Find cheap flights to Seattle

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About Flights to Seattle

Summary info about Seattle flight prices, duration and airlines

Best One-Way Price


Best Return Price


Fastest flight time

9h 55m

Operated By

3 airlines
The best one-way flight price to Seattle from Ireland in the last 72 hours is €356 (Dublin to Seattle/Tacoma Intl).
The best return flight price to Seattle from Ireland in the last 72 hours is €347 (Dublin to Seattle/Tacoma Intl).
The fastest flight to Seattle from Ireland takes 9h 55m (Dublin to Seattle/Tacoma Intl).
There are 3 airlines operating flights to Seattle, including Aer Lingus, Icelandair and WestJet.

Seattle flights insights and trends

Explore insights for your Seattle flight to craft the best travel plan

What is the cheapest month to fly to Seattle?

If you’re not able to fly to Seattle in October, then September is your next best option. Flight prices from Ireland to Seattle during September average around €540.

See prices from:

What is the cheapest day to depart on your flight to Seattle?

Our data shows that Thursday is the least expensive day to fly to Seattle. Tickets to fly out on this day can be as low as €594. Flights from Ireland to Seattle on a Monday will generally be more expensive and average around €770. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Seattle?

Our data shows that the cheapest Ireland to Seattle flights are usually those with departure times in the afternoon. Our users have found flights to Seattle in the afternoon for as low as €611. Flights at midday are often more expensive, with an average ticket price of €792.

How long does it take to fly to Seattle?

On average, it takes 9h 55m to fly from Ireland to Seattle if you fly out of Dublin (the most popular airport in Ireland) and into Seattle/Tacoma Intl (the most popular airport in Seattle). If you’re flying out of Shannon and into Seattle/Tacoma Intl, then the flight time is around 16h 33m.

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

We recommend purchasing flights from Ireland to Seattle 60 days ahead of your departure date because this is when momondo users tend to see the best flight rates. On average, our users have found flights to Seattle for €632. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Ireland for as low as €578 on momondo.

Cheapest flights to Seattle airports

Find the cheapest flights to these Seattle airports from your nearest city or airport


Dublin (DUB) to Seattle (SEA)

Typically, flights to Seattle from Dublin are cheaper when flying from Dublin to Seattle/Tacoma Intl, which has an average price of €632

CHEAPEST MONTH TO FLY TO SEATTLE FROM DUBLINOctober19% cheaperFlying from Dublin to Seattle costs on average just €512 in October
MOST EXPENSIVE MONTH TO FLY TO SEATTLE FROM DUBLINAugust40% more expensiveIt costs about €883 for flights to Seattle from Dublin in August
MOST POPULAR MONTH TO FLY TO SEATTLE FROM DUBLINJuly229% more users visitedMore momondo users searched in flights to Seattle from Dublin in July than any other month

Frequently asked questions about flying to Seattle

Mount St. Helens is known in Seattle for its amazing views and rigorous terrain. Locals and tourists enjoy making their way up the mountains when temperatures are mild and there is less chance of precipitation. Hiking in the area is often enjoyed most when the weather begins warming up and the chance for rain is low. Considering this, it would be recommended to fly to Seattle during May to take advantage of the warmer weather and go for a hike.

Most momondo users would consider October to be the best times to fly to Seattle to see sights like Seattle Center. Typically, the weather in Seattle is under 70 degrees Fahrenheit (21°C) but still warm and the chance of rain is only moderate.

Seattle King County/Boeing Airport, Kenmore Air Harbor Airport, Seattle/Tacoma Intl Airport, Everett Paine Field Airport or Lopez Island Airport can be an alternative airport used for travel to Seattle.

Seattle flight deals found on momondo

Check out some of the best fares from airports in Ireland to Seattle found recently by users on momondo

Which airlines fly to Seattle?

Here you can see a selection of the most popular and cheapest airlines for flights to Seattle

Which airlines fly to Seattle?

Based on our data, the most popular airlines that fly to Seattle from Ireland are Aer Lingus, Icelandair, American Airlines and British Airways. There may also be other airline options depending on where in Ireland you’re flying from.

Air France Flights to Seattle

10 Air France flights head to Seattle on average each week. Most will be flying from Paris Charles de Gaulle to Seattle, the most popular route that Air France operates to Seattle. Prices vary based on when and where you fly from - the cheapest Air France flight to Seattle found in the past 3 days on momondo was €481, departing from Dublin. Air France is the most popular choice on momondo for this route and has been scored 7.5/10 by 305 of our users.

Icelandair Flights to Seattle

Icelandair flights to Seattle can start from as low as €488 (return, from Dublin, found in the last 72 hours). Over 8 flights that Icelandair operates to Seattle in a normal week, prices can vary significantly. The most popular Icelandair flight to Seattle is from Las Vegas Harry Reid Intl. Icelandair has been rated 7.4/10 by momondo users, in 100 reviews.

Popular routes to Seattle

Most frequently searched flights to Seattle along with the cheapest price and shortest flight duration
Dublin to Seattle Flights
Fastest flight time9h 55m
Cheapest price€347
Shannon to Seattle Flights
Fastest flight time16h 33m
Cheapest price€529
San Francisco to Seattle Flights
Fastest flight time2h 18m
Cheapest price€163
London to Seattle Flights
Fastest flight time13h 00m
Cheapest price€520
Cork to Seattle Flights
Fastest flight time16h 50m
Cheapest price€785

Start planning your trip to Seattle

Why use momondo?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Seattle.

Flights to Seattle with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

Once all potential Seattle flight options are in front of you momondo lets you sort and filter flights based on preferences such as airline, price and flight times, amongst many other options.

If you are simply researching potential flights to Seattle, momondo offers a useful price alert feature which will track prices for flights to Seattle and alert you when they change.

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