C$365 Cheap Flights from Seattle / Tacoma International to Dublin

Your route at a glance

Cheapest dealC$494

Cheapest monthJanuary

Average flight duration9 hours and 3 minutes

Flight deals from Seattle / Tacoma International to Dublin

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

Dublin.C$365 per passenger.Departing Mon., Jan. 26.One-way flight with WestJet.Outbound indirect flight with WestJet, departs from Seattle / Tacoma International on Mon., Jan. 26, arriving in Dublin.Price includes taxes and charges.From C$365, select.

Dublin.C$389 per passenger.Departing Sat., May 9.One-way flight with WestJet.Outbound indirect flight with WestJet, departs from Seattle / Tacoma International on Sat., May 9, arriving in Dublin.Price includes taxes and charges.From C$389, select.

Dublin.C$390 per passenger.Departing Sun., Feb. 8.One-way flight with WestJet.Outbound indirect flight with WestJet, departs from Seattle / Tacoma International on Sun., Feb. 8, arriving in Dublin.Price includes taxes and charges.From C$390, select.

Dublin.C$401 per passenger.Departing Tue., Mar. 3.One-way flight with WestJet.Outbound indirect flight with WestJet, departs from Seattle / Tacoma International on Tue., Mar. 3, arriving in Dublin.Price includes taxes and charges.From C$401, select.

Dublin.C$413 per passenger.Departing Fri., Jun. 5.One-way flight with WestJet.Outbound indirect flight with WestJet, departs from Seattle / Tacoma International on Fri., Jun. 5, arriving in Dublin.Price includes taxes and charges.From C$413, select.

Dublin.C$465 per passenger.Departing Wed., Dec. 31.One-way flight with Icelandair.Outbound indirect flight with Icelandair, departs from Seattle / Tacoma International on Wed., Dec. 31, arriving in Dublin.Price includes taxes and charges.From C$465, select.

Dublin.C$474 per passenger.Departing Tue., Apr. 14.One-way flight with Hawaiian Airlines.Outbound indirect flight with Hawaiian Airlines, departs from Seattle / Tacoma International on Tue., Apr. 14, arriving in Dublin.Price includes taxes and charges.From C$474, select.

Dublin.C$529 per passenger.Departing Wed., Sep. 30.One-way flight with Icelandair.Outbound indirect flight with Icelandair, departs from Seattle / Tacoma International on Wed., Sep. 30, arriving in Dublin.Price includes taxes and charges.From C$529, select.

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

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

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Direct flights from Seattle / Tacoma International to Dublin

Seattle / Tacoma International to Dublin: Alternative routes

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

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

How much are return flights from Seattle / Tacoma International to Dublin?

The best price we found for a return flight from Seattle / Tacoma International to Dublin is C$494. 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.

How long does it take to fly from Seattle / Tacoma International to Dublin?

9 hours and 3 minutes is the average flight time from Seattle / Tacoma International to Dublin.

Which airlines fly direct from Seattle / Tacoma International to Dublin?

British Airways, Aer Lingus and American Airlines fly direct from Seattle / Tacoma International to Dublin.

How many flights are there a week from Seattle / Tacoma International to Dublin?

As of December 2025, there are 20 flights per week flying from Seattle / Tacoma International to Dublin.

When is the cheapest time to fly from Seattle / Tacoma International to Dublin?

The cheapest month to fly from Seattle / Tacoma International to Dublin is usually January.

Which upcoming date is cheapest to fly from Seattle / Tacoma International Airport to Dublin Airport on?

After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Seattle / Tacoma International Airport to Dublin Airport on Saturday, January 31, 2026.

Can I get a direct flight from Seattle / Tacoma International Airport to Dublin Airport?

Yes – the average flight time is 9 hours and 3 minutes.

How can I find the best flight deal to Dublin?

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 Dublin 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.

When is the best time to book flights to Dublin?

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Dublin is around 40 days in advance, so don’t leave your flight to the last minute.

Which is the cheapest airline to fly from Seattle / Tacoma International Airport to Dublin with?

Currently, Icelandair and Aer Lingus offer the cheapest flight tickets to Dublin.

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

A direct flight from Seattle-Tacoma International Airport to Dublin Airport takes an average of 9 hours 7 minutes. The timezone in Dublin is UTC+0, which is 7 hours ahead of Seattle.
Each week, there are 6 flights from Seattle-Tacoma International Airport to Dublin Airport. If you want to get going as soon as possible, select the 15:20 Aer Lingus flight. If you'd rather make the most of your time before you fly, the last departure from SEA to DUB is 21:00 with Aer Lingus.
Traveling during a peak time like July? Public holidays and other high seasons can result in longer lines at check-in and security. Play things extra safe and get there up to four hours before international flights and two hours before domestic departures.
Aer Lingus offers direct flights from Seattle-Tacoma International Airport to Dublin Airport. Book with this popular airline, then get ready to discover the sights in Dublin — and maybe even more of Ireland if your schedule allows.
If you'd like to break up your flight from Seattle-Tacoma International Airport to Dublin Airport, think about adding a stopover. Simply uncheck 'Direct flights only' to find a destination that appeals to you. The top stopovers on the SEA - DUB route are:
- Vancouver International Airport
- London Heathrow Airport
- Keflavik International Airport

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

C$365 is the lowest price for a one-way ticket from Seattle-Tacoma International Airport to Dublin Airport. Return flights start from C$494. These fares can change depending on demand and availability.
To find cheap flight tickets from SEA to DUB, book in advance. Airlines tend to offer their best fares when flights are first made available.
Schedule your trip for August. That's the cheapest month for flight tickets from Seattle-Tacoma International Airport to Dublin Airport. If you're flexible with your travel dates, try out the 'Whole month' tool to see the cheapest price across each month.
Getting a cheap ticket from SEA to DUB couldn't be easier with Price Alerts. Simply set up one of these automatic alerts and we'll let you know as soon as there's a better deal.
Use filters to tailor your flights from Seattle-Tacoma International Airport to Dublin Airport. Simply enter your preferred arrival and departure times, airlines and number of stops. Alternatively, sort your results by 'Cheapest' to see the best deals.

Handy information about Seattle-Tacoma International Airport (SEA)

The journey from central Seattle to Seattle-Tacoma International Airport takes approximately 54 minutes by public transport. If you ride-share, drive or grab a cab, you'll cover the 23 kilometres in 18 minutes or so, depending on traffic conditions.
Want an easy start to your trip? Stay near SEA. Whether you're taking an early flight from Seattle-Tacoma International Airport to Dublin Airport or just don't like being rushed, these stays are ideal:

Arriving at Dublin Airport (DUB)

Consider booking a hotel near DUB if you're catching a late flight from Seattle-Tacoma International Airport to Dublin Airport. Select one of these options and avoid the hassle of a long transfer:

Getting from Dublin Airport (DUB) to central Dublin

Dublin Airport to the center of Dublin takes around 29 minutes in a car. It's approximately 21 kilometres away. Find out what options are available, such as cabs, car rentals or ride-sharing.
If you're taking public transport, expect a journey of around 2 hours and 9 minutes.

When to fly to Dublin Airport (DUB)

August is the busiest month for flights from Seattle-Tacoma International Airport to Dublin Airport. To escape the crowds, go to Dublin in February.
Lock in your flight from Seattle-Tacoma International Airport to Dublin Airport for July if you'd like to go to Dublin during its warmest month. You can expect temperatures of between 10ºC and 20ºC.
If you'd rather travel in cooler conditions, search for a cheap ticket from SEA to DUB in January. Temperatures average between 1ºC and 9ºC then.

More about Dublin

Start your Dublin trip right by finding a great place to stay. Once you've booked your flight from SEA to DUB, explore our accommodation options including:
Guinness Storehouse and Trinity College Library are just the start of the big attractions to put on your Dublin itinerary. Keep the momentum going by heading to Dublin Castle.

Complete your Dublin trip with hotels and a car rental

You've booked a cheap ticket to Dublin Airport — now it's time to find somewhere to stay, and maybe even a set of wheels. We've compared prices across hundreds of companies to bring you the top hotels and car rental deals in Dublin.