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Cheap flights from Seattle to Shannon from $439

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 1/1. 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

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Seattle to Shannon

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
11:00 pm - 7:30 am
SEA
-
SNN
24h 30m
1 stop
United Airlines Logo
9:30 am - 4:07 pm
SNN
-
SEA
14h 37m
1 stop
$807United Airlines
Mon, Aug 31 - Tue, Sep 15
United Airlines Logo
11:04 pm - 10:15 am
SEA
-
SNN
27h 11m
2 stops
United Airlines Logo
9:30 am - 4:07 pm
SNN
-
SEA
14h 37m
1 stop
$807United Airlines
Mon, Aug 31 - Tue, Sep 15
United Airlines Logo
5:00 am - 7:30 am
SEA
-
SNN
18h 30m
2 stops
United Airlines Logo
9:30 am - 9:31 pm
SNN
-
SEA
20h 01m
2 stops
$823United Airlines
Mon, Aug 31 - Tue, Sep 15
United Airlines Logo
8:40 am - 10:15 am
SEA
-
SNN
17h 35m
2 stops
United Airlines Logo
9:30 am - 7:15 pm
SNN
-
SEA
17h 45m
1 stop
$830United Airlines
Tue, Sep 15 - Tue, Sep 22
Air France Logo
7:15 am - 11:10 am
SEA
-
SNN
19h 55m
1 stop
Air France Logo
1:05 pm - 11:20 pm
SNN
-
SEA
18h 15m
1 stop
$863Air France
Thu, Sep 10 - Thu, Sep 17
Lufthansa Logo
7:00 am - 7:30 am
SEA
-
SNN
16h 30m
1 stop
Lufthansa Logo
9:30 am - 10:43 pm
SNN
-
SEA
21h 13m
1 stop
$872Lufthansa
Thu, Aug 27 - Thu, Sep 3
KLM Logo
6:09 pm - 11:10 am
SEA
-
SNN
33h 01m
2 stops
KLM Logo
1:05 pm - 10:13 am
SNN
-
SEA
29h 08m
1 stop
$878KLM
Sun, Aug 30 - Sun, Sep 6
American Airlines Logo
8:24 am - 11:20 am
SEA
-
SNN
18h 56m
2 stops
American Airlines Logo
2:30 pm - 12:36 am
SNN
-
SEA
18h 06m
2 stops
$1,045American Airlines
Mon, Oct 5 - Wed, Oct 14
American Airlines Logo
1:30 pm - 8:35 pm
SEA
-
SNN
23h 05m
1 stop
American Airlines Logo
9:15 pm - 11:35 am
SNN
-
SEA
22h 20m
1 stop
$1,092American Airlines
Thu, Aug 27 - Thu, Sep 3
American Airlines Logo
1:35 pm - 4:10 pm
SEA
-
SNN
18h 35m
2 stops
American Airlines Logo
9:15 pm - 11:35 am
SNN
-
SEA
22h 20m
1 stop
$1,096American Airlines
Thu, Aug 27 - Thu, Sep 3

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United Airlines flights from Seattle to Shannon, Clare

Our best United Airlines deals on Seattle to Shannon, Clare flight tickets
United Airlines
Sep 15
SEA7:00 amSeattle/Tacoma Intl
16h 30m
1 stop
SNN7:30 amShannon
Sep 22
SNN9:30 amShannon
14h 37m
1 stop
SEA4:07 pmSeattle/Tacoma Intl
$830
United Airlines
Oct 5
SEA7:00 amSeattle/Tacoma Intl
19h 15m
2 stops
SNN10:15 amShannon
Oct 14
SNN12:30 pmShannon
16h 45m
2 stops
SEA9:15 pmSeattle/Tacoma Intl
$834
United Airlines
Sep 10
SEA8:40 amSeattle/Tacoma Intl
17h 35m
2 stops
SNN10:15 amShannon
Sep 17
SNN9:30 amShannon
17h 44m
1 stop
SEA7:14 pmSeattle/Tacoma Intl
$863

Lufthansa flights from Seattle to Shannon, Clare

Our best Lufthansa deals on Seattle to Shannon, Clare flight tickets
Lufthansa
Aug 29
SEA11:59 pmSeattle/Tacoma Intl
26h 16m
2 stops
SNN10:15 amShannon
Sep 5
SNN12:00 pmShannon
31h 55m
1 stop
SEA11:55 amSeattle/Tacoma Intl
$931
Lufthansa
Aug 16
SEA7:00 amSeattle/Tacoma Intl
16h 30m
1 stop
SNN7:30 amShannon
Aug 22
SNN12:00 pmShannon
31h 55m
1 stop
SEA11:55 amSeattle/Tacoma Intl
$1,152
Lufthansa
Aug 16
SEA7:00 amSeattle/Tacoma Intl
16h 30m
1 stop
SNN7:30 amShannon
Aug 22
SNN12:00 pmShannon
36h 59m
2 stops
SEA4:59 pmSeattle/Tacoma Intl
$1,263

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 August 4, 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 8/31

11:00 pm-7:30 am

1 stop24h 30m

Shannon

Tue 9/15

9:30 am-4:07 pm

1 stop14h 37m

$807

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Mon 8/31

11:04 pm-10:15 am

2 stops27h 11m

Shannon

Tue 9/15

9:30 am-4:07 pm

1 stop14h 37m

$807

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Mon 8/31

5:00 am-7:30 am

2 stops18h 30m

Shannon

Tue 9/15

9:30 am-9:31 pm

2 stops20h 01m

$823
Quickest round-trip

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Tue 9/15

8:40 am-10:15 am

2 stops17h 35m

Shannon

Tue 9/22

9:30 am-7:15 pm

1 stop17h 45m

$830

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Thu 9/10

7:15 am-11:10 am

1 stop19h 55m

Shannon

Thu 9/17

1:05 pm-11:20 pm

1 stop18h 15m

$863

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Thu 8/27

7:00 am-7:30 am

1 stop16h 30m

Shannon

Thu 9/3

9:30 am-10:43 pm

1 stop21h 13m

$872

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Sun 8/30

6:09 pm-11:10 am

2 stops33h 01m

Shannon

Sun 9/6

1:05 pm-10:13 am

1 stop29h 08m

$878

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Mon 10/5

8:24 am-11:20 am

2 stops18h 56m

Shannon

Wed 10/14

2:30 pm-12:36 am

2 stops18h 06m

$1,045

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Thu 8/27

1:30 pm-8:35 pm

1 stop23h 05m

Shannon

Thu 9/3

9:15 pm-11:35 am

1 stop22h 20m

$1,092

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Thu 8/27

1:35 pm-4:10 pm

2 stops18h 35m

Shannon

Thu 9/3

9:15 pm-11:35 am

1 stop22h 20m

$1,096

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

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

16h 30m

Direct flights

None
The fastest flight from Seattle to Shannon, Clare takes 16h 30m
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 16h 30m.

  • 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 $468Free CancellationRating
7.1
11,845 reviews
Search American Airlines flights
United AirlinesPriceFrom $592Free CancellationRating
7.4
10,059 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
Ennis
Adare
Lahinch
Bunratty
Tipperary

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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