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Cheap flights from Seattle to Shannon from $266

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 5/18. 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.
United Airlines Logo
7:00 am - 10:15 am
SEA
-
SNN
19h 15m
2 stops
United Airlines Logo
12:30 pm - 9:06 pm
SNN
-
SEA
16h 36m
2 stops
$523United Airlines
Tue, Apr 7 - Wed, Apr 29
United Airlines Logo
12:08 pm - 10:15 am
SEA
-
SNN
14h 07m
1 stop
United Airlines Logo
12:30 pm - 11:27 pm
SNN
-
SEA
18h 57m
2 stops
$543United Airlines
Tue, Apr 14 - Sat, Apr 25
United Airlines Logo
12:22 pm - 10:15 am
SEA
-
SNN
37h 53m
2 stops
United Airlines Logo
12:30 pm - 11:48 am
SNN
-
SEA
31h 18m
2 stops
$566United Airlines
Tue, Apr 14 - Sat, Apr 25
United Airlines Logo
5:00 am - 10:15 am
SEA
-
SNN
21h 15m
2 stops
United Airlines Logo
12:30 pm - 1:56 pm
SNN
-
SEA
33h 26m
3 stops
$593United Airlines
Sat, Aug 15 - Sat, Aug 22
United Airlines Logo
7:00 am - 10:15 am
SEA
-
SNN
19h 15m
2 stops
United Airlines Logo
12:30 pm - 7:00 pm
SNN
-
SEA
38h 30m
2 stops
$605United Airlines
Sat, Apr 11 - Sat, Apr 18
Multiple Airlines Logo
8:00 am - 8:35 pm
SEA
-
SNN
28h 35m
2 stops
Multiple Airlines Logo
12:00 pm - 12:20 pm
SNN
-
SEA
32h 20m
1 stop
$633Multiple Airlines
Tue, Apr 14 - Sat, Apr 25
British Airways Logo
7:50 pm - 11:30 am
SEA
-
SNN
32h 40m
1 stop
British Airways Logo
8:05 pm - 7:20 pm
SNN
-
SEA
30h 15m
2 stops
$646British Airways
Tue, Mar 17 - Tue, Mar 24
British Airways Logo
3:50 pm - 7:25 pm
SEA
-
SNN
20h 35m
2 stops
British Airways Logo
5:30 pm - 7:20 pm
SNN
-
SEA
32h 50m
2 stops
$648British Airways
Tue, Mar 17 - Tue, Mar 24
United Airlines Logo
10:52 am - 7:30 am
SEA
-
SNN
12h 38m
1 stop
United Airlines Logo
9:30 am - 11:59 pm
SNN
-
SEA
22h 29m
1 stop
$649United Airlines
Thu, Jul 16 - Tue, Jul 28
United Airlines Logo
6:30 am - 7:30 am
SEA
-
SNN
17h 00m
2 stops
United Airlines Logo
9:30 am - 9:10 pm
SNN
-
SEA
19h 40m
2 stops
$653United Airlines
Thu, Jul 16 - Tue, Jul 28

Aer Lingus flights from Seattle to Shannon, Clare

Our best Aer Lingus deals on Seattle to Shannon, Clare flight tickets
Aer Lingus
Mar 18
SEA9:05 pmSeattle/Tacoma Intl
15h 20m
2 stops
SNN7:25 pmShannon
Mar 25
SNN7:50 amShannon
18h 30m
2 stops
SEA7:20 pmSeattle/Tacoma Intl
$657
Aer Lingus
Apr 14
SEA7:10 pmSeattle/Tacoma Intl
17h 25m
2 stops
SNN8:35 pmShannon
Apr 25
SNN5:25 pmShannon
31h 45m
2 stops
SEA5:10 pmSeattle/Tacoma Intl
$685
Aer Lingus
Jul 25
SEA7:10 pmSeattle/Tacoma Intl
17h 25m
2 stops
SNN8:35 pmShannon
Jul 31
SNN9:15 pmShannon
27h 55m
2 stops
SEA5:10 pmSeattle/Tacoma Intl
$907

British Airways flights from Seattle to Shannon, Clare

Our best British Airways deals on Seattle to Shannon, Clare flight tickets
British Airways
Mar 17
SEA7:50 pmSeattle/Tacoma Intl
32h 40m
1 stop
SNN11:30 amShannon
Mar 24
SNN8:05 pmShannon
30h 15m
2 stops
SEA7:20 pmSeattle/Tacoma Intl
$646
British Airways
Mar 17
SEA3:50 pmSeattle/Tacoma Intl
20h 35m
2 stops
SNN7:25 pmShannon
Mar 24
SNN5:30 pmShannon
32h 50m
2 stops
SEA7:20 pmSeattle/Tacoma Intl
$648
British Airways
Apr 14
SEA8:20 pmSeattle/Tacoma Intl
16h 15m
1 stop
SNN8:35 pmShannon
Apr 25
SNN5:25 pmShannon
31h 45m
2 stops
SEA5:10 pmSeattle/Tacoma Intl
$695

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 February 19, 2026.
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

Tue 4/7

7:00 am-10:15 am

2 stops19h 15m

Shannon

Wed 4/29

12:30 pm-9:06 pm

2 stops16h 36m

$523

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Tue 4/14

12:08 pm-10:15 am

1 stop14h 07m

Shannon

Sat 4/25

12:30 pm-11:27 pm

2 stops18h 57m

$543

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Tue 4/14

12:22 pm-10:15 am

2 stops37h 53m

Shannon

Sat 4/25

12:30 pm-11:48 am

2 stops31h 18m

$566

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Sat 8/15

5:00 am-10:15 am

2 stops21h 15m

Shannon

Sat 8/22

12:30 pm-1:56 pm

3 stops33h 26m

$593

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Sat 4/11

7:00 am-10:15 am

2 stops19h 15m

Shannon

Sat 4/18

12:30 pm-7:00 pm

2 stops38h 30m

$605

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Tue 4/14

8:00 am-8:35 pm

2 stops28h 35m

Shannon

Sat 4/25

12:00 pm-12:20 pm

1 stop32h 20m

$633

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Tue 3/17

7:50 pm-11:30 am

1 stop32h 40m

Shannon

Tue 3/24

8:05 pm-7:20 pm

2 stops30h 15m

$646

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Tue 3/17

3:50 pm-7:25 pm

2 stops20h 35m

Shannon

Tue 3/24

5:30 pm-7:20 pm

2 stops32h 50m

$648

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Thu 7/16

10:52 am-7:30 am

1 stop12h 38m

Shannon

Tue 7/28

9:30 am-11:59 pm

1 stop22h 29m

$649

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Thu 7/16

6:30 am-7:30 am

2 stops17h 00m

Shannon

Tue 7/28

9:30 am-9:10 pm

2 stops19h 40m

$653

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 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 airline that flies from Seattle/Tacoma Intl to Shannon?

United Airlines is the most popular carrier operating from Seattle/Tacoma Intl to Shannon

What airlines fly to Shannon, Clare?

American Airlines, United Airlines and British Airways are the top three most popular airlines that fly to Shannon, Clare from Seattle according to our data. American Airlines is the first choice among our users, with 36% of people opting to fly with this airline when traveling to Shannon, Clare. Keep in mind that there are 5 different airlines that fly to Shannon, Clare on a routine basis, so you have a few additional options to choose from.

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 38m

Direct flights

None
The fastest flight from Seattle to Shannon, Clare takes 12h 38m
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 38m.

  • 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 $469Free CancellationRating
7.2
11,313 reviews
Search American Airlines flights
United AirlinesPriceFrom $593Free CancellationRating
7.4
9,321 reviews
Search United Airlines flights

Traveling to a place near Shannon?

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