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Cheap flights from Seattle to Shannon from $342

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
1 adult, Economy, 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
10:35 pm - 10:15 am
SEA
-
SNN
27h 40m
2 stops
United Airlines Logo
12:30 pm - 10:42 pm
SNN
-
SEA
18h 12m
2 stops
$712United Airlines
Mon, Apr 20 - Mon, Apr 27
United Airlines Logo
7:00 am - 7:30 am
SEA
-
SNN
16h 30m
1 stop
United Airlines Logo
9:30 am - 10:42 pm
SNN
-
SEA
21h 12m
1 stop
$753United Airlines
Sat, Aug 22 - Wed, Aug 26
United Airlines Logo
5:00 am - 7:30 am
SEA
-
SNN
18h 30m
2 stops
United Airlines Logo
9:30 am - 11:24 pm
SNN
-
SEA
21h 54m
3 stops
$757United Airlines
Sat, Aug 22 - Wed, Aug 26
United Airlines Logo
6:00 pm - 7:30 am
SEA
-
SNN
29h 30m
2 stops
United Airlines Logo
9:30 am - 6:29 pm
SNN
-
SEA
16h 59m
2 stops
$758United Airlines
Sat, Aug 22 - Wed, Aug 26
United Airlines Logo
7:00 am - 7:30 am
SEA
-
SNN
16h 30m
1 stop
United Airlines Logo
9:30 am - 10:42 pm
SNN
-
SEA
21h 12m
1 stop
$803United Airlines
Sat, Aug 22 - Wed, Aug 26
United Airlines Logo
7:00 am - 7:30 am
SEA
-
SNN
16h 30m
1 stop
United Airlines Logo
9:30 am - 3:36 pm
SNN
-
SEA
14h 06m
1 stop
$807United Airlines
Wed, Aug 19 - Sun, Aug 23
United Airlines Logo
7:00 am - 7:30 am
SEA
-
SNN
16h 30m
1 stop
United Airlines Logo
9:30 am - 9:11 pm
SNN
-
SEA
19h 41m
2 stops
$808United Airlines
Sat, Aug 22 - Wed, Aug 26
United Airlines Logo
10:47 am - 7:30 am
SEA
-
SNN
12h 43m
1 stop
United Airlines Logo
9:30 am - 9:11 pm
SNN
-
SEA
19h 41m
2 stops
$811United Airlines
Wed, Aug 19 - Sun, Aug 23
Multiple Airlines Logo
8:00 am - 8:35 pm
SEA
-
SNN
28h 35m
2 stops
Multiple Airlines Logo
7:30 am - 9:08 pm
SNN
-
SEA
21h 38m
2 stops
$837Multiple Airlines
Wed, May 6 - Wed, May 13
United Airlines Logo
5:00 am - 7:30 am
SEA
-
SNN
18h 30m
2 stops
United Airlines Logo
9:30 am - 9:56 pm
SNN
-
SEA
20h 26m
2 stops
$838United Airlines
Wed, Aug 19 - Sun, Aug 23

United Airlines flights from Seattle to Shannon, Clare

Our best United Airlines deals on Seattle to Shannon, Clare flight tickets
United Airlines
Apr 20
SEA10:35 pmSeattle/Tacoma Intl
27h 40m
2 stops
SNN10:15 amShannon
Apr 27
SNN12:30 pmShannon
18h 12m
2 stops
SEA10:42 pmSeattle/Tacoma Intl
$712
United Airlines
Aug 22
SEA7:00 amSeattle/Tacoma Intl
16h 30m
1 stop
SNN7:30 amShannon
Aug 26
SNN9:30 amShannon
21h 12m
1 stop
SEA10:42 pmSeattle/Tacoma Intl
$753
United Airlines
Aug 22
SEA5:00 amSeattle/Tacoma Intl
18h 30m
2 stops
SNN7:30 amShannon
Aug 26
SNN9:30 amShannon
21h 54m
3 stops
SEA11:24 pmSeattle/Tacoma Intl
$757

Aer Lingus flights from Seattle to Shannon, Clare

Our best Aer Lingus deals on Seattle to Shannon, Clare flight tickets
Aer Lingus
May 6
SEA7:10 pmSeattle/Tacoma Intl
17h 25m
2 stops
SNN8:35 pmShannon
May 13
SNN1:45 pmShannon
28h 35m
1 stop
SEA10:20 amSeattle/Tacoma Intl
$905
Aer Lingus
Apr 14
SEA7:10 pmSeattle/Tacoma Intl
17h 25m
2 stops
SNN8:35 pmShannon
Apr 25
SNN7:30 amShannon
17h 40m
2 stops
SEA5:10 pmSeattle/Tacoma Intl
$926
Aer Lingus
May 8
SEA7:10 pmSeattle/Tacoma Intl
32h 10m
2 stops
SNN11:20 amShannon
May 15
SNN7:30 amShannon
17h 40m
2 stops
SEA5:10 pmSeattle/Tacoma Intl
$941

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 March 28, 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

Cheapest round-trip

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Mon 4/20

10:35 pm-10:15 am

2 stops27h 40m

Shannon

Mon 4/27

12:30 pm-10:42 pm

2 stops18h 12m

$712

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Sat 8/22

7:00 am-7:30 am

1 stop16h 30m

Shannon

Wed 8/26

9:30 am-10:42 pm

1 stop21h 12m

$753

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Sat 8/22

5:00 am-7:30 am

2 stops18h 30m

Shannon

Wed 8/26

9:30 am-11:24 pm

3 stops21h 54m

$757

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Sat 8/22

6:00 pm-7:30 am

2 stops29h 30m

Shannon

Wed 8/26

9:30 am-6:29 pm

2 stops16h 59m

$758

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Sat 8/22

7:00 am-7:30 am

1 stop16h 30m

Shannon

Wed 8/26

9:30 am-10:42 pm

1 stop21h 12m

$803
Quickest round-trip

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Wed 8/19

7:00 am-7:30 am

1 stop16h 30m

Shannon

Sun 8/23

9:30 am-3:36 pm

1 stop14h 06m

$807

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Sat 8/22

7:00 am-7:30 am

1 stop16h 30m

Shannon

Wed 8/26

9:30 am-9:11 pm

2 stops19h 41m

$808

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Wed 8/19

10:47 am-7:30 am

1 stop12h 43m

Shannon

Sun 8/23

9:30 am-9:11 pm

2 stops19h 41m

$811

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Wed 5/6

8:00 am-8:35 pm

2 stops28h 35m

Shannon

Wed 5/13

7:30 am-9:08 pm

2 stops21h 38m

$837

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Wed 8/19

5:00 am-7:30 am

2 stops18h 30m

Shannon

Sun 8/23

9:30 am-9:56 pm

2 stops20h 26m

$838

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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?

Aer Lingus and United Airlines are the most popular carriers operating from Seattle/Tacoma Intl to Shannon

What airlines fly to Shannon, Clare?

American Airlines, British Airways and United Airlines 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 4 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

13h 10m

Direct flights

None
The fastest flight from Seattle to Shannon, Clare takes 13h 10m
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 10m.

  • 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
7.1
11,520 reviews
Search American Airlines flights
United AirlinesPriceFrom $592Free CancellationRating
7.4
9,499 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
Ennis
Adare
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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