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Cheap flights from Seattle to Shannon from $325

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 10/4. 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
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
Wed, Sep 2 - Thu, Sep 10
United Airlines Logo
7:00 am - 10:15 am
SEA
-
SNN
19h 15m
2 stops
United Airlines Logo
9:30 am - 6:59 pm
SNN
-
SEA
17h 29m
1 stop
$757United Airlines
Tue, Aug 4 - Tue, Aug 25
United Airlines Logo
7:00 am - 10:15 am
SEA
-
SNN
19h 15m
2 stops
United Airlines Logo
9:30 am - 11:24 pm
SNN
-
SEA
21h 54m
3 stops
$758United Airlines
Tue, Aug 4 - Tue, Aug 25
United Airlines Logo
5:00 pm - 7:30 am
SEA
-
SNN
30h 30m
1 stop
United Airlines Logo
9:30 am - 6:59 pm
SNN
-
SEA
17h 29m
1 stop
$759United Airlines
Mon, Aug 31 - Tue, Sep 15
United Airlines Logo
5:00 pm - 7:30 am
SEA
-
SNN
30h 30m
1 stop
United Airlines Logo
9:30 am - 9:11 pm
SNN
-
SEA
19h 41m
2 stops
$763United Airlines
Tue, Aug 25 - Tue, Sep 8
United Airlines Logo
1:56 pm - 7:30 am
SEA
-
SNN
33h 34m
1 stop
United Airlines Logo
9:30 am - 11:17 am
SNN
-
SEA
33h 47m
1 stop
$765United Airlines
Tue, Aug 25 - Thu, Sep 10
Delta Logo
7:20 am - 11:10 am
SEA
-
SNN
19h 50m
1 stop
Delta Logo
1:05 pm - 10:16 pm
SNN
-
SEA
17h 11m
1 stop
$770Delta
Sun, Aug 30 - Tue, Sep 15
Delta Logo
6:00 am - 11:10 am
SEA
-
SNN
21h 10m
2 stops
Delta Logo
1:05 pm - 12:03 am
SNN
-
SEA
18h 58m
2 stops
$774Delta
Sun, Aug 30 - Wed, Sep 9
United Airlines Logo
5:00 pm - 7:30 am
SEA
-
SNN
30h 30m
1 stop
United Airlines Logo
9:30 am - 3:36 pm
SNN
-
SEA
14h 06m
1 stop
$775United Airlines
Sat, Aug 29 - Wed, Sep 9
Delta Logo
9:55 pm - 11:10 am
SEA
-
SNN
29h 15m
1 stop
Delta Logo
1:05 pm - 10:16 pm
SNN
-
SEA
17h 11m
1 stop
$776Delta
Sat, Aug 29 - Thu, Sep 10

United Airlines flights from Seattle to Shannon, Clare

Our best United Airlines deals on Seattle to Shannon, Clare flight tickets
United Airlines
Sep 2
SEA7:00 amSeattle/Tacoma Intl
16h 30m
1 stop
SNN7:30 amShannon
Sep 11
SNN9:30 amShannon
17h 29m
1 stop
SEA6:59 pmSeattle/Tacoma Intl
$753
United Airlines
Aug 4
SEA8:30 amSeattle/Tacoma Intl
17h 45m
2 stops
SNN10:15 amShannon
Aug 25
SNN9:30 amShannon
20h 26m
2 stops
SEA9:56 pmSeattle/Tacoma Intl
$757
United Airlines
Aug 4
SEA8:30 amSeattle/Tacoma Intl
17h 45m
2 stops
SNN10:15 amShannon
Aug 25
SNN9:30 amShannon
17h 29m
1 stop
SEA6:59 pmSeattle/Tacoma Intl
$758

Delta flights from Seattle to Shannon, Clare

Our best Delta deals on Seattle to Shannon, Clare flight tickets
Delta
Aug 30
SEA7:20 amSeattle/Tacoma Intl
19h 50m
1 stop
SNN11:10 amShannon
Sep 8
SNN1:05 pmShannon
17h 11m
1 stop
SEA10:16 pmSeattle/Tacoma Intl
$770
Delta
Aug 30
SEA6:00 amSeattle/Tacoma Intl
21h 10m
2 stops
SNN11:10 amShannon
Sep 8
SNN1:05 pmShannon
18h 58m
2 stops
SEA12:03 amSeattle/Tacoma Intl
$774
Delta
Aug 29
SEA9:55 pmSeattle/Tacoma Intl
29h 15m
1 stop
SNN11:10 amShannon
Sep 10
SNN1:05 pmShannon
17h 11m
1 stop
SEA10:16 pmSeattle/Tacoma Intl
$776

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 April 7, 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

Wed 9/2

7:00 am-7:30 am

1 stop16h 30m

Shannon

Thu 9/10

9:30 am-10:42 pm

1 stop21h 12m

$753
Quickest round-trip

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Tue 8/4

7:00 am-10:15 am

2 stops19h 15m

Shannon

Tue 8/25

9:30 am-6:59 pm

1 stop17h 29m

$757

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Tue 8/4

7:00 am-10:15 am

2 stops19h 15m

Shannon

Tue 8/25

9:30 am-11:24 pm

3 stops21h 54m

$758

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Mon 8/31

5:00 pm-7:30 am

1 stop30h 30m

Shannon

Tue 9/15

9:30 am-6:59 pm

1 stop17h 29m

$759

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Tue 8/25

5:00 pm-7:30 am

1 stop30h 30m

Shannon

Tue 9/8

9:30 am-9:11 pm

2 stops19h 41m

$763

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Tue 8/25

1:56 pm-7:30 am

1 stop33h 34m

Shannon

Thu 9/10

9:30 am-11:17 am

1 stop33h 47m

$765

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Sun 8/30

7:20 am-11:10 am

1 stop19h 50m

Shannon

Tue 9/15

1:05 pm-10:16 pm

1 stop17h 11m

$770

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Sun 8/30

6:00 am-11:10 am

2 stops21h 10m

Shannon

Wed 9/9

1:05 pm-12:03 am

2 stops18h 58m

$774

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Sat 8/29

5:00 pm-7:30 am

1 stop30h 30m

Shannon

Wed 9/9

9:30 am-3:36 pm

1 stop14h 06m

$775

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Sat 8/29

9:55 pm-11:10 am

1 stop29h 15m

Shannon

Thu 9/10

1:05 pm-10:16 pm

1 stop17h 11m

$776

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?

United Airlines is the most popular carrier 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 38% 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

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

Frequently asked questions about flying from Seattle to Shannon, Clare

  • 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
7.1
11,546 reviews
Search American Airlines flights
United AirlinesPriceFrom $586Free CancellationRating
7.4
9,548 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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