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Cheap flights from Seattle to Shannon from $250

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 11/12. 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 - 10:15 amSEA  Seattle/Tacoma Intl-SNN Shannon
27h 15m2 stops Chicago O'Hare Intl Newark
United Airlines Logo
9:30 am - 4:07 pmSNN  Shannon-SEA Seattle/Tacoma Intl
14h 37m1 stop Chicago O'Hare Intl
$804United Airlines
Sat, Sep 5 - Fri, Sep 18
United Airlines Logo
11:00 pm - 7:30 amSEA  Seattle/Tacoma Intl-SNN Shannon
24h 30m1 stop Chicago O'Hare Intl
United Airlines Logo
9:30 am - 4:07 pmSNN  Shannon-SEA Seattle/Tacoma Intl
14h 37m1 stop Chicago O'Hare Intl
$804United Airlines
Sat, Sep 5 - Fri, Sep 18
KLM Logo
10:40 pm - 11:10 amSEA  Seattle/Tacoma Intl-SNN Shannon
28h 30m1 stop New York John F Kennedy Intl
KLM Logo
1:05 pm - 11:59 pmSNN  Shannon-SEA Seattle/Tacoma Intl
18h 54m2 stops New York John F Kennedy Intl Salt Lake City
$804KLM
Sat, Sep 5 - Fri, Sep 18
KLM Logo
10:40 pm - 11:10 amSEA  Seattle/Tacoma Intl-SNN Shannon
28h 30m1 stop New York John F Kennedy Intl
KLM Logo
1:05 pm - 8:21 pmSNN  Shannon-SEA Seattle/Tacoma Intl
15h 16m1 stop New York John F Kennedy Intl
$804KLM
Sat, Sep 5 - Fri, Sep 18
United Airlines Logo
11:59 pm - 10:15 amSEA  Seattle/Tacoma Intl-SNN Shannon
26h 16m2 stops Houston George Bush Intcntl Newark
United Airlines Logo
9:30 am - 4:07 pmSNN  Shannon-SEA Seattle/Tacoma Intl
14h 37m1 stop Chicago O'Hare Intl
$817United Airlines
Sat, Sep 5 - Fri, Sep 18
KLM Logo
1:25 pm - 11:10 amSEA  Seattle/Tacoma Intl-SNN Shannon
37h 45m2 stops Salt Lake City New York John F Kennedy Intl
KLM Logo
1:05 pm - 11:59 pmSNN  Shannon-SEA Seattle/Tacoma Intl
18h 54m2 stops New York John F Kennedy Intl Salt Lake City
$821KLM
Sat, Sep 5 - Fri, Sep 18
KLM Logo
1:25 pm - 11:10 amSEA  Seattle/Tacoma Intl-SNN Shannon
37h 45m2 stops Salt Lake City New York John F Kennedy Intl
KLM Logo
1:05 pm - 4:50 pmSNN  Shannon-SEA Seattle/Tacoma Intl
35h 45m2 stops New York John F Kennedy Intl Salt Lake City
$849KLM
Sat, Sep 5 - Fri, Sep 18
United Airlines Logo
10:42 am - 10:15 amSEA  Seattle/Tacoma Intl-SNN Shannon
15h 33m2 stops Chicago O'Hare Intl Newark
United Airlines Logo
9:30 am - 11:04 pmSNN  Shannon-SEA Seattle/Tacoma Intl
21h 34m2 stops Chicago O'Hare Intl Denver Intl
$855United Airlines
Sat, Sep 5 - Fri, Sep 18
United Airlines Logo
10:42 am - 7:30 amSEA  Seattle/Tacoma Intl-SNN Shannon
12h 48m1 stop Chicago O'Hare Intl
United Airlines Logo
9:30 am - 4:07 pmSNN  Shannon-SEA Seattle/Tacoma Intl
14h 37m1 stop Chicago O'Hare Intl
$863United Airlines
Fri, Sep 11 - Fri, Sep 18
United Airlines Logo
7:00 am - 7:30 amSEA  Seattle/Tacoma Intl-SNN Shannon
16h 30m1 stop Chicago O'Hare Intl
United Airlines Logo
9:30 am - 10:45 pmSNN  Shannon-SEA Seattle/Tacoma Intl
21h 15m1 stop Chicago O'Hare Intl
$863United Airlines
Sat, Sep 5 - Fri, Sep 18

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Air Canada flights from Seattle to Shannon, Clare

Our best Air Canada deals on Seattle to Shannon, Clare flight tickets
Air Canada
Dec 14
SEA8:15 amSeattle/Tacoma Intl
24h 30m
2 stops
SNN4:45 pmShannon
Dec 21
SNN8:05 pmShannon
32h 54m
2 stops
SEA8:59 pmSeattle/Tacoma Intl
$981
Air Canada
Dec 14
SEA8:15 amSeattle/Tacoma Intl
24h 30m
3 stops
SNN4:45 pmShannon
Dec 21
SNN7:50 amShannon
33h 37m
3 stops
SEA9:27 amSeattle/Tacoma Intl
$1,031
Air Canada
Dec 14
SEA10:10 amSeattle/Tacoma Intl
22h 35m
3 stops
SNN4:45 pmShannon
Dec 21
SNN7:50 amShannon
33h 37m
3 stops
SEA9:27 amSeattle/Tacoma Intl
$1,039

British Airways flights from Seattle to Shannon, Clare

Our best British Airways deals on Seattle to Shannon, Clare flight tickets
British Airways
Dec 14
SEA4:45 pmSeattle/Tacoma Intl
18h 40m
2 stops
SNN7:25 pmShannon
Dec 21
SNN8:05 pmShannon
23h 20m
1 stop
SEA11:25 amSeattle/Tacoma Intl
$1,007
British Airways
Sep 17
SEA8:20 pmSeattle/Tacoma Intl
16h 15m
1 stop
SNN8:35 pmShannon
Sep 24
SNN9:15 pmShannon
22h 20m
1 stop
SEA11:35 amSeattle/Tacoma Intl
$1,079

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 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

Cheapest round-trip

SeattleShannon

SEA Seattle/Tacoma Intl - SNN Shannon

SEASNN

Seattle/Tacoma Intl

Sat 9/5

11:00 pm-10:15 am

2 stops27h 15m

Shannon

Fri 9/18

9:30 am-4:07 pm

1 stop14h 37m

$804

SeattleShannon

SEA Seattle/Tacoma Intl - SNN Shannon

SEASNN

Seattle/Tacoma Intl

Sat 9/5

11:00 pm-7:30 am

1 stop24h 30m

Shannon

Fri 9/18

9:30 am-4:07 pm

1 stop14h 37m

$804

SeattleShannon

SEA Seattle/Tacoma Intl - SNN Shannon

SEASNN

Seattle/Tacoma Intl

Sat 9/5

10:40 pm-11:10 am

1 stop28h 30m

Shannon

Fri 9/18

1:05 pm-11:59 pm

2 stops18h 54m

$804

SeattleShannon

SEA Seattle/Tacoma Intl - SNN Shannon

SEASNN

Seattle/Tacoma Intl

Sat 9/5

10:40 pm-11:10 am

1 stop28h 30m

Shannon

Fri 9/18

1:05 pm-8:21 pm

1 stop15h 16m

$804

SeattleShannon

SEA Seattle/Tacoma Intl - SNN Shannon

SEASNN

Seattle/Tacoma Intl

Sat 9/5

11:59 pm-10:15 am

2 stops26h 16m

Shannon

Fri 9/18

9:30 am-4:07 pm

1 stop14h 37m

$817

SeattleShannon

SEA Seattle/Tacoma Intl - SNN Shannon

SEASNN

Seattle/Tacoma Intl

Sat 9/5

1:25 pm-11:10 am

2 stops37h 45m

Shannon

Fri 9/18

1:05 pm-11:59 pm

2 stops18h 54m

$821

SeattleShannon

SEA Seattle/Tacoma Intl - SNN Shannon

SEASNN

Seattle/Tacoma Intl

Sat 9/5

1:25 pm-11:10 am

2 stops37h 45m

Shannon

Fri 9/18

1:05 pm-4:50 pm

2 stops35h 45m

$849

SeattleShannon

SEA Seattle/Tacoma Intl - SNN Shannon

SEASNN

Seattle/Tacoma Intl

Sat 9/5

10:42 am-10:15 am

2 stops15h 33m

Shannon

Fri 9/18

9:30 am-11:04 pm

2 stops21h 34m

$855
Quickest round-trip

SeattleShannon

SEA Seattle/Tacoma Intl - SNN Shannon

SEASNN

Seattle/Tacoma Intl

Fri 9/11

10:42 am-7:30 am

1 stop12h 48m

Shannon

Fri 9/18

9:30 am-4:07 pm

1 stop14h 37m

$863

SeattleShannon

SEA Seattle/Tacoma Intl - SNN Shannon

SEASNN

Seattle/Tacoma Intl

Sat 9/5

7:00 am-7:30 am

1 stop16h 30m

Shannon

Fri 9/18

9:30 am-10:45 pm

1 stop21h 15m

$863

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?

British Airways and American Airlines are the most popular carriers 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

13h 15m

Direct flights

None
The fastest flight from Seattle to Shannon, Clare takes 13h 15m
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 13h 15m.

  • 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
11,892 reviews
Search American Airlines flights
United AirlinesPriceFrom $592Free CancellationRating
7.4
10,089 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
Bunratty
Lahinch
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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