SEA - SNN

€512 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 20/2. 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.
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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 47,107,125 times on KAYAK, and here's why:

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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
20:20 - 16:45SEA-SNN
36h 25m2 stops
17:25 - 23:59SNN-SEA
38h 34m2 stops
€818British Airways
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Sat, 4 Jan - Sat, 11 Jan
19:15 - 11:30SEA-SNN
56h 15m2 stops
17:25 - 14:30SNN-SEA
53h 05m2 stops
€832Air Canada
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Mon, 23 Dec - Sat, 11 Jan
13:45 - 19:25SEA-SNN
21h 40m1 stop
07:45 - 21:18SNN-SEA
21h 33m2 stops
€950American Airlines
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Sat, 4 Jan - Sat, 11 Jan
15:43 - 19:25SEA-SNN
19h 42m2 stops
20:05 - 16:55SNN-SEA
28h 50m1 stop
€971British Airways
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Sun, 5 Jan - Sun, 12 Jan
13:45 - 11:30SEA-SNN
13h 45m1 stop
07:45 - 16:55SNN-SEA
17h 10m1 stop
€973
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Sat, 4 Jan - Sat, 11 Jan
13:45 - 11:30SEA-SNN
13h 45m1 stop
07:45 - 22:43SNN-SEA
22h 58m2 stops
€988
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Sat, 4 Jan - Sat, 11 Jan
15:43 - 19:25SEA-SNN
19h 42m2 stops
20:05 - 20:04SNN-SEA
31h 59m2 stops
€989British Airways
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Sun, 5 Jan - Sun, 12 Jan
20:00 - 19:25SEA-SNN
15h 25m2 stops
17:25 - 18:15SNN-SEA
32h 50m2 stops
€1,149Aer Lingus
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Mon, 16 Dec - Sat, 21 Dec
20:00 - 19:25SEA-SNN
15h 25m2 stops
17:25 - 18:15SNN-SEA
32h 50m2 stops
€1,156Aer Lingus
Find Deal
Mon, 16 Dec - Sat, 21 Dec
13:45 - 11:30SEA-SNN
13h 45m1 stop
07:45 - 16:55SNN-SEA
17h 10m1 stop
€1,325American Airlines
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Sat, 4 Jan - Sat, 11 Jan
05:45 - 19:25SEA-SNN
29h 40m2 stops
€512
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Thu, 20 Feb
05:45 - 11:30SEA-SNN
21h 45m3 stops
€517Air Canada
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Thu, 20 Feb
13:45 - 11:30SEA-SNN
13h 45m1 stop
€540
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Sat, 4 Jan
19:50 - 19:25SEA-SNN
39h 35m2 stops
€838
Find Deal
Sat, 4 Jan
14:35 - 19:25SEA-SNN
20h 50m3 stops
€880
Find Deal
Sat, 4 Jan
10:35 - 15:45SEA-SNN
21h 10m3 stops
€1,237Air Canada
Find Deal
Fri, 21 Feb
00:55 - 06:00SEA-SNN
21h 05m2 stops
€3,123American Airlines
Find Deal
Fri, 3 Jan

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 €605 on average. On the other hand, the most expensive months are June and February, where the average cost of tickets is €1,078 and €1,048 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 week before departure. For the absolute cheapest price, our data suggests you should book 128 days before departure.

Good to know

Low season

November

High season

September

Cheapest flight

€512
Best time to beat the crowds (10% less expensive on average)
Most popular time to fly and prices are also 18% 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 €541 for a one-way ticket and €864 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?

    Star Alliance, and oneworld 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.
20/2Thu
2 stops
29h 40mSEA-SNN
€512
20/2Thu
3 stopsAir Canada
21h 45mSEA-SNN
€517
4/1Sat
1 stop
13h 45mSEA-SNN
€540
4/1Sat
2 stops
39h 35mSEA-SNN
€838
4/1Sat
3 stops
20h 50mSEA-SNN
€880
21/2Fri
3 stopsAir Canada
21h 10mSEA-SNN
€1,237
3/1Fri
2 stopsAmerican Airlines
21h 05mSEA-SNN
€3,123

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

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