$349 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 5/5. 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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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

mar., abr. 21 - mar., abr. 28
Icelandair Logo
2:15 pm - 8:40 pm
DUB
-
SEA
14h 25m
1 stop
Icelandair Logo
3:40 pm - 11:05 am
SEA
-
DUB
11h 25m
1 stop
$511Icelandair
mié., may. 6 - mié., may. 13
Icelandair Logo
12:15 pm - 8:40 pm
DUB
-
SEA
16h 25m
1 stop
Icelandair Logo
7:00 pm - 11:05 am
SEA
-
DUB
32h 05m
1 stop
$520Icelandair
mar., may. 5 - sáb., may. 30
Icelandair Logo
2:15 pm - 5:55 pm
DUB
-
SEA
11h 40m
1 stop
Icelandair Logo
3:40 pm - 11:05 am
SEA
-
DUB
11h 25m
1 stop
$524Icelandair
mié., may. 6 - mié., may. 13
Icelandair Logo
12:15 pm - 8:40 pm
DUB
-
SEA
16h 25m
1 stop
Icelandair Logo
7:00 pm - 11:05 am
SEA
-
DUB
32h 05m
1 stop
$525Icelandair
vie., may. 22 - sáb., may. 30
Scandinavian Airlines Logo
12:40 pm - 1:45 pm
DUB
-
SEA
33h 05m
1 stop
Scandinavian Airlines Logo
3:55 pm - 6:20 pm
SEA
-
DUB
18h 25m
1 stop
$536Scandinavian Airlines
jue., may. 21 - sáb., may. 30
Multiple Airlines Logo
5:10 pm - 4:30 pm
ORK
-
SEA
31h 20m
1 stop
Multiple Airlines Logo
1:30 pm - 2:25 pm
SEA
-
ORK
16h 55m
1 stop
$618Multiple Airlines
jue., may. 21 - vie., may. 29
Delta Logo
6:15 am - 4:30 pm
ORK
-
SEA
18h 15m
1 stop
Delta Logo
7:30 am - 10:20 am
SEA
-
ORK
18h 50m
2 stops
$623Delta
vie., may. 22 - sáb., may. 30
Delta Logo
6:15 am - 4:37 pm
ORK
-
SEA
18h 22m
2 stops
Delta Logo
1:30 pm - 2:25 pm
SEA
-
ORK
16h 55m
1 stop
$624Delta
vie., may. 8 - vie., may. 15
Aer Lingus Logo
9:15 pm - 5:10 pm
SNN
-
SEA
27h 55m
2 stops
Aer Lingus Logo
7:10 pm - 11:20 am
SEA
-
SNN
32h 10m
2 stops
$968Aer Lingus
dom., may. 10 - dom., may. 17
Aer Lingus Logo
9:15 pm - 11:35 am
SNN
-
SEA
22h 20m
1 stop
Aer Lingus Logo
7:10 pm - 8:35 pm
SEA
-
SNN
17h 25m
2 stops
$988Aer 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 flight to Seattle?

These are the best round-trip prices found by users searching on KAYAK in the last 72 hours.

In the last 3 days, the cheapest flight deal to Seattle was found on the route from Dublin, at $511 return. The most popular connection is from Los Angeles to Seattle and KAYAK users have found round-trip deals for as low as $87 in the last 3 days.

What is the cheapest day to fly to Seattle?

The average price of all round-trip flights to Seattle clicked on KAYAK for each day over the last 12 months.

Based on KAYAK data, the cheapest day to fly to Seattle is Friday where round-trip tickets can be as cheap as $670. 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?

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 $619 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 $937 and $897 respectively. For one-way flights, the best month to travel is February with an average price of $619.

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

The average price for all round-trip flights to Seattle depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to Seattle is generally in the evening, when round-trip flights cost $720 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 $720.

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 $977 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 4 weeks before departure, which saves you about 28% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 7 weeks before departure.

Find deals

Good to know

Low seasonJanuary
Cheapest flight$349
Best time to beat the crowds with an average 1% drop in price.
Most popular time to fly and prices are also 10% lower on average.
Flight from Dublin to Seattle

FAQs - booking Seattle flights

  • What is the cheapest flight to Seattle?

    In the last 3 days, the cheapest flight deal to Seattle was found on the route from Dublin, at $511 return. The most popular connection is from Los Angeles to Seattle and KAYAK users have found round-trip deals for as low as $87 in the last 3 days.

  • 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 $966. The cheapest price found on KAYAK in the last 2 weeks cost $552 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.

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 $789
  • 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 1491 reviews
6.6Food
7.0Entertainment
7.2Comfort
8.1Crew
7.4Boarding
Airline reviews

No complimentary drinks or snacks offered on a 2 hour flight was disappointing but everything else went well

8.0 ExcellentBrittany, Mar 2026
DUB - LAX
Read more Aer Lingus reviews

No complimentary drinks or snacks offered on a 2 hour flight was disappointing but everything else went well

All aspects were excellent - it helped that the flight was only 2/3 full and I had no one sitting in my row. The Pre-check (US Passport Control and Customs) in Dublin made everything so easy when we arrived in Chicago.

I love the direct flights. It saves a lot of hassle and allows immigration and customs in Ireland, making arrival much easier.

Great. Has a problem with DOB. Fixed 4 us. Led to a 5 hour earlier flight to London!

One of the best flight experiences I've have had in along time. Would fly with them again.

So, the trip from Dublin to LA did not really happen because the flight took off before we could finish the transfer.

Very nice experience. Flight had good entertainment system and good food options. Customer service was very friendly and nice as well.

Like - the crew were nice Dislike - sitting on the tarmac for long periods after boarding and landing.

I was not admitted to the flight!!! i need a refund for this.

It’s my new favourite airline! Everything was smooth and relaxed!

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Lynnwood
Centralia
Fife
Lakewood
Westport
Mukilteo
Lacey
Aberdeen
Edmonds
Poulsbo
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)