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Cheap flights from Seattle to Shannon from $239

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 4/20. 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
12:08 pm - 10:15 am
SEA
-
SNN
14h 07m
1 stop
United Airlines Logo
12:30 pm - 10:39 am
SNN
-
SEA
30h 09m
2 stops
$563United Airlines
Tue, Apr 21 - Tue, Apr 28
United Airlines Logo
11:55 am - 10:15 am
SEA
-
SNN
14h 20m
1 stop
United Airlines Logo
12:30 pm - 11:48 am
SNN
-
SEA
31h 18m
2 stops
$568United Airlines
Mon, May 4 - Tue, May 12
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
$613Delta
Sun, Sep 6 - Wed, Sep 16
United Airlines Logo
5:00 am - 10:15 am
SEA
-
SNN
21h 15m
2 stops
United Airlines Logo
12:30 pm - 3:51 pm
SNN
-
SEA
35h 21m
2 stops
$625United Airlines
Sun, Apr 19 - Sun, Apr 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
$638United Airlines
Thu, Aug 27 - Wed, Sep 2
United Airlines Logo
5:00 am - 7:30 am
SEA
-
SNN
18h 30m
2 stops
United Airlines Logo
9:30 am - 9:11 pm
SNN
-
SEA
19h 41m
2 stops
$643United Airlines
Thu, Aug 27 - Wed, Sep 2
United Airlines Logo
10:47 pm - 7:30 am
SEA
-
SNN
24h 43m
1 stop
United Airlines Logo
9:30 am - 9:35 am
SNN
-
SEA
32h 05m
1 stop
$649United Airlines
Tue, Sep 1 - Mon, Sep 7
United Airlines Logo
10:47 pm - 7:30 am
SEA
-
SNN
24h 43m
1 stop
United Airlines Logo
9:30 am - 10:03 am
SNN
-
SEA
32h 33m
2 stops
$659United Airlines
Tue, Sep 1 - Mon, Sep 7
United Airlines Logo
5:00 pm - 7:30 am
SEA
-
SNN
30h 30m
2 stops
United Airlines Logo
9:30 am - 2:22 pm
SNN
-
SEA
36h 52m
3 stops
$663United Airlines
Sun, Aug 30 - Mon, Sep 7
United Airlines Logo
7:00 am - 7:30 am
SEA
-
SNN
16h 30m
1 stop
United Airlines Logo
9:30 am - 9:35 am
SNN
-
SEA
32h 05m
1 stop
$665United Airlines
Sun, Aug 30 - Mon, Sep 7

United Airlines flights from Seattle to Shannon, Clare

Our best United Airlines deals on Seattle to Shannon, Clare flight tickets
United Airlines
Apr 21
SEA12:08 pmSeattle/Tacoma Intl
14h 07m
1 stop
SNN10:15 amShannon
Apr 28
SNN12:30 pmShannon
30h 09m
2 stops
SEA10:39 amSeattle/Tacoma Intl
$563
United Airlines
May 4
SEA11:55 amSeattle/Tacoma Intl
14h 20m
1 stop
SNN10:15 amShannon
May 12
SNN12:30 pmShannon
31h 18m
2 stops
SEA11:48 amSeattle/Tacoma Intl
$568
United Airlines
Apr 19
SEA5:00 amSeattle/Tacoma Intl
21h 15m
2 stops
SNN10:15 amShannon
Apr 26
SNN12:30 pmShannon
35h 21m
2 stops
SEA3:51 pmSeattle/Tacoma Intl
$625

Delta flights from Seattle to Shannon, Clare

Our best Delta deals on Seattle to Shannon, Clare flight tickets
Delta
Sep 6
SEA9:55 pmSeattle/Tacoma Intl
29h 15m
1 stop
SNN11:10 amShannon
Sep 16
SNN1:05 pmShannon
17h 11m
1 stop
SEA10:16 pmSeattle/Tacoma Intl
$613
Delta
Aug 19
SEA9:55 pmSeattle/Tacoma Intl
29h 15m
1 stop
SNN11:10 amShannon
Aug 31
SNN1:05 pmShannon
29h 19m
1 stop
SEA10:24 amSeattle/Tacoma Intl
$727

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 10, 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

Tue 4/21

12:08 pm-10:15 am

1 stop14h 07m

Shannon

Tue 4/28

12:30 pm-10:39 am

2 stops30h 09m

$563

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Mon 5/4

11:55 am-10:15 am

1 stop14h 20m

Shannon

Tue 5/12

12:30 pm-11:48 am

2 stops31h 18m

$568

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Sun 9/6

9:55 pm-11:10 am

1 stop29h 15m

Shannon

Wed 9/16

1:05 pm-10:16 pm

1 stop17h 11m

$613

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Sun 4/19

5:00 am-10:15 am

2 stops21h 15m

Shannon

Sun 4/26

12:30 pm-3:51 pm

2 stops35h 21m

$625
Quickest round-trip

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Thu 8/27

7:00 am-7:30 am

1 stop16h 30m

Shannon

Wed 9/2

9:30 am-10:42 pm

1 stop21h 12m

$638

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Thu 8/27

5:00 am-7:30 am

2 stops18h 30m

Shannon

Wed 9/2

9:30 am-9:11 pm

2 stops19h 41m

$643

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Tue 9/1

10:47 pm-7:30 am

1 stop24h 43m

Shannon

Mon 9/7

9:30 am-9:35 am

1 stop32h 05m

$649

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Tue 9/1

10:47 pm-7:30 am

1 stop24h 43m

Shannon

Mon 9/7

9:30 am-10:03 am

2 stops32h 33m

$659

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Sun 8/30

5:00 pm-7:30 am

2 stops30h 30m

Shannon

Mon 9/7

9:30 am-2:22 pm

3 stops36h 52m

$663

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Sun 8/30

7:00 am-7:30 am

1 stop16h 30m

Shannon

Mon 9/7

9:30 am-9:35 am

1 stop32h 05m

$665

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, 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 39% 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

  • 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
11,414 reviews
Search American Airlines flights
United AirlinesPriceFrom $592Free CancellationRating
7.4
9,409 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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