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Cheap flights from Seattle to Shannon from $255

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
12:08 pm - 10:15 am
SEA
-
SNN
14h 07m
1 stop
United Airlines Logo
12:30 pm - 9:06 pm
SNN
-
SEA
16h 36m
2 stops
$577United Airlines
mar., avr. 14 - mar., avr. 21
United Airlines Logo
7:00 am - 10:15 am
SEA
-
SNN
19h 15m
2 stops
United Airlines Logo
12:30 pm - 11:12 pm
SNN
-
SEA
18h 42m
2 stops
$580United Airlines
mar., avr. 14 - mar., avr. 21
United Airlines Logo
11:56 pm - 7:30 am
SEA
-
SNN
23h 34m
2 stops
United Airlines Logo
12:30 pm - 11:11 pm
SNN
-
SEA
18h 41m
2 stops
$593United Airlines
ven., août 14 - jeu., août 27
Aer Lingus Logo
7:10 pm - 8:35 pm
SEA
-
SNN
17h 25m
2 stops
Aer Lingus Logo
9:15 pm - 5:10 pm
SNN
-
SEA
27h 55m
2 stops
$639Aer Lingus
mer., août 19 - lun., août 31
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
$643United Airlines
sam., août 15 - sam., août 22
United Airlines Logo
10:47 pm - 7:30 am
SEA
-
SNN
24h 43m
1 stop
United Airlines Logo
9:30 am - 6:59 pm
SNN
-
SEA
17h 29m
1 stop
$645United Airlines
mer., août 19 - lun., août 31
United Airlines Logo
5:00 pm - 7:30 am
SEA
-
SNN
30h 30m
1 stop
United Airlines Logo
9:30 am - 7:08 pm
SNN
-
SEA
17h 38m
2 stops
$650United Airlines
mer., août 19 - lun., août 31
Aer Lingus Logo
9:05 pm - 7:25 pm
SEA
-
SNN
15h 20m
2 stops
Aer Lingus Logo
9:15 pm - 5:10 pm
SNN
-
SEA
51h 55m
2 stops
$651Aer Lingus
mer., mars 25 - mer., avr. 1
United Airlines Logo
8:55 am - 10:15 am
SEA
-
SNN
17h 20m
2 stops
United Airlines Logo
12:30 pm - 11:27 pm
SNN
-
SEA
18h 57m
2 stops
$653United Airlines
mar., avr. 14 - sam., avr. 25
Lufthansa Logo
7:05 pm - 10:15 am
SEA
-
SNN
31h 10m
2 stops
Lufthansa Logo
9:30 am - 3:39 pm
SNN
-
SEA
14h 09m
1 stop
$663Lufthansa
lun., mai 18 - ven., juin 12

United Airlines flights from Seattle to Shannon, Clare

Our best United Airlines deals on Seattle to Shannon, Clare flight tickets
United Airlines
Apr 14
SEA12:08 pmSeattle/Tacoma Intl
14h 07m
1 stop
SNN10:15 amShannon
Apr 21
SNN12:30 pmShannon
16h 36m
2 stops
SEA9:06 pmSeattle/Tacoma Intl
$577
United Airlines
Apr 14
SEA7:00 amSeattle/Tacoma Intl
19h 15m
2 stops
SNN10:15 amShannon
Apr 21
SNN12:30 pmShannon
18h 42m
2 stops
SEA11:12 pmSeattle/Tacoma Intl
$580
United Airlines
Aug 14
SEA11:56 pmSeattle/Tacoma Intl
23h 34m
2 stops
SNN7:30 amShannon
Aug 27
SNN12:30 pmShannon
18h 41m
2 stops
SEA11:11 pmSeattle/Tacoma Intl
$593

Lufthansa flights from Seattle to Shannon, Clare

Our best Lufthansa deals on Seattle to Shannon, Clare flight tickets
Lufthansa
May 18
SEA7:05 pmSeattle/Tacoma Intl
31h 10m
2 stops
SNN10:15 amShannon
Jun 12
SNN9:30 amShannon
14h 09m
1 stop
SEA3:39 pmSeattle/Tacoma Intl
$663
Lufthansa
Aug 14
SEA2:10 pmSeattle/Tacoma Intl
13h 05m
1 stop
SNN11:15 amShannon
Aug 27
SNN10:55 amShannon
33h 00m
1 stop
SEA11:55 amSeattle/Tacoma Intl
$669
Lufthansa
May 18
SEA11:00 pmSeattle/Tacoma Intl
27h 15m
1 stop
SNN10:15 amShannon
Jun 12
SNN9:30 amShannon
17h 36m
1 stop
SEA7:06 pmSeattle/Tacoma Intl
$765

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 mars 1, 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

mar. 4/14

12:08 pm-10:15 am

1 stop14h 07m

Shannon

mar. 4/21

12:30 pm-9:06 pm

2 stops16h 36m

$577

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

mar. 4/14

7:00 am-10:15 am

2 stops19h 15m

Shannon

mar. 4/21

12:30 pm-11:12 pm

2 stops18h 42m

$580

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

ven. 8/14

11:56 pm-7:30 am

2 stops23h 34m

Shannon

jeu. 8/27

12:30 pm-11:11 pm

2 stops18h 41m

$593

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

mer. 8/19

7:10 pm-8:35 pm

2 stops17h 25m

Shannon

lun. 8/31

9:15 pm-5:10 pm

2 stops27h 55m

$639

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

sam. 8/15

5:00 am-10:15 am

2 stops21h 15m

Shannon

sam. 8/22

12:30 pm-1:56 pm

3 stops33h 26m

$643

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

mer. 8/19

10:47 pm-7:30 am

1 stop24h 43m

Shannon

lun. 8/31

9:30 am-6:59 pm

1 stop17h 29m

$645

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

mer. 8/19

5:00 pm-7:30 am

1 stop30h 30m

Shannon

lun. 8/31

9:30 am-7:08 pm

2 stops17h 38m

$650

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

mer. 3/25

9:05 pm-7:25 pm

2 stops15h 20m

Shannon

mer. 4/1

9:15 pm-5:10 pm

2 stops51h 55m

$651

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

mar. 4/14

8:55 am-10:15 am

2 stops17h 20m

Shannon

sam. 4/25

12:30 pm-11:27 pm

2 stops18h 57m

$653

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

lun. 5/18

7:05 pm-10:15 am

2 stops31h 10m

Shannon

ven. 6/12

9:30 am-3:39 pm

1 stop14h 09m

$663

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 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 37% 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
11,370 reviews
Search American Airlines flights
United AirlinesPriceFrom $595Free CancellationRating
7.4
9,371 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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