$333 Find Cheap Flights from Ireland to Seattle

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Seattle departing on 5/1. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Seattle

 
These are the airlines KAYAK users have selected most often from within our search results for flights to Seattle, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results for flights to Seattle, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$403
Typical prices: $570-$762
Icelandair
Tue 2/24Tue 3/3
DUB - SEA • 1 stop
Cheapest non-stop
$563
Typical prices: $635-$787
Aer Lingus
Fri 3/27Wed 4/8
DUB - SEA • Non-stop
When to travel
February
Cheapest • 14% price drop
August
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Seattle!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Ireland to Seattle

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ireland to Seattle that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Ireland to Seattle

Tue, Feb 24 - Tue, Mar 3
Icelandair Logo
11:30 am - 5:00 pmDUB-SEA
13h 30m1 stop
Icelandair Logo
2:35 pm - 10:15 amSEA-DUB
11h 40m1 stop
$403Icelandair
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Mon, Jan 26 - Sun, Feb 8
Icelandair Logo
11:30 am - 5:00 pmDUB-SEA
13h 30m1 stop
Icelandair Logo
2:35 pm - 10:15 amSEA-DUB
11h 40m1 stop
$406Icelandair
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Tue, Feb 24 - Tue, Mar 3
Icelandair Logo
11:30 am - 5:00 pmDUB-SEA
13h 30m1 stop
Icelandair Logo
2:35 pm - 10:15 amSEA-DUB
11h 40m1 stop
$415Icelandair
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Tue, Jan 13 - Tue, Jan 20
Icelandair Logo
11:30 am - 5:00 pmDUB-SEA
13h 30m1 stop
Icelandair Logo
2:35 pm - 10:15 amSEA-DUB
11h 40m1 stop
$430Icelandair
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Fri, Jan 23 - Wed, Jan 28
Icelandair Logo
11:30 am - 5:00 pmDUB-SEA
13h 30m1 stop
Icelandair Logo
2:35 pm - 10:15 amSEA-DUB
11h 40m1 stop
$436Icelandair
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Thu, Apr 9 - Thu, Apr 16
American Airlines Logo
11:45 am - 11:35 amORK-SEA
31h 50m1 stop
American Airlines Logo
1:35 pm - 10:45 amSEA-ORK
13h 10m1 stop
$708American Airlines
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Wed, Jan 28 - Sun, Feb 1
American Airlines Logo
7:50 am - 4:55 pmSNN-SEA
17h 05m1 stop
American Airlines Logo
8:04 am - 4:45 pmSEA-SNN
24h 41m2 stops
$711American Airlines
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Thu, Apr 9 - Thu, Apr 16
British Airways Logo
8:30 pm - 11:35 amORK-SEA
23h 05m1 stop
British Airways Logo
1:35 pm - 3:10 pmSEA-ORK
17h 35m1 stop
$711British Airways
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Wed, Jan 28 - Sun, Feb 1
British Airways Logo
7:50 am - 2:34 pmSNN-SEA
38h 44m2 stops
British Airways Logo
8:04 am - 7:25 pmSEA-SNN
27h 21m2 stops
$713British Airways
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Mon, Jan 12 - Mon, Jan 19
Multiple Airlines Logo
4:05 pm - 5:00 pmORK-SEA
32h 55m2 stops
Multiple Airlines Logo
2:35 pm - 11:25 pmSEA-ORK
24h 50m2 stops
$716Multiple Airlines
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Booking Insights

KAYAK's insights & trends for flights to Seattle

Get data-powered insights and trends for flights to Seattle to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly to Seattle?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights to Seattle, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights to Seattle is February, where tickets cost $613 on average for one-way flights. On the other hand, the most expensive months are July and August, where the average cost of tickets from Ireland is $937 and $897 respectively. For return trips, the best month to travel is February with an average price of $613.

What is a good deal for flights to Seattle?

If you’re looking for cheap airfare to Seattle, 25% of our users found tickets to Seattle for the following prices or less: From Dublin $708 one-way - $518 round-trip.

How far in advance should I book a flight to Seattle?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights to Seattle, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 56 days before departure.

Find deals

Good to know

Low seasonOctober
Cheapest flight$333
Best time to beat the crowds with an average 7% drop in price.
Most popular time to fly with an average 25% increase in price.
Flight from Dublin to Seattle

FAQs - booking Seattle flights

  • How far is Seattle/Tacoma Intl Airport from central Seattle?

    Central Seattle is 11 miles away from Seattle/Tacoma Intl Airport.

  • What is the name of Seattle’s airport?

    There is only 1 airport in Seattle, called Seattle/Tacoma Intl Airport (SEA). It can also be referred to as Seattle-Tacoma Intl, Seattle/Tacoma, or Seattle/Tacoma Intl.

  • How much is a flight to Seattle?

    On average, a flight to Seattle costs $794. The cheapest price found on KAYAK in the last 2 weeks cost $511 and departed from Dublin Airport.

  • What is the cheapest day to fly to Seattle?

    Based on KAYAK data, the cheapest day to fly to Seattle is Tuesday where tickets can be as cheap as $699. On the other hand, the most expensive day to fly is Thursday, where prices are $997 on average.

  • How does KAYAK find such low prices on flights to Seattle?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights to Seattle.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket to Seattle?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights to Seattle?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Seattle with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight to Seattle?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Seattle?

    The cheapest time of day to fly to Seattle is generally in the evening, when flights cost $736 on average. The most expensive time of day to fly to Seattle is generally in the morning, which is peak travel time and where the average cost of a ticket is $750.

Top tips for finding cheap flights to Seattle

  • Looking for cheap airfare to Seattle? 25% of our users found round-trip tickets to Seattle for the following prices or less: From Dublin $613
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Seattle flight deals.

Reviews of the top airline flying from Ireland to Seattle

 
See real verified KAYAK customer reviews for airlines flying to Seattle. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Ireland to Seattle. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with to Seattle? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.2
Aer LingusOverall score based on 1383 reviews
8.0Crew
7.1Comfort
6.9Entertainment
7.4Boarding
6.6Food
Airline reviews

Seats are small, but comfortable and more space around you, so for a normal person the seats are perfect. If you are a big and fat individual, I would not think the seats are comfortable. All else was good and normal. Lots of movies to watch.

10.0 ExcellentPAULINA, Nov 2025DUB - LAS
Read more Aer Lingus reviews

Seats are small, but comfortable and more space around you, so for a normal person the seats are perfect. If you are a big and fat individual, I would not think the seats are comfortable. All else was good and normal. Lots of movies to watch.

Customer service was excellent! The app was terrible, tried several times to check in without success! But the young lady that checked us in was absolutely terrific and helpful.

The same as I stated prior. We incurred extra costs that should be reimbursed, given we were not communicated with about schedule changes.

Experience was great overall. However, the connection time between my flights (1hr 15 mins) was too short. We had to get through security check and US immigration in that time, and I made it to the gate just as they were announcing it was about to close. Flights with such a short connection time should maybe not be offered for purchase, or an advance alert would be helpful. Other than that the in-flight experience was excellent, especially the food. Many thanks!

The seats needs to be comfortables, at least please add more padding to the seats.

Incredible service. Incredible entertainment. I felt like they just kept serving us something new avery hour. My wife and I both had a joyous flight.

They out me in the baby row so I was surrounded by toddlers, they also did not send my luggage and was not able to book my connecting flight

I was so grateful for the kindness of the crew. They made a long trip very pleasant. Food was delicious. Many movie options

My flight from Dublin was delayed two hours which ment that I missed my connecting flight to Phoenix. American Airlines provided a hotel room and rebooked my flight for 7:30 AM the next day. I didn't get to the room until 11 pm and I had to be at the airport the next day by 5 AM. The airlines did their best but the schedule was challenging for an 81 year old.

Dinner was fabulous. Would have enjoyed a wine with it. None offered... for sale??? Breakfast was disappointing but adequate amount of food.

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Lynnwood
Centralia
Fife
Westport
Lakewood
Mukilteo
Lacey
Poulsbo
Aberdeen
Edmonds
Woodinville
Shoreline
DuPont
Monroe
Castle Rock
Edgewood

Everything you need to know for your flight to Seattle

Information on the airport you'll fly into in Seattle

Seattle (SEA)