SEA

€315 Find Cheap Flights 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 7/6. 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 return fare
€512
Typical prices: €766-€594
Aer Lingus
Fri 5/6Sun 21/6
DUB - SEA • Direct
Cheapest one-way flight
€315
Typical prices: €488-€665
Multiple Airlines
Sun 7/6
DUB - SEA • 3 stops
When to book
in advance
Our data shows that travellers who book at least 4 weeks in advance save around 28% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 16% price drop
Most popular
Good to know
Good to know
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Good to know
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Start a new search
KAYAK searches hundreds 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 to Seattle

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights 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 return flight deals to Seattle

Fri, 5 Jun - Sun, 21 Jun
Aer Lingus Logo
15:25 - 17:10
DUB
-
SEA
9h 45mdirect
Aer Lingus Logo
19:10 - 12:15
SEA
-
DUB
9h 05mdirect
€512Aer Lingus
Thu, 4 Jun - Mon, 8 Jun
British Airways Logo
20:20 - 11:35
DUB
-
SEA
23h 15m
1 stop
British Airways Logo
13:30 - 18:40
SEA
-
DUB
21h 10m
1 stop
€513British Airways
Thu, 4 Jun - Mon, 8 Jun
British Airways Logo
20:20 - 11:35
DUB
-
SEA
23h 15m
1 stop
British Airways Logo
20:20 - 09:40
SEA
-
DUB
29h 20m
1 stop
€514British Airways
Fri, 5 Jun - Sun, 21 Jun
Multiple Airlines Logo
13:45 - 22:58
DUB
-
SEA
17h 13m
1 stop
Multiple Airlines Logo
20:20 - 12:00
SEA
-
DUB
31h 40m
1 stop
€523Multiple Airlines
Fri, 19 Jun - Tue, 23 Jun
Finnair Logo
09:30 - 00:41
DUB
-
SEA
23h 11m
1 stop
Finnair Logo
17:40 - 17:15
SEA
-
DUB
15h 35m
1 stop
€527Finnair
Sat, 26 Sep - Sun, 4 Oct
Scandinavian Airlines Logo
20:00 - 13:45
DUB
-
SEA
25h 45m
2 stops
Scandinavian Airlines Logo
15:55 - 18:20
SEA
-
DUB
18h 25m
1 stop
€528Scandinavian Airlines
Wed, 16 Sep - Wed, 7 Oct
JetBlue Logo
11:30 - 20:42
DUB
-
SEA
17h 12m
1 stop
JetBlue Logo
23:55 - 08:20
SEA
-
DUB
24h 25m
1 stop
€530JetBlue
Sat, 26 Sep - Sun, 4 Oct
Scandinavian Airlines Logo
20:00 - 13:45
DUB
-
SEA
25h 45m
2 stops
Scandinavian Airlines Logo
15:55 - 18:20
SEA
-
DUB
18h 25m
1 stop
€533Scandinavian Airlines
Fri, 19 Jun - Tue, 23 Jun
Delta Logo
05:55 - 19:05
DUB
-
SEA
21h 10m
2 stops
Delta Logo
18:50 - 18:25
SEA
-
DUB
15h 35m
1 stop
€535Delta
Sat, 4 Jul - Sat, 11 Jul
Multiple Airlines Logo
12:00 - 11:45
SNN
-
SEA
31h 45m
3 stops
Multiple Airlines Logo
05:45 - 11:20
SEA
-
SNN
21h 35m
3 stops
€1,590Multiple Airlines
Booking Insights

KAYAK's insights & trends for flights to Seattle

Get data-powered insights and trends into 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?

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 Sunday where round-trip tickets can be as cheap as €701. On the other hand, the most expensive day to fly is Tuesday, where round-trip prices are €824 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 April, where tickets cost €520 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 €885 and €773 respectively. For one-way flights, the best month to travel is April with an average price of €520.

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 €737 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 €737.

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.

Good to know – Book Cheap Seattle Plane Tickets

Low seasonJanuary
Cheapest flight€315
Best time to beat the crowds (1% less expensive on average)
Most popular time to fly and prices are also 13% lower on average.
Flight from Dublin to Seattle

When to book flights to Seattle

Are your dates flexible? Find out the best times to travel to Seattle based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. The information is for flights to Seattle based on your location. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs - booking Seattle flights

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

    Seattle/Tacoma Intl Airport is 18 km from the centre of Seattle.

  • What is the name of Seattle’s airport?

    When flying to Seattle, you'll arrive at Seattle/Tacoma Intl Airport (SEA). The airport is also known as Seattle-Tacoma Intl, Seattle/Tacoma, or Seattle/Tacoma Intl.

  • How much is a flight to Seattle?

    On average, a flight to Seattle costs €655. The cheapest price found on KAYAK in the last 2 weeks cost €603 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 travellers 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 return tickets to Seattle for the following prices or less: From Dublin €603
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Seattle flight deals.

Reviews of the top airlines flying 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.
7.3
Aer LingusOverall score based on 1580 reviews
7.4Boarding
7.0Entertainment
6.7Food
7.2Comfort
8.1Crew
Airline reviews

I sat in the first row behind first class. There was plenty of legroom. The entertainment was great. I saw two excellent movies and one episode of a sitcom. Also enjoyed the flight tracker.

10.0 ExcellentAnthon, Apr 2026
DUB - BOS
Read more Aer Lingus reviews

I sat in the first row behind first class. There was plenty of legroom. The entertainment was great. I saw two excellent movies and one episode of a sitcom. Also enjoyed the flight tracker.

OK overall. Flight was delayed Crew on flight was good

On time, only a little turbulence, very competent and caring attendants. Clear information.

Late late late. Delayed and arrived an hour late for a 1 hour 45 minute connection. Every time. Poor record for this company. I try to fly any other carrier first.

The flights are literally always delayed arriving, boarding and taking off so they are always late for the connection. I planned ahead so I was okay but many others aren't. The food was terrible. The staff was very pleasant. I appreciate boarding back to front.

The crew was friendly. The plane was comfortable. In-flight wifi didn't work well at all. The ride was quite turbulent but understandable given the weather.

My issue is with the SkyWest terminal. The flight was not listed on the main airport flight screen list, and I had to do a Google search to locate the terminal and gate. We had to ask several airport employees where to locate the phantom gate. The airport did not provide adequate signage and was confusing. When we arrived, there was one vendor providing services that quickly closed, leaving zero options for food and drink while we waited hours for our delayed flight. The crew that assisted with check-in and boarding was VERY friendly.

Economy seats a bit small but other than that it was all good.

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.

At least one soda free, felt like I was nickeled to death.

Friendly flight crew. Airplane (757) configured as a domestic flight (no lie-flat seats) & no advanced meal selection.

When you consider the price I ended up paying for everything. This was not a good deal! I had no idea that this airline had changed to a bargain basement no frills airline. So, it was disappointing to have to pay for every little thing. The only thing included was water and coffee. You have to pay for everything else! So I just felt nickel and dime.

The Icelandair crew was so kind!!! Thank you for making my first trip to Paris a great one!

I am not going to fillo this out for each leg of my trip. My first review holds for the experience

The movie choices were poor. The worst problem is the treatment of passengers durinng pre-boarding. In one case the primes were checked in and sent down the boarding tunnek only to stand waiting there while the plane is cleaned. In the second case the bus was loaded, the doors closed and just stood there unmoving like sardeines in a tin for over TEN minutes. In both cases it was rough on us old guys who find standing for long periods trying.. In other words, Donnt just stack us up and forget us.

The most uncomfortable seat i’ve ever had on a flight

Waiting area on top of stairs before Boarding the bus wasn’t great. Took a long time to load the bus to gate.

The real reason why the flying experience with Icelandair ---was mediocre was because of not being able to enter DC airspace yesterday evening. This obviously was out of your control and do realize this is a safety issue. I did notice---that everything was being done to get us to Washington Dulles and we did arrive at Dulles SAFELY with just a 4 hour delay. Thank you!

Iceland Air severely damaged a checked bag. Additionally, the gate agent caused issues for many passengers who had standard-sized onboard bags that would have passed inspection by any other airline.

Travelling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
SeaTac
Westport
Olympia
Redmond
Edmonds
Mukilteo
Tacoma
Snoqualmie
Ocean Shores
Leavenworth
DuPont
Lynnwood
Kent
Federal Way
Bothell

Everything you need to know for your flight to Seattle

Information on the airport you'll fly into in Seattle