Temperatures are at their lowest then, ranging between -1ºC (30ºF) and 11ºC (52ºF) on average.

Explore more of United States

  • Portland is just one of the many places in United States waiting to be discovered once you've seen the sights of Seattle. Around 241 kilometres away to the south, its best attractions include Pioneer Courthouse Square, Portland Japanese Garden and Pittock Mansion.

  • If you want to check out another well-known destination in United States, consider Spokane, roughly 370 kilometres east of Seattle. Manito Park, Northwest Museum of Arts & Culture and Spokane Falls are highlights.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.