Cheap Flights from Seattle to Dublin

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Find the cheapest month or even day of the year to fly to Dublin

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Flight deals from Seattle to Dublin

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

Dublin.$812 per passenger.Departing Sat, 10 Jan, returning Thu, 15 Jan.Return flight with Icelandair.Outbound indirect flight with Icelandair, departs from Seattle / Tacoma International on Sat, 10 Jan, arriving in Dublin.Inbound indirect flight with Icelandair, departs from Dublin on Thu, 15 Jan, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $812, select.

Dublin.$820 per passenger.Departing Mon, 2 Feb, returning Wed, 11 Feb.Return flight with Icelandair.Outbound indirect flight with Icelandair, departs from Seattle / Tacoma International on Mon, 2 Feb, arriving in Dublin.Inbound indirect flight with Icelandair, departs from Dublin on Wed, 11 Feb, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $820, select.

Dublin.$821 per passenger.Departing Tue, 24 Feb, returning Tue, 3 Mar.Return flight with Icelandair.Outbound indirect flight with Icelandair, departs from Seattle / Tacoma International on Tue, 24 Feb, arriving in Dublin.Inbound indirect flight with Icelandair, departs from Dublin on Tue, 3 Mar, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $821, select.

Dublin.$822 per passenger.Departing Thu, 29 Jan, returning Thu, 5 Feb.Return flight with Icelandair.Outbound indirect flight with Icelandair, departs from Seattle / Tacoma International on Thu, 29 Jan, arriving in Dublin.Inbound indirect flight with Icelandair, departs from Dublin on Thu, 5 Feb, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $822, select.

Dublin.$835 per passenger.Departing Wed, 29 Apr, returning Wed, 6 May.Return flight with United.Outbound indirect flight with United, departs from Seattle / Tacoma International on Wed, 29 Apr, arriving in Dublin.Inbound indirect flight with United, departs from Dublin on Wed, 6 May, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $835, select.

Dublin.$835 per passenger.Departing Tue, 5 May, returning Wed, 13 May.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from Seattle / Tacoma International on Tue, 5 May, arriving in Dublin.Inbound indirect flight with Air Canada, departs from Dublin on Wed, 13 May, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $835, select.

Dublin.$838 per passenger.Departing Sat, 22 Aug, returning Sat, 29 Aug.Return flight with Scandinavian Airlines.Outbound indirect flight with Scandinavian Airlines, departs from Seattle / Tacoma International on Sat, 22 Aug, arriving in Dublin.Inbound indirect flight with Scandinavian Airlines, departs from Dublin on Sat, 29 Aug, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $838, select.

Dublin.$843 per passenger.Departing Wed, 4 Mar, returning Wed, 11 Mar.Return flight with Icelandair.Outbound indirect flight with Icelandair, departs from Seattle / Tacoma International on Wed, 4 Mar, arriving in Dublin.Inbound indirect flight with Icelandair, departs from Dublin on Wed, 11 Mar, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $843, select.

Find the cheapest month to fly from Seattle to Dublin

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

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Direct flights from Seattle to Dublin

Seattle to Dublin: Alternative routes

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

Seattle to Dublin: Flight information

The things to know before you go.

Cheapest flight found	$812
Cheapest month to fly	January
Average flight time	9 hrs, 3 mins
Most popular airline	British Airways
Average flights per week	25

Finding cheap flights from Seattle to Dublin: Frequently asked questions

How much are return flights from Seattle to Dublin?

The best price we found for a return flight from Seattle to Dublin is $812. 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 to Dublin?

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

Which airlines fly direct from Seattle to Dublin?

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

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

As of December 2025, there are 25 flights per week flying from Seattle to Dublin.

When is the cheapest time to fly from Seattle to Dublin?

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

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

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Seattle to Dublin Airport on Saturday, 10 January 2026.

Can I get a direct flight from Seattle 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.

Travelling from Seattle to Dublin Airport (DUB): What you need to know

There are a couple of airports you can take off from in Seattle. Check out your options departing from Seattle-Tacoma International Airport (SEA) or Lake Union Sea Plane Base Airport (LKE) when searching for a flight from Seattle to Dublin Airport (DUB).
Around 9 hours is how long you'll be in the air on a direct Seattle to Dublin Airport flight.
Dublin Airport is located in Dublin. The city follows the UTC+0 timezone and is seven hours ahead of Seattle.
Seattle-Tacoma International Airport (SEA) to Dublin Airport (DUB) is the busiest route, with 5 direct services each week. Travel from SEA to DUB on Aer Lingus's 6:45pm flight.
Give yourself plenty of time to get on your flight from Seattle to DUB. As a general rule, arrive two hours before international departures and an hour ahead for domestic flights.
Travelling during a peak period like public or school holidays? Expect longer lines at security and check-in. Give yourself extra leeway and arrive up to four hours before international flights and two hours ahead of domestic departures.

Airports in Seattle

Seattle-Tacoma International Airport (SEA)

Fly without interruptions from Seattle-Tacoma International Airport (SEA). Nonstop flights from Seattle to Dublin Airport (DUB) operate from here.
When leaving from SEA, you can take a direct flight from Seattle to Dublin Airport with Aer Lingus.
The majority of travellers prefer to fly with Aer Lingus from SEA to DUB.
The most reliable carrier for punctuality on this route is Aer Lingus. Its services arrive as planned 77.78% of the time.
Think about adding a stopover to find cheap flights from Seattle to DUB. Just deselect 'Direct flights only' when browsing departures from Seattle-Tacoma International Airport (SEA). Take a break from travelling at one of these popular airports:
- London Heathrow Airport (LHR)
- Vancouver International Airport (YVR)
- Keflavik International Airport (KEF)
SEA is around 23 kilometres from central Seattle. If you're driving, ride-sharing or catching a cab from the centre, it'll take 20 minutes or so to get there, depending on traffic. If you're planning to take public transport, expect the travel time to be around 55 minutes.
Want a leisurely start to your journey? Stay near Seattle-Tacoma International Airport. Whether you're boarding an early flight from Seattle to Dublin Airport or just don't want to be rushed, these hotels are the answer:
81.27% of flights departing from Seattle-Tacoma International Airport reach their destination according to schedule. With its reliable on-time performance, you're unlikely to be delayed when flying out of SEA.

Lake Union Sea Plane Base Airport (LKE)

You can get to LKE from the centre of Seattle in about 10 minutes by car, depending on traffic. The journey by public transport takes roughly 25 minutes to cover the 3 kilometres or so.
Taking off bright and early? You might like to check in to one of these accommodation options near Lake Union Sea Plane Base Airport the day before your Seattle to DUB flight:

About Dublin Airport (DUB)

Have a late flight from Seattle to Dublin Airport? Don't let it steal your sleep. Check in to one of these hotels near DUB and turn out the lights sooner:
Get on the fast track to adventure by picking up a Dublin Airport rental car. Grab a set of wheels from Easirent, Budget or Carhire to explore Dublin and beyond.
Booking your vehicle around two weeks in advance of your Seattle to Dublin Airport flight can help you secure the lowest rate.

Getting from Dublin Airport (DUB) to central Dublin

Central Dublin is about 8 kilometres from Dublin Airport. Travel times by car hire or cab will vary based on traffic conditions and time of day, so do some research before your trip.
Travelling by public transport will take you roughly 2 hours 10 minutes.

How to find the cheapest flights from Seattle to Dublin Airport (DUB)

Right now, $651 is the lowest price we've found for a one-way ticket from Seattle to Dublin Airport. The cheapest price for a return flight is $812. Keep in mind fares may change due to demand at the time of booking.
To snap up cheap flights from Seattle to DUB, book your flight ticket three months ahead of your planned departure.
The best month for finding cheap Seattle to Dublin Airport tickets is August. Use the 'Whole month' tool to compare flight prices, then select the dates with the lowest fares.
Snapping up a cheap flight ticket from Seattle to DUB is a breeze with Price Alerts. All you need to do is create one of these automatic alerts and we'll notify you as soon as there's a price drop.
Hunt down a great price on a flight from Seattle to Dublin Airport with the help of the filters. Pick your ideal departure and arrival times, number of stops and airlines. You can also sort your results by 'Fastest,' 'Cheapest' or 'Best.'

The best time to fly from Seattle to Dublin Airport (DUB)

February is the quietest month for flights from Seattle to Dublin Airport (DUB), while August is the busiest. Work out the best time to go to Dublin based on whether you prefer a laid-back vibe or a lively atmosphere.
Lock in a Seattle to DUB flight ticket departing in July if you want to visit the city during its warmest month. You can expect temperatures in Dublin to range from 10ºC to 20ºC.
Look for cheap tickets from Seattle to Dublin Airport in January if you'd rather travel when it's cooler. Temperatures are at their lowest then, ranging between 1ºC and 9ºC.

More about Dublin

Once you've booked your flight from Seattle to Dublin Airport, find a hotel that offers the right mix of comfort and location. Make one of these accommodation options your base for exploring Dublin:
There are plenty of things to do in Dublin when you're in the mood to sightsee. Kick off your exploring at Trinity College Library followed by Guinness Storehouse and St. Patrick's Cathedral.

Explore more of Ireland

Cork is just one of the many places in Ireland waiting to be explored after you've experienced Dublin. Around 225 kilometres away to the south-west, its best attractions include Blarney Castle, Blarney Castle House(Teach Caisleán na Blarnan) and Blarney Stone.
If you're ready to explore another side of Ireland, head for Waterford, about 145 kilometres south-west of Dublin. Bishop's Palace, Christ Church Cathedral and Waterford Treasures Medieval Museum are highlights.