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Cheap flights from Seattle to Shannon from $336

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Shannon departing on 9/30. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Seattle to Shannon

Cheap round-trip flights

American Airlines Logo
1:30 pm - 11:20 amSEA-SNN
13h 50m1 stop
American Airlines Logo
7:50 am - 4:55 pmSNN-SEA
17h 05m1 stop
$488American Airlines
Find Deal
Sun, Oct 19 - Tue, Nov 4
American Airlines Logo
1:35 pm - 4:10 pmSEA-SNN
18h 35m2 stops
American Airlines Logo
7:50 am - 9:18 pmSNN-SEA
21h 28m2 stops
$494American Airlines
Find Deal
Sun, Oct 19 - Tue, Nov 4
American Airlines Logo
1:30 pm - 8:35 pmSEA-SNN
23h 05m1 stop
American Airlines Logo
9:15 pm - 6:20 pmSNN-SEA
29h 05m1 stop
$584American Airlines
Find Deal
Thu, Oct 9 - Thu, Oct 16
United Airlines Logo
6:35 am - 10:15 amSEA-SNN
19h 40m2 stops
United Airlines Logo
12:30 pm - 11:15 pmSNN-SEA
18h 45m2 stops
$611United Airlines
Find Deal
Fri, Oct 10 - Fri, Oct 17
Logo
3:45 pm - 8:50 pmSEA-SNN
21h 05m2 stops
Logo
10:50 am - 8:40 pmSNN-SEA
17h 50m2 stops
$617
Find Deal
Thu, Oct 9 - Thu, Oct 16
United Airlines Logo
6:35 am - 10:15 amSEA-SNN
19h 40m2 stops
United Airlines Logo
12:30 pm - 11:15 pmSNN-SEA
18h 45m2 stops
$706United Airlines
Find Deal
Wed, Oct 8 - Wed, Oct 15
British Airways Logo
1:35 pm - 11:30 amSEA-SNN
13h 55m1 stop
British Airways Logo
7:50 am - 4:55 pmSNN-SEA
17h 05m1 stop
$806British Airways
Find Deal
Sat, Dec 13 - Wed, Dec 24
British Airways Logo
3:48 pm - 7:25 pmSEA-SNN
19h 37m2 stops
British Airways Logo
5:30 pm - 4:55 pmSNN-SEA
31h 25m1 stop
$811British Airways
Find Deal
Sat, Dec 13 - Tue, Dec 23
Aer Lingus Logo
6:50 pm - 4:45 pmSEA-SNN
13h 55m1 stop
Aer Lingus Logo
5:30 pm - 4:55 pmSNN-SEA
31h 25m1 stop
$859Aer Lingus
Find Deal
Sun, Dec 14 - Tue, Dec 23
Aer Lingus Logo
6:50 pm - 4:45 pmSEA-SNN
13h 55m1 stop
Aer Lingus Logo
5:30 pm - 4:55 pmSNN-SEA
31h 25m1 stop
$920Aer Lingus
Find Deal
Mon, Dec 15 - Tue, Dec 23

American Airlines flights from Seattle to Shannon, Clare

Our best American Airlines deals on Seattle to Shannon, Clare flight tickets
American Airlines
Oct 19
SEA1:30 pmSeattle/Tacoma Intl
13h 50m
1 stop
SNN11:20 amShannon
Nov 4
SNN7:50 amShannon
17h 05m
1 stop
SEA4:55 pmSeattle/Tacoma Intl
$488
Find similar
American Airlines
Oct 19
SEA1:35 pmSeattle/Tacoma Intl
18h 35m
2 stops
SNN4:10 pmShannon
Nov 4
SNN7:50 amShannon
21h 28m
2 stops
SEA9:18 pmSeattle/Tacoma Intl
$494
Find similar
American Airlines
Oct 9
SEA1:30 pmSeattle/Tacoma Intl
23h 05m
1 stop
SNN8:35 pmShannon
Oct 16
SNN9:15 pmShannon
29h 05m
1 stop
SEA6:20 pmSeattle/Tacoma Intl
$584
Find similar

Air Canada flights from Seattle to Shannon, Clare

Our best Air Canada deals on Seattle to Shannon, Clare flight tickets
Air Canada
Oct 19
SEA10:00 amSeattle/Tacoma Intl
26h 35m
2 stops
SNN8:35 pmShannon
Nov 4
SNN7:50 amShannon
33h 41m
3 stops
SEA9:31 amSeattle/Tacoma Intl
$697
Find similar
Air Canada
Dec 14
SEA8:15 amSeattle/Tacoma Intl
24h 30m
2 stops
SNN4:45 pmShannon
Dec 24
SNN5:30 pmShannon
52h 56m
2 stops
SEA2:26 pmSeattle/Tacoma Intl
$741
Find similar
Air Canada
Dec 14
SEA8:15 amSeattle/Tacoma Intl
24h 30m
2 stops
SNN4:45 pmShannon
Dec 23
SNN7:50 amShannon
46h 06m
2 stops
SEA9:56 pmSeattle/Tacoma Intl
$747
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Shannon, Clare that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated August 26, 2025.
Use the filters below to find and compare flights from Seattle to Shannon, Clare that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Sun 10/19

1:30 pm-11:20 am

1 stop13h 50m

Shannon

Tue 11/4

7:50 am-4:55 pm

1 stop17h 05m

$488

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Sun 10/19

1:35 pm-4:10 pm

2 stops18h 35m

Shannon

Tue 11/4

7:50 am-9:18 pm

2 stops21h 28m

$494

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Thu 10/9

1:30 pm-8:35 pm

1 stop23h 05m

Shannon

Thu 10/16

9:15 pm-6:20 pm

1 stop29h 05m

$584

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Fri 10/10

6:35 am-10:15 am

2 stops19h 40m

Shannon

Fri 10/17

12:30 pm-11:15 pm

2 stops18h 45m

$611

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Thu 10/9

3:45 pm-8:50 pm

2 stops21h 05m

Shannon

Thu 10/16

10:50 am-8:40 pm

2 stops17h 50m

$617

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Wed 10/8

6:35 am-10:15 am

2 stops19h 40m

Shannon

Wed 10/15

12:30 pm-11:15 pm

2 stops18h 45m

$706

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Sat 12/13

1:35 pm-11:30 am

1 stop13h 55m

Shannon

Wed 12/24

7:50 am-4:55 pm

1 stop17h 05m

$806

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Sat 12/13

3:48 pm-7:25 pm

2 stops19h 37m

Shannon

Tue 12/23

5:30 pm-4:55 pm

1 stop31h 25m

$811

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Sun 12/14

6:50 pm-4:45 pm

1 stop13h 55m

Shannon

Tue 12/23

5:30 pm-4:55 pm

1 stop31h 25m

$859

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Mon 12/15

6:50 pm-4:45 pm

1 stop13h 55m

Shannon

Tue 12/23

5:30 pm-4:55 pm

1 stop31h 25m

$920

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
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See travel insights to Shannon from

How to get the cheapest flight ticket from Seattle to Shannon, Clare

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Shannon, Clare?

The cheapest day to depart from Seattle to Shannon, Clare is on a Tuesday when prices can be found for as low as $745. The most expensive day to fly to Shannon, Clare is Saturday, with ticket prices averaging around $1,142.

What is the cheapest time of day to depart on your flight to Shannon, Clare?

Our data shows that the cheapest Seattle to Shannon, Clare flights are usually those with departure times in the afternoon. Our users have found flights to Shannon, Clare in the afternoon for as low as $789. Flights in the evening are often more expensive with an average ticket price of $895.

When to book flights from Seattle to Shannon, Clare

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Shannon, Clare according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Seattle to Shannon, Clare (SEA to SNN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Shannon, Clare

Direct flights

None
There are no direct flights from Seattle to Shannon, Clare. There are no popular flight routes from Seattle to Shannon, Clare.
Search flight deals

  • How far is Seattle/Tacoma Intl to Shannon by plane?

    The straight-line distance from Seattle/Tacoma Intl to Shannon is 4478.2 mi. By plane, this route typically takes 13h 50m.

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Shannon Airport?

    Prices for flights from Seattle/Tacoma Intl Airport to Shannon Airport are updated daily.

  • How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Shannon Airport?

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Shannon Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Shannon Airport.

  • What documentation or ID do you need to fly to Shannon Airport?

    The travel and health documents you'll need for your trip to Shannon Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Shannon Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Seattle to Shannon, Clare?

Best airlines flying from Seattle to Shannon, Clare

Compare and see reviews for airlines that fly from Seattle to Shannon, Clare with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $541Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $593Free CancellationRating
7.4
8,943 reviews
Search United Airlines flights
British AirwaysPriceFrom $703Free CancellationRating
6.7
7,309 reviews
Search British Airways flights
Aer LingusPriceFrom $703Free CancellationRating
7.2
1,237 reviews
Search Aer Lingus flights

Traveling to a place near Shannon?

Book flights to Shannon if you plan to visit one of these locations
Limerick
Ennis
Adare
Bunratty
Lahinch
Nenagh

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Shannon?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Seattle to Shannon for you.

Can I find flights from Seattle to Shannon with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Shannon from Seattle with this policy.

How can momondo help me find flights from Seattle to Shannon?

Once you have performed a search for Seattle to Shannon flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Seattle to Shannon right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Seattle to Shannon flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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