Find flights
Deals
Insights
When to book
FAQs & Tips

SEA - SNN

€245 Find cheap flights from Seattle to Shannon

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Shannon departing on 21/11. 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
0 bags

Search hundreds of travel sites at once for deals on flights to Shannon

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Shannon, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Shannon, as well as popular online travel agencies
In the last 7 days, travellers have searched 46,479,581 times on KAYAK, and here's why:

Save 21% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Free to useThere are no hidden charges or fees.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Cheap flight deals from Seattle to Shannon (SEA-SNN)

 
These are the cheapest deals for flights from Seattle to Shannon currently on KAYAK along with options from the most popular airlines KAYAK users selected for this route. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent return flight deals from Seattle to Shannon

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from Seattle to Shannon.

Recent one-way flight deals from Seattle to Shannon

Only flying one-way? Below are some of the best one-way flight deals from Seattle to Shannon found on KAYAK recently.

Recent last-minute flight deals from Seattle to Shannon

Leaving soon but still want a bargain? Check out these latest deals for last minute flights from Seattle to Shannon.

Recent direct flight deals from Seattle to Shannon

The latest deals for direct flights from Seattle to Shannon so you can sit back and relax without the need for a layover.

Cheap bus & train deals from Seattle to Shannon

Find recent round-trip train or bus tickets from Seattle to Shannon.

All round-trip flight deals to Shannon

The cheapest plane tickets to Shannon found on KAYAK recently.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
13:35 - 16:45SEA-SNN
19h 10m2 stops
07:45 - 22:38SNN-SEA
22h 53m2 stops
€602American Airlines
Find Deal
Mon, 2 Dec - Mon, 9 Dec
10:35 - 19:25SEA-SNN
24h 50m2 stops
07:45 - 22:00SNN-SEA
22h 15m3 stops
€639
Find Deal
Mon, 2 Dec - Mon, 9 Dec
05:45 - 11:30SEA-SNN
21h 45m3 stops
07:45 - 22:00SNN-SEA
22h 15m3 stops
€643Air Canada
Find Deal
Mon, 2 Dec - Mon, 9 Dec
18:50 - 19:25SEA-SNN
16h 35m1 stop
20:05 - 16:55SNN-SEA
28h 50m1 stop
€647Aer Lingus
Find Deal
Mon, 2 Dec - Mon, 9 Dec
22:55 - 19:25SEA-SNN
36h 30m2 stops
20:05 - 16:55SNN-SEA
28h 50m1 stop
€676British Airways
Find Deal
Mon, 2 Dec - Mon, 9 Dec
22:55 - 19:25SEA-SNN
36h 30m2 stops
20:05 - 16:55SNN-SEA
28h 50m1 stop
€681British Airways
Find Deal
Mon, 2 Dec - Mon, 9 Dec
05:45 - 15:45SEA-SNN
26h 00m2 stops
07:45 - 22:07SNN-SEA
22h 22m2 stops
€728
Find Deal
Fri, 22 Nov - Wed, 27 Nov
10:35 - 16:45SEA-SNN
22h 10m3 stops
07:45 - 22:07SNN-SEA
22h 22m3 stops
€744Air Canada
Find Deal
Thu, 21 Nov - Wed, 27 Nov
07:00 - 06:15SEA-SNN
15h 15m1 stop
20:05 - 18:15SNN-SEA
30h 10m2 stops
€778
Find Deal
Sun, 15 Dec - Sun, 22 Dec
19:15 - 11:30SEA-SNN
56h 15m2 stops
17:25 - 09:50SNN-SEA
48h 25m2 stops
€789Air Canada
Find Deal
Mon, 23 Dec - Sat, 11 Jan
11:44 - 09:20SEA-SNN
37h 36m2 stops
€245
Find Deal
Thu, 21 Nov
17:28 - 09:55SEA-SNN
56h 27m3 stops
€341
Find Deal
Fri, 22 Nov
15:15 - 19:30SEA-SNN
20h 15m2 stops
€376
Find Deal
Fri, 22 Nov
07:20 - 19:25SEA-SNN
28h 05m3 stops
€452
Find Deal
Thu, 21 Nov
18:50 - 16:45SEA-SNN
13h 55m1 stop
€636
Find Deal
Thu, 21 Nov
00:15 - 16:45SEA-SNN
32h 30m2 stops
€1,802Aer Lingus
Find Deal
Wed, 20 Nov

Flights from Seattle to Shannon - Travel Insights & Trends

Get data-powered insights and trends into flights from Seattle to Shannon to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Seattle to Shannon?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Seattle to Shannon, 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 from Seattle to Shannon is January, where tickets cost €588 on average. On the other hand, the most expensive months are December and February, where the average cost of tickets is €1,066 and €1,023 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Seattle to Shannon, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Seattle to Shannon, you should book around 1 day before departure. For the absolute cheapest price, our data suggests you should book 179 days before departure.

Good to know

Low season

February

High season

September

Cheapest flight

€245
Best time to beat the crowds but there is an average 22% increase in price.
Most popular time to fly and prices are also 20% lower on average.
Flight from Seattle to Shannon

When to book flights from Seattle to Shannon

Are your dates flexible? Find out the best times to travel from Seattle to Shannon 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. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Seattle to Shannon

  • What is the cheapest flight from Seattle to Shannon?

    In the last 3 days, the lowest price for a flight from Seattle to Shannon was €266 for a one-way ticket and €654 for a return.

  • Which airports will I be using when flying from Seattle to Shannon?

    Seattle and Shannon are both served by 1 main airport. You will leave Seattle from Seattle/Tacoma Intl and will be arriving at Shannon.

  • Which aircraft models fly most regularly from Seattle to Shannon?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Seattle to Shannon?

    oneworld, and Star Alliance are the airline alliances operating flights between Seattle and Shannon, with oneworld being the most commonly used for this route.

  • How does KAYAK find such low prices on flights from Seattle to Shannon?

    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 from Seattle to Shannon.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Seattle to Shannon?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Shannon from 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 from Seattle to Shannon?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Shannon with an airline and back to Seattle with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seattle to Shannon?

    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 Shannon from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Book cheap flights from Seattle to Shannon

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Seattle to Shannon found on KAYAK in the last 72 hours.
21/11Thu
2 stops
37h 36mSEA-SNN
€245
22/11Fri
3 stops
56h 27mSEA-SNN
€341
22/11Fri
2 stops
20h 15mSEA-SNN
€376
21/11Thu
3 stops
28h 05mSEA-SNN
€452
21/11Thu
1 stop
13h 55mSEA-SNN
€636
20/11Wed
2 stopsAer Lingus
32h 30mSEA-SNN
€1,802

Search by stops

Search by airline

Search by price

Everything you need to know for your flight from Seattle to Shannon

Information on your arrival and departure airports