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Cheap flights from Seattle to Shannon from €709

This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Shannon departing on 20/9. 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

Find the cheapest flights from Seattle to Shannon

Cheap return flights

Enter your travel dates to find the best prices.
United Airlines Logo
05:00 - 07:30SEA  Seattle/Tacoma Intl-SNN Shannon
18h 30m2 stops Denver Intl Chicago O'Hare Intl
United Airlines Logo
12:30 - 21:15SNN  Shannon-SEA Seattle/Tacoma Intl
16h 45m2 stops Newark Denver Intl
€709United Airlines
Sun, 20 Sep - Tue, 6 Oct
United Airlines Logo
08:40 - 10:15SEA  Seattle/Tacoma Intl-SNN Shannon
17h 35m2 stops Denver Intl Newark
United Airlines Logo
09:30 - 22:45SNN  Shannon-SEA Seattle/Tacoma Intl
21h 15m1 stop Chicago O'Hare Intl
€716United Airlines
Wed, 16 Sep - Wed, 23 Sep
United Airlines Logo
07:00 - 10:15SEA  Seattle/Tacoma Intl-SNN Shannon
19h 15m2 stops Chicago O'Hare Intl Newark
United Airlines Logo
12:30 - 09:36SNN  Shannon-SEA Seattle/Tacoma Intl
29h 06m2 stops Newark Chicago O'Hare Intl
€720United Airlines
Sun, 4 Oct - Tue, 13 Oct
United Airlines Logo
23:14 - 10:15SEA  Seattle/Tacoma Intl-SNN Shannon
27h 01m2 stops Washington, D.C. Dulles Intl Newark
United Airlines Logo
12:30 - 23:26SNN  Shannon-SEA Seattle/Tacoma Intl
18h 56m2 stops Newark San Francisco
€763United Airlines
Wed, 7 Oct - Wed, 14 Oct
United Airlines Logo
07:00 - 10:15SEA  Seattle/Tacoma Intl-SNN Shannon
19h 15m1 stop Newark
United Airlines Logo
12:30 - 21:55SNN  Shannon-SEA Seattle/Tacoma Intl
17h 25m1 stop Newark
€768United Airlines
Mon, 28 Sep - Mon, 5 Oct
United Airlines Logo
23:13 - 10:15SEA  Seattle/Tacoma Intl-SNN Shannon
27h 02m2 stops Chicago O'Hare Intl Newark
United Airlines Logo
12:30 - 21:55SNN  Shannon-SEA Seattle/Tacoma Intl
17h 25m1 stop Newark
€772United Airlines
Mon, 28 Sep - Mon, 5 Oct
United Airlines Logo
18:43 - 10:15SEA  Seattle/Tacoma Intl-SNN Shannon
55h 32m3 stops Los Angeles Los Angeles Orlando Newark
United Airlines Logo
12:30 - 22:59SNN  Shannon-SEA Seattle/Tacoma Intl
18h 29m2 stops Newark Denver Intl
€781United Airlines
Thu, 1 Oct - Thu, 15 Oct
KLM Logo
11:50 - 11:10SEA  Seattle/Tacoma Intl-SNN Shannon
15h 20m1 stop New York John F Kennedy Intl
KLM Logo
13:05 - 23:20SNN  Shannon-SEA Seattle/Tacoma Intl
18h 15m1 stop New York John F Kennedy Intl
€788KLM
Sat, 12 Sep - Sat, 19 Sep
Multiple Airlines Logo
10:50 - 20:25SEA  Seattle/Tacoma Intl-SNN Shannon
25h 35m3 stops Vancouver Intl Calgary London Heathrow
Multiple Airlines Logo
08:00 - 20:40SNN  Shannon-SEA Seattle/Tacoma Intl
20h 40m2 stops London Stansted Reykjavik Keflavik Intl
€794Multiple Airlines
Sun, 20 Sep - Tue, 6 Oct
Multiple Airlines Logo
10:50 - 20:30SEA  Seattle/Tacoma Intl-SNN Shannon
25h 40m3 stops Vancouver Intl Calgary London Heathrow
Multiple Airlines Logo
14:35 - 17:00SNN  Shannon-SEA Seattle/Tacoma Intl
34h 25m2 stops London Stansted Reykjavik Keflavik Intl
€796Multiple Airlines
Wed, 23 Sep - Tue, 8 Dec

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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
20 Sept
SEA05:00Seattle/Tacoma Intl
18h 30m
2 stops
SNN07:30Shannon
6 Oct
SNN12:30Shannon
16h 45m
2 stops
SEA21:15Seattle/Tacoma Intl
€709
United Airlines
16 Sept
SEA08:40Seattle/Tacoma Intl
17h 35m
2 stops
SNN10:15Shannon
23 Sept
SNN09:30Shannon
21h 15m
1 stop
SEA22:45Seattle/Tacoma Intl
€716
United Airlines
4 Oct
SEA07:00Seattle/Tacoma Intl
19h 15m
2 stops
SNN10:15Shannon
13 Oct
SNN12:30Shannon
29h 06m
2 stops
SEA09:36Seattle/Tacoma Intl
€720

British Airways flights from Seattle to Shannon, Clare

Our best British Airways deals on Seattle to Shannon, Clare flight tickets
British Airways
14 Dec
SEA16:45Seattle/Tacoma Intl
18h 40m
2 stops
SNN19:25Shannon
21 Dec
SNN20:05Shannon
23h 20m
1 stop
SEA11:25Seattle/Tacoma Intl
€869
British Airways
14 Dec
SEA06:14Seattle/Tacoma Intl
21h 16m
2 stops
SNN11:30Shannon
21 Dec
SNN20:05Shannon
23h 20m
1 stop
SEA11:25Seattle/Tacoma Intl
€870
British Airways
21 Sept
SEA13:30Seattle/Tacoma Intl
13h 50m
1 stop
SNN11:20Shannon
28 Sept
SNN21:15Shannon
27h 55m
2 stops
SEA17:10Seattle/Tacoma Intl
€877

momondo Fare Finder

 
Customise 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 13,528 searches. Data last updated 18 August 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 return flight

SeattleShannon

SEA Seattle/Tacoma Intl - SNN Shannon

SEASNN

Seattle/Tacoma Intl

Sun 20/9

05:00-07:30

2 stops18h 30m

Shannon

Tue 6/10

12:30-21:15

2 stops16h 45m

€709

SeattleShannon

SEA Seattle/Tacoma Intl - SNN Shannon

SEASNN

Seattle/Tacoma Intl

Wed 16/9

08:40-10:15

2 stops17h 35m

Shannon

Wed 23/9

09:30-22:45

1 stop21h 15m

€716

SeattleShannon

SEA Seattle/Tacoma Intl - SNN Shannon

SEASNN

Seattle/Tacoma Intl

Sun 4/10

07:00-10:15

2 stops19h 15m

Shannon

Tue 13/10

12:30-09:36

2 stops29h 06m

€720

SeattleShannon

SEA Seattle/Tacoma Intl - SNN Shannon

SEASNN

Seattle/Tacoma Intl

Wed 7/10

23:14-10:15

2 stops27h 01m

Shannon

Wed 14/10

12:30-23:26

2 stops18h 56m

€763

SeattleShannon

SEA Seattle/Tacoma Intl - SNN Shannon

SEASNN

Seattle/Tacoma Intl

Mon 28/9

07:00-10:15

1 stop19h 15m

Shannon

Mon 5/10

12:30-21:55

1 stop17h 25m

€768

SeattleShannon

SEA Seattle/Tacoma Intl - SNN Shannon

SEASNN

Seattle/Tacoma Intl

Mon 28/9

23:13-10:15

2 stops27h 02m

Shannon

Mon 5/10

12:30-21:55

1 stop17h 25m

€772

SeattleShannon

SEA Seattle/Tacoma Intl - SNN Shannon

SEASNN

Seattle/Tacoma Intl

Thu 1/10

18:43-10:15

3 stops55h 32m

Shannon

Thu 15/10

12:30-22:59

2 stops18h 29m

€781
Fastest return journey

SeattleShannon

SEA Seattle/Tacoma Intl - SNN Shannon

SEASNN

Seattle/Tacoma Intl

Sat 12/9

11:50-11:10

1 stop15h 20m

Shannon

Sat 19/9

13:05-23:20

1 stop18h 15m

€788

SeattleShannon

SEA Seattle/Tacoma Intl - SNN Shannon

SEASNN

Seattle/Tacoma Intl

Sun 20/9

10:50-20:25

3 stops25h 35m

Shannon

Tue 6/10

08:00-20:40

2 stops20h 40m

€794

SeattleShannon

SEA Seattle/Tacoma Intl - SNN Shannon

SEASNN

Seattle/Tacoma Intl

Wed 23/9

10:50-20:30

3 stops25h 40m

Shannon

Tue 8/12

14:35-17:00

2 stops34h 25m

€796

Flights are sorted by cheapest return flights first.

Showing 1-10 of 13 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?

Aer Lingus, British Airways, and United 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 return 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

Best price found

€3,214

Fastest flight time

12h 48m

Direct flights

None
The best one-way flight to Shannon, Clare from Seattle in the past 72 hours is €3,214. The best return flight deal from Seattle to Shannon, Clare found on momondo in the last 72 hours is €709.
The fastest flight from Seattle to Shannon, Clare takes 12h 48m
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?

    Shannon is 7206.9 km away from Seattle/Tacoma Intl. By plane, this route typically takes 12h 48m.

  • 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 old do you have to be to fly from Seattle/Tacoma Intl Airport to Shannon Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Seattle/Tacoma Intl Airport to Shannon Airport.

  • What documentation or ID do you need to fly to Shannon Airport?

    The required travel and health documents for your Shannon Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's licence and a passport valid for six months after your intended arrival at Shannon Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Travelling to a place near Shannon?

Book flights to Shannon if you plan to visit one of these locations
Limerick
Ennis
Tipperary
Killaloe
Lahinch
Nenagh
Adare
Bunratty

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Shannon?

Finding the right flight to Shannon from Seattle is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Shannon quick and easy, saving you time and money.

Can I find flights from Seattle to Shannon with flexible booking policies on momondo?

All flight searches from Seattle to Shannon on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Seattle to Shannon?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Seattle to Shannon.

I’m not ready to book a flight from Seattle to Shannon right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Seattle to Shannon now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Shannon and let you know when they change.

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