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Cheap flights from Seattle to Shannon from $399

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 7/25. 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 - 11:27 pm
SNN
-
SEA
18h 57m
2 stops
$493United Airlines
Tue, Apr 21 - Tue, Apr 28
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
$539Delta
Tue, Jul 28 - Thu, Aug 13
United Airlines Logo
7:40 am - 10:15 am
SEA
-
SNN
18h 35m
2 stops
United Airlines Logo
9:30 am - 10:29 pm
SNN
-
SEA
20h 59m
1 stop
$543United Airlines
Tue, Jul 28 - Thu, Aug 13
KLM Logo
9:55 pm - 11:10 am
SEA
-
SNN
29h 15m
1 stop
KLM Logo
1:05 pm - 10:16 pm
SNN
-
SEA
17h 11m
1 stop
$544KLM
Sat, Aug 1 - Thu, Aug 13
Delta Logo
5:45 am - 11:10 am
SEA
-
SNN
45h 25m
2 stops
Delta Logo
1:05 pm - 9:02 am
SNN
-
SEA
27h 57m
2 stops
$548Delta
Sat, Aug 1 - Tue, Aug 11
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
$589United Airlines
Thu, Jul 30 - Thu, Aug 13
United Airlines Logo
10:52 am - 7:30 am
SEA
-
SNN
12h 38m
1 stop
United Airlines Logo
9:30 am - 9:12 pm
SNN
-
SEA
19h 42m
2 stops
$593United Airlines
Thu, Jul 30 - Thu, Aug 13
Delta Logo
3:30 pm - 11:10 am
SEA
-
SNN
35h 40m
1 stop
Delta Logo
1:05 pm - 10:16 pm
SNN
-
SEA
17h 11m
1 stop
$595Delta
Fri, Jul 31 - Thu, Aug 13
Delta Logo
8:40 am - 11:10 am
SEA
-
SNN
18h 30m
2 stops
Delta Logo
1:05 pm - 10:05 pm
SNN
-
SEA
17h 00m
2 stops
$598Delta
Wed, Jul 29 - Tue, Aug 11
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
$599United Airlines
Wed, Jul 29 - Sat, Aug 15

Delta flights from Seattle to Shannon, Clare

Our best Delta deals on Seattle to Shannon, Clare flight tickets
Delta
Jul 28
SEA11:15 amSeattle/Tacoma Intl
15h 55m
1 stop
SNN11:10 amShannon
Aug 12
SNN1:05 pmShannon
17h 11m
1 stop
SEA10:16 pmSeattle/Tacoma Intl
$539
Delta
Aug 1
SEA3:30 pmSeattle/Tacoma Intl
35h 40m
1 stop
SNN11:10 amShannon
Aug 12
SNN1:05 pmShannon
17h 11m
1 stop
SEA10:16 pmSeattle/Tacoma Intl
$544
Delta
Aug 1
SEA5:45 amSeattle/Tacoma Intl
45h 25m
2 stops
SNN11:10 amShannon
Aug 11
SNN1:05 pmShannon
27h 57m
2 stops
SEA9:02 amSeattle/Tacoma Intl
$548

Aer Lingus flights from Seattle to Shannon, Clare

Our best Aer Lingus deals on Seattle to Shannon, Clare flight tickets
Aer Lingus
Mar 23
SEA9:05 pmSeattle/Tacoma Intl
31h 25m
2 stops
SNN11:30 amShannon
Mar 30
SNN9:15 pmShannon
51h 55m
2 stops
SEA5:10 pmSeattle/Tacoma Intl
$647
Aer Lingus
Feb 25
SEA8:05 pmSeattle/Tacoma Intl
31h 25m
2 stops
SNN11:30 amShannon
Mar 4
SNN7:50 amShannon
18h 30m
2 stops
SEA6:20 pmSeattle/Tacoma Intl
$657

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 9, 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 4/21

12:08 pm-10:15 am

1 stop14h 07m

Shannon

Tue 4/28

12:30 pm-11:27 pm

2 stops18h 57m

$493

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Tue 7/28

7:20 am-11:10 am

1 stop19h 50m

Shannon

Thu 8/13

1:05 pm-10:16 pm

1 stop17h 11m

$539

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Tue 7/28

7:40 am-10:15 am

2 stops18h 35m

Shannon

Thu 8/13

9:30 am-10:29 pm

1 stop20h 59m

$543

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Sat 8/1

9:55 pm-11:10 am

1 stop29h 15m

Shannon

Thu 8/13

1:05 pm-10:16 pm

1 stop17h 11m

$544

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Sat 8/1

5:45 am-11:10 am

2 stops45h 25m

Shannon

Tue 8/11

1:05 pm-9:02 am

2 stops27h 57m

$548

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Thu 7/30

10:52 am-7:30 am

1 stop12h 38m

Shannon

Thu 8/13

9:30 am-11:59 pm

1 stop22h 29m

$589

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Thu 7/30

10:52 am-7:30 am

1 stop12h 38m

Shannon

Thu 8/13

9:30 am-9:12 pm

2 stops19h 42m

$593

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Fri 7/31

3:30 pm-11:10 am

1 stop35h 40m

Shannon

Thu 8/13

1:05 pm-10:16 pm

1 stop17h 11m

$595

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Wed 7/29

8:40 am-11:10 am

2 stops18h 30m

Shannon

Tue 8/11

1:05 pm-10:05 pm

2 stops17h 00m

$598

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Wed 7/29

10:52 am-7:30 am

1 stop12h 38m

Shannon

Sat 8/15

9:30 am-11:59 pm

1 stop22h 29m

$599

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, Delta, and KLM are the most popular carriers 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 35% 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

15h 20m

Direct flights

None
The fastest flight from Seattle to Shannon, Clare takes 15h 20m
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 15h 20m.

  • 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
11,258 reviews
Search American Airlines flights
United AirlinesPriceFrom $593Free CancellationRating
7.4
9,259 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.

An easier way to manage your Shannon, Clare trip

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