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Cheap flights from Seattle to Shannon from $390

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 4/21. 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

Enter your travel dates to find the best prices.
American Airlines Logo
6:50 pm - 4:45 pm
SEA
-
SNN
13h 55m1 stop
American Airlines Logo
7:50 am - 5:55 pm
SNN
-
SEA
17h 05m1 stop
$469American Airlines
Sun, Mar 1 - Tue, Mar 10
American Airlines Logo
7:15 am - 11:30 am
SEA
-
SNN
20h 15m2 stops
American Airlines Logo
7:50 am - 5:55 pm
SNN
-
SEA
17h 05m1 stop
$474American Airlines
Sun, Mar 1 - Tue, Mar 10
American Airlines Logo
7:15 am - 11:30 am
SEA
-
SNN
20h 15m2 stops
American Airlines Logo
7:50 am - 9:54 pm
SNN
-
SEA
21h 04m2 stops
$484American Airlines
Sun, Mar 1 - Tue, Mar 10
American Airlines Logo
1:35 pm - 11:20 am
SEA
-
SNN
13h 45m1 stop
American Airlines Logo
7:40 am - 11:05 pm
SNN
-
SEA
23h 25m2 stops
$529American Airlines
Tue, Apr 14 - Sat, Apr 25
American Airlines Logo
3:21 pm - 4:10 pm
SEA
-
SNN
16h 49m2 stops
American Airlines Logo
7:40 am - 11:05 pm
SNN
-
SEA
23h 25m2 stops
$534American Airlines
Tue, Apr 14 - Sat, Apr 25
Air Canada Logo
10:05 am - 3:45 pm
SEA
-
SNN
21h 40m2 stops
Air Canada Logo
5:30 pm - 7:16 pm
SNN
-
SEA
33h 46m2 stops
$669Air Canada
Fri, Jan 30 - Tue, Feb 3
British Airways Logo
1:35 pm - 3:45 pm
SEA
-
SNN
18h 10m1 stop
British Airways Logo
7:50 am - 4:55 pm
SNN
-
SEA
17h 05m1 stop
$671British Airways
Fri, Jan 30 - Tue, Feb 3
Multiple Airlines Logo
1:35 pm - 11:20 am
SEA
-
SNN
13h 45m1 stop
Multiple Airlines Logo
5:30 pm - 11:35 am
SNN
-
SEA
26h 05m1 stop
$688Multiple Airlines
Tue, Apr 14 - Sat, Apr 25
Multiple Airlines Logo
8:00 pm - 8:35 pm
SEA
-
SNN
40h 35m2 stops
Multiple Airlines Logo
7:40 am - 7:18 pm
SNN
-
SEA
19h 38m3 stops
$719Multiple Airlines
Tue, Apr 14 - Sat, Apr 25
Aer Lingus Logo
1:35 pm - 11:30 am
SEA
-
SNN
13h 55m1 stop
Aer Lingus Logo
7:50 am - 4:55 pm
SNN
-
SEA
17h 05m1 stop
$932Aer Lingus
Sat, Feb 7 - Fri, Feb 20

American Airlines flights from Seattle to Shannon, Clare

Our best American Airlines deals on Seattle to Shannon, Clare flight tickets
American Airlines
Mar 1
SEA6:50 pmSeattle/Tacoma Intl
13h 55m
1 stop
SNN4:45 pmShannon
Mar 10
SNN7:50 amShannon
17h 05m
1 stop
SEA5:55 pmSeattle/Tacoma Intl
$469
Find similar
American Airlines
Mar 1
SEA7:15 amSeattle/Tacoma Intl
20h 15m
2 stops
SNN11:30 amShannon
Mar 10
SNN7:50 amShannon
17h 05m
1 stop
SEA5:55 pmSeattle/Tacoma Intl
$474
Find similar
American Airlines
Mar 1
SEA7:15 amSeattle/Tacoma Intl
20h 15m
2 stops
SNN11:30 amShannon
Mar 10
SNN7:50 amShannon
21h 04m
2 stops
SEA9:54 pmSeattle/Tacoma Intl
$484
Find similar

British Airways flights from Seattle to Shannon, Clare

Our best British Airways deals on Seattle to Shannon, Clare flight tickets
British Airways
Jan 30
SEA1:35 pmSeattle/Tacoma Intl
18h 10m
1 stop
SNN3:45 pmShannon
Feb 3
SNN7:50 amShannon
17h 05m
1 stop
SEA4:55 pmSeattle/Tacoma Intl
$671
Find similar
British Airways
Dec 24
SEA6:50 pmSeattle/Tacoma Intl
32h 40m
1 stop
SNN11:30 amShannon
Dec 31
SNN7:50 amShannon
18h 39m
2 stops
SEA6:29 pmSeattle/Tacoma Intl
$2,164
Find similar
British Airways
Dec 24
SEA7:23 pmSeattle/Tacoma Intl
40h 02m
2 stops
SNN7:25 pmShannon
Dec 31
SNN7:50 amShannon
18h 39m
2 stops
SEA6:29 pmSeattle/Tacoma Intl
$2,178
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 December 11, 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 3/1

6:50 pm-4:45 pm

1 stop13h 55m

Shannon

Tue 3/10

7:50 am-5:55 pm

1 stop17h 05m

$469

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Sun 3/1

7:15 am-11:30 am

2 stops20h 15m

Shannon

Tue 3/10

7:50 am-5:55 pm

1 stop17h 05m

$474

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Sun 3/1

7:15 am-11:30 am

2 stops20h 15m

Shannon

Tue 3/10

7:50 am-9:54 pm

2 stops21h 04m

$484

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Tue 4/14

1:35 pm-11:20 am

1 stop13h 45m

Shannon

Sat 4/25

7:40 am-11:05 pm

2 stops23h 25m

$529

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Tue 4/14

3:21 pm-4:10 pm

2 stops16h 49m

Shannon

Sat 4/25

7:40 am-11:05 pm

2 stops23h 25m

$534

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Fri 1/30

10:05 am-3:45 pm

2 stops21h 40m

Shannon

Tue 2/3

5:30 pm-7:16 pm

2 stops33h 46m

$669

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Fri 1/30

1:35 pm-3:45 pm

1 stop18h 10m

Shannon

Tue 2/3

7:50 am-4:55 pm

1 stop17h 05m

$671

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Tue 4/14

1:35 pm-11:20 am

1 stop13h 45m

Shannon

Sat 4/25

5:30 pm-11:35 am

1 stop26h 05m

$688

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Tue 4/14

8:00 pm-8:35 pm

2 stops40h 35m

Shannon

Sat 4/25

7:40 am-7:18 pm

3 stops19h 38m

$719

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Sat 2/7

1:35 pm-11:30 am

1 stop13h 55m

Shannon

Fri 2/20

7:50 am-4:55 pm

1 stop17h 05m

$932

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 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

Fastest flight time

12h 55m

Direct flights

None
The fastest flight from Seattle to Shannon, Clare takes 12h 55m
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 12h 55m.

  • 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 $488Free CancellationRating
7.2
11,049 reviews
Search American Airlines flights
United AirlinesPriceFrom $593Free CancellationRating
7.4
9,094 reviews
Search United Airlines flights
Aer LingusPriceFrom $759Free CancellationRating
7.2
1,394 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
Adare
Bunratty
Ennis
Nenagh
Lahinch

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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