Find cheap flights to Seattle

1 adult
0 bags
Wed 10/8
Wed 17/8

Deals available from 900+ travel sites.

About Flights to Seattle

Summary info about Seattle flight prices, duration and airlines

Best One-Way Price


Best Return Price


Fastest flight time

23h 13m

Operated By

2 airlines
The best one-way flight price to Seattle from Ireland in the last 72 hours is €360 (Dublin to Seattle/Tacoma Intl).
The best return flight price to Seattle from Ireland in the last 72 hours is €355 (Shannon to Seattle/Tacoma Intl).
The fastest flight to Seattle from Ireland takes 23h 13m (Dublin to Seattle/Tacoma Intl).
There are 2 airlines operating flights to Seattle, including Aer Lingus and Icelandair.

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 €700

CHEAPEST MONTH TO FLY TO SEATTLE FROM DUBLINOctober15% cheaperFlying from Dublin to Seattle costs on average just €594 in October
MOST EXPENSIVE MONTH TO FLY TO SEATTLE FROM DUBLINJuly31% more expensiveIt costs about €920 for flights to Seattle from Dublin in July
MOST POPULAR MONTH TO FLY TO SEATTLE FROM DUBLINJuly208% more users visitedMore momondo users searched in flights to Seattle from Dublin in July than any other month

When is the best time 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 €597.

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 €700. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Ireland for as low as €355 on momondo.

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 €677. Flights from Ireland to Seattle on a Sunday will generally be more expensive and average around €863. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

Our data shows that the cheapest Ireland to Seattle flights are usually those with departure times in the morning. Our users have found flights to Seattle in the morning for as low as €729. Flights in the evening are often more expensive, with an average ticket price of €985.

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
Multiple Airlines
23 Jan
28h 52m
1 stop
SEA13:32Seattle/Tacoma Intl
30 Jan
SEA02:25Seattle/Tacoma Intl
14h 55m
1 stop
Aer Lingus
20 Oct
9h 35m
SEA21:40Seattle/Tacoma Intl
28 Oct
SEA15:25Seattle/Tacoma Intl
9h 20m
Multiple Airlines
3 Nov
16h 39m
1 stop
SEA00:09Seattle/Tacoma Intl
17 Nov
SEA10:05Seattle/Tacoma Intl
15h 25m
1 stop
Multiple Airlines
3 Sep
25h 38m
1 stop
SEA12:53Seattle/Tacoma Intl
27 Oct
SEA11:05Seattle/Tacoma Intl
15h 05m
1 stop
Aer Lingus
3 Nov
9h 55m
SEA22:25Seattle/Tacoma Intl
17 Nov
SEA15:10Seattle/Tacoma Intl
9h 10m
Multiple Airlines
12 Jan
17h 47m
1 stop
SEA01:17Seattle/Tacoma Intl
19 Jan
SEA02:30Seattle/Tacoma Intl
20h 10m
1 stop

Find the cheapest one-way flights to Seattle

If you're looking for one-way flights from Ireland to Seattle, view some of our deals below.
Multiple Airlines
20 Sep
37h 15m
3 stops
SEA03:10Seattle/Tacoma Intl
Multiple Airlines
18 Oct
37h 42m
2 stops
SEA16:52Seattle/Tacoma Intl
Multiple Airlines
27 Sep
32h 55m
3 stops
SEA03:10Seattle/Tacoma Intl

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, British Airways and Air Canada. There may also be other airline options depending on where in Ireland you’re flying from.

Aer Lingus Flights to Seattle

13 Aer Lingus flights head to Seattle on average each week. Most will be flying from London Heathrow to Seattle, the most popular route that Aer Lingus operates to Seattle. Prices vary based on when and where you fly from - the cheapest Aer Lingus flight to Seattle found in the past 3 days on momondo was €483, departing from Dublin. Aer Lingus is the most popular choice on momondo for this route and has been scored 8.1/10 by 81 of our users.

KLM Flights to Seattle

KLM flights to Seattle can start from as low as €749 (return, from Cork, found in the last 72 hours). Over 25 flights that KLM operates to Seattle in a normal week, prices can vary significantly. The most popular KLM flight to Seattle is from San Francisco. KLM has been rated 7.5/10 by momondo users, in 152 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 35m
Cheapest price€462
San Francisco to Seattle Flights
Fastest flight time2h 10m
Cheapest price€227
Shannon to Seattle Flights
Fastest flight time19h 58m
Cheapest price€355
London to Seattle Flights
Fastest flight time28h 05m
Cheapest price€1,181
Cork to Seattle Flights
Fastest flight time30h 55m
Cheapest price€653

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.

Other cabin classes for Seattle flights

Explore alternative premium cabin options for your flight to Seattle

Here's why travellers choose to use momondo
Flexible Travel
momondo understands the need for flexibility and we have a filter specifically for flights with no change fees.
Expert Insights
Data driven insights designed to help you find a great flight deal. From the cheapest time to depart to how far in advance to book.
Price Alerts
Track the price of your preferred flight route and be notified when it changes.