$436 Find Cheap Flights from Ireland to Seattle - Compare and Save

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Cheap Flights from Ireland to Seattle

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Ireland to Seattle

Thu, Nov 12 - Thu, Nov 26
Icelandair Logo
11:30 am - 5:00 pmDUB  Dublin-SEA Seattle/Tacoma Intl
13h 30m1 stop Reykjavik Keflavik Intl
Icelandair Logo
2:35 pm - 10:15 amSEA  Seattle/Tacoma Intl-DUB Dublin
11h 40m1 stop Reykjavik Keflavik Intl
$588Icelandair
Thu, Nov 12 - Thu, Nov 26
Icelandair Logo
11:30 am - 5:00 pmDUB  Dublin-SEA Seattle/Tacoma Intl
13h 30m1 stop Reykjavik Keflavik Intl
Icelandair Logo
2:35 pm - 10:15 amSEA  Seattle/Tacoma Intl-DUB Dublin
11h 40m1 stop Reykjavik Keflavik Intl
$589Icelandair
Thu, Nov 12 - Thu, Nov 26
Icelandair Logo
11:30 am - 5:00 pmDUB  Dublin-SEA Seattle/Tacoma Intl
13h 30m1 stop Reykjavik Keflavik Intl
Icelandair Logo
2:35 pm - 10:15 amSEA  Seattle/Tacoma Intl-DUB Dublin
11h 40m1 stop Reykjavik Keflavik Intl
$592Icelandair
Thu, Nov 12 - Thu, Nov 26
Icelandair Logo
11:30 am - 5:00 pmDUB  Dublin-SEA Seattle/Tacoma Intl
13h 30m1 stop Reykjavik Keflavik Intl
Icelandair Logo
2:35 pm - 10:15 amSEA  Seattle/Tacoma Intl-DUB Dublin
11h 40m1 stop Reykjavik Keflavik Intl
$596Icelandair
Thu, Nov 12 - Thu, Nov 26
Icelandair Logo
11:30 am - 5:00 pmDUB  Dublin-SEA Seattle/Tacoma Intl
13h 30m1 stop Reykjavik Keflavik Intl
Icelandair Logo
2:35 pm - 10:15 amSEA  Seattle/Tacoma Intl-DUB Dublin
11h 40m1 stop Reykjavik Keflavik Intl
$599Icelandair
Sat, Nov 21 - Sat, Nov 28
Icelandair Logo
11:30 am - 5:00 pmDUB  Dublin-SEA Seattle/Tacoma Intl
13h 30m1 stop Reykjavik Keflavik Intl
Icelandair Logo
2:35 pm - 10:15 amSEA  Seattle/Tacoma Intl-DUB Dublin
11h 40m1 stop Reykjavik Keflavik Intl
$600Icelandair
Thu, Nov 12 - Thu, Nov 26
Icelandair Logo
11:30 am - 5:00 pmDUB  Dublin-SEA Seattle/Tacoma Intl
13h 30m1 stop Reykjavik Keflavik Intl
Icelandair Logo
2:35 pm - 10:15 amSEA  Seattle/Tacoma Intl-DUB Dublin
11h 40m1 stop Reykjavik Keflavik Intl
$601Icelandair
Wed, Dec 9 - Fri, Jan 8
Icelandair Logo
11:30 am - 5:00 pmDUB  Dublin-SEA Seattle/Tacoma Intl
13h 30m1 stop Reykjavik Keflavik Intl
Icelandair Logo
2:35 pm - 10:15 amSEA  Seattle/Tacoma Intl-DUB Dublin
11h 40m1 stop Reykjavik Keflavik Intl
$606Icelandair
Thu, Dec 10 - Thu, Dec 17
Aer Lingus Logo
11:30 am - 12:47 amDUB  Dublin-SEA Seattle/Tacoma Intl
21h 17m1 stop Chicago O'Hare Intl
Aer Lingus Logo
6:29 am - 5:15 amSEA  Seattle/Tacoma Intl-DUB Dublin
14h 46m1 stop Chicago O'Hare Intl
$867Aer Lingus
Sun, Dec 20 - Tue, Jan 5
Aer Lingus Logo
11:30 am - 11:42 pmDUB  Dublin-SEA Seattle/Tacoma Intl
20h 12m1 stop Chicago O'Hare Intl
Aer Lingus Logo
6:29 am - 10:25 amSEA  Seattle/Tacoma Intl-DUB Dublin
19h 56m1 stop Chicago O'Hare Intl
$878Aer Lingus
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 day to fly to Seattle?

Based on KAYAK data, the cheapest day to fly to Seattle is Friday where round-trip tickets can be as cheap as $615. On the other hand, the most expensive day to fly is Sunday, where round-trip prices are $1,226 on average.

What is the cheapest month to fly to Seattle?

The cheapest month for flights to Seattle is April, where tickets cost $603 on average for return flights. On the other hand, the most expensive months are July and August, where the average cost of tickets from Ireland is $1,041 and $1,012 respectively. For one-way flights, the best month to travel is November with an average price of $537.

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 round-trip flights cost $743 on average. The most expensive time of day to fly to Seattle is generally in the evening, which is peak travel time and where the average cost of a ticket is $743.

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

To get a below average price, you should book around 2 weeks before departure, which saves you about 31% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 10 weeks before departure.

Good to know

Low season

January

Cheapest flight

$436
Best time to beat the crowds with an average 5% drop in price.
Most popular time to fly and prices are also 19% lower on average.
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 $596. The cheapest price found on KAYAK in the last 2 weeks cost $511 and departed from Dublin Airport.

  • 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.

  • How many direct flights to Seattle are there each week?

    Each week there are around 15,116 direct flights from within Ireland to Seattle. The most common day for departures is Sunday, with 18% of flights taking off on this day.

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 $554

  • 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

 
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.
7.3
Aer LingusOverall score based on 1868 reviews
7.5Boarding
7.2Comfort
6.7Food
8.1Crew
7.1Entertainment
Airline reviews

The staff on the flight were utterly brilliant; there was a young man who was particularly exceptional. Boarding was quick and seamless, and service was great! Seats were fab, as was the entertainment and its ease of access

10.0 ExcellentJessica, Oct 2026
Read more Aer Lingus reviews

The staff on the flight were utterly brilliant; there was a young man who was particularly exceptional. Boarding was quick and seamless, and service was great! Seats were fab, as was the entertainment and its ease of access

i’m The staff on my flight were amazing as always, beautiful professional staff, they do amazing job. the food ? room for improvement

The agents at the boarding desk were not very helpful, however the hostesses on board the flight were great, the food was ok, and there were lots for choices for entertainment. I was stuck in an middle row seat which was a pain on a full flight, but otherwise the flight was great.

The man in front of me reclined the entire flight, including during meals, which was aggravating. My screen had issues with brightness and kept flickering in and out.

Everything was smooth and the meal was delicious. I really appreciated that Aer Lingus still offers complimentary beverages, food, luggage and headphones. It was nice that the main meal also featured some items typical to Ireland including the wheaten bread and Kerrygold butter. I generally found the flight a quite relaxing and enjoyable experience.

I was advertised a free seat selection for a "Smart" fare through BusinessClass.com. I was never able to select a seat. I thus paid extra for a bill of goods I was never provided. would love to speak with a representative of Kayak

One of the best flights I've been on in a while. Very genuinely friendly staff. Courteous, kind, respectful. On a past flight (not Aer Lingus) I remember being woken up rudely to put my seat forward. Like a child being berated for something. Oddly jarring experience when someone could just tap you gently on the shoulder and gesture kindly. But I noticed the Aer Lingus staff were incredibly patient with everyone on the plane. It's the holiday season and I noticed a lot more elderly customers on the plane than I typically see flying, and the staff went above and beyond with helping accommodate people. Service throughout the flight was flawless. They came through offering water, and picking up garbage at perfect intervals. Seemed like this flight, everyone was on point. And the flight landed early on top of that

Dear Aer Lingus Customer Care, I am writing to formally raise a complaint regarding my recent experience on Aer Lingus flight EI53 from Dublin to Seattle on 22/08/2025. Both my wife and I were seated in 15D, 15E directly under a faulty air conditioning unit. Even though the unit was switched off, cold air continued seeping through the sides and blew directly onto us for the entire duration of the flight (over 9 hours). We reported the issue to the cabin crew, but the only attempted solution was placing a piece of food-packaging sticker over the vent. Unsurprisingly, this had no effect. When we pressed further, the crew told us: “It is hard to fix it because we don’t have an engineer on board.” As a result, my wife and I remained exposed to constant cold airflow for the whole flight, and both of us became unwell afterwards, experiencing chills, sore throat and fever at the end of the flight. This has caused significant distress, disrupted our work plans. This experience highlights both a serious maintenance issue and a lack of adequate care for passengers. We therefore request: A full investigation into the defective AC system on this aircraft. An explanation of why no effective remedy (such as reseating us) was provided. Compensation for the illness and disruption caused to both myself and my wife. We ask for a full written response within 28 days. Should this matter not be satisfactorily resolved, we are prepared to escalate the complaint to the Irish Aviation Authority and Commission for Aviation Regulation and other relevant authorities. Thank you for your urgent attention to this matter. Sincerely, Temuujin Tuvshingal Myagmarsuren Ganbold

Nicest staff I’ve experienced on a plane! Good food, great entertainment, and they gave out little blankets that my kids loved. All in all, great experience.

Crew was fantastic got lovely food and plenty of water. Entertainment was good. Never had to ask for anything. Left on time and got to Seattle early. Luggage did not take long either.

Traveling to a place near Seattle?

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Lynnwood
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