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Cheap flights from St. Louis to Shannon from €284

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Shannon departing on 1/9. 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
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Find the cheapest flights from St. Louis to Shannon

Cheap return flights

Enter your travel dates to find the best prices.
Lufthansa Logo
08:50 - 07:30
STL
-
SNN
16h 40m
1 stop
Lufthansa Logo
12:30 - 23:38
SNN
-
STL
17h 08m
1 stop
€664Lufthansa
Wed, 9 Sep - Tue, 22 Sep
United Airlines Logo
08:00 - 07:30
STL
-
SNN
17h 30m
1 stop
United Airlines Logo
12:30 - 23:38
SNN
-
STL
17h 08m
1 stop
€665United Airlines
Wed, 9 Sep - Tue, 22 Sep
United Airlines Logo
08:50 - 07:30
STL
-
SNN
16h 40m
1 stop
United Airlines Logo
12:30 - 12:40
SNN
-
STL
30h 10m
2 stops
€669United Airlines
Wed, 9 Sep - Tue, 22 Sep
Lufthansa Logo
16:50 - 10:15
STL
-
SNN
11h 25m
1 stop
Lufthansa Logo
12:30 - 23:38
SNN
-
STL
17h 08m
1 stop
€672Lufthansa
Sun, 16 Aug - Fri, 28 Aug
United Airlines Logo
16:50 - 10:15
STL
-
SNN
11h 25m
1 stop
United Airlines Logo
09:30 - 15:38
SNN
-
STL
12h 08m
1 stop
€672United Airlines
Sun, 16 Aug - Fri, 28 Aug
United Airlines Logo
16:50 - 10:15
STL
-
SNN
11h 25m
1 stop
United Airlines Logo
12:30 - 22:59
SNN
-
STL
16h 29m
2 stops
€677United Airlines
Sun, 16 Aug - Fri, 28 Aug
Lufthansa Logo
12:20 - 10:15
STL
-
SNN
15h 55m
1 stop
Lufthansa Logo
12:30 - 11:03
SNN
-
STL
28h 33m
1 stop
€712Lufthansa
Mon, 5 Oct - Wed, 14 Oct
Lufthansa Logo
16:50 - 10:15
STL
-
SNN
11h 25m
1 stop
Lufthansa Logo
12:30 - 23:38
SNN
-
STL
17h 08m
1 stop
€714Lufthansa
Sun, 16 Aug - Fri, 28 Aug
United Airlines Logo
08:00 - 07:30
STL
-
SNN
17h 30m
1 stop
United Airlines Logo
12:30 - 23:38
SNN
-
STL
17h 08m
1 stop
€715United Airlines
Sun, 23 Aug - Wed, 9 Sep
United Airlines Logo
12:59 - 10:15
STL
-
SNN
15h 16m
2 stops
United Airlines Logo
12:30 - 22:00
SNN
-
STL
15h 30m
2 stops
€719United Airlines
Sun, 16 Aug - Fri, 28 Aug

Lufthansa flights from St. Louis to Shannon, Clare

Our best Lufthansa deals on St. Louis to Shannon, Clare flight tickets
Lufthansa
9 Sept
STL08:50Lambert-St Louis
16h 40m
1 stop
SNN07:30Shannon
22 Sept
SNN12:30Shannon
17h 08m
1 stop
STL23:38Lambert-St Louis
€664
Lufthansa
16 Aug
STL16:50Lambert-St Louis
11h 25m
1 stop
SNN10:15Shannon
28 Aug
SNN12:30Shannon
17h 08m
1 stop
STL23:38Lambert-St Louis
€672
Lufthansa
5 Oct
STL12:20Lambert-St Louis
15h 55m
1 stop
SNN10:15Shannon
14 Oct
SNN12:30Shannon
28h 33m
1 stop
STL11:03Lambert-St Louis
€712

United Airlines flights from St. Louis to Shannon, Clare

Our best United Airlines deals on St. Louis to Shannon, Clare flight tickets
United Airlines
9 Sept
STL08:00Lambert-St Louis
17h 30m
1 stop
SNN07:30Shannon
22 Sept
SNN12:30Shannon
17h 08m
1 stop
STL23:38Lambert-St Louis
€665
United Airlines
9 Sept
STL08:50Lambert-St Louis
16h 40m
1 stop
SNN07:30Shannon
22 Sept
SNN12:30Shannon
30h 10m
2 stops
STL12:40Lambert-St Louis
€669
United Airlines
16 Aug
STL16:50Lambert-St Louis
11h 25m
1 stop
SNN10:15Shannon
28 Aug
SNN09:30Shannon
12h 08m
1 stop
STL15:38Lambert-St Louis
€672

momondo Fare Finder

 
Customise your flight search to find flights from St. Louis 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 6 June 2026.
Use the filters below to find and compare flights from St. Louis to Shannon, Clare that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Wed 9/9

08:50-07:30

1 stop16h 40m

Shannon

Tue 22/9

12:30-23:38

1 stop17h 08m

€664

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Wed 9/9

08:00-07:30

1 stop17h 30m

Shannon

Tue 22/9

12:30-23:38

1 stop17h 08m

€665

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Wed 9/9

08:50-07:30

1 stop16h 40m

Shannon

Tue 22/9

12:30-12:40

2 stops30h 10m

€669

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Sun 16/8

16:50-10:15

1 stop11h 25m

Shannon

Fri 28/8

12:30-23:38

1 stop17h 08m

€672
Fastest return journey

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Sun 16/8

16:50-10:15

1 stop11h 25m

Shannon

Fri 28/8

09:30-15:38

1 stop12h 08m

€672

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Sun 16/8

16:50-10:15

1 stop11h 25m

Shannon

Fri 28/8

12:30-22:59

2 stops16h 29m

€677

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Mon 5/10

12:20-10:15

1 stop15h 55m

Shannon

Wed 14/10

12:30-11:03

1 stop28h 33m

€712

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Sun 16/8

16:50-10:15

1 stop11h 25m

Shannon

Fri 28/8

12:30-23:38

1 stop17h 08m

€714

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Sun 23/8

08:00-07:30

1 stop17h 30m

Shannon

Wed 9/9

12:30-23:38

1 stop17h 08m

€715

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Sun 16/8

12:59-10:15

2 stops15h 16m

Shannon

Fri 28/8

12:30-22:00

2 stops15h 30m

€719

Flights are sorted by cheapest return flights first.

Showing 1-10 of 19 resultsSorted by cheapest first
1
2

See travel insights to Shannon from

How to get the cheapest flight ticket from St. Louis 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 Lambert-St Louis to Shannon?

United Airlines is the most popular carrier operating from Lambert-St Louis to Shannon

When to book flights from St. Louis to Shannon, Clare

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Shannon, Clare according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap St. Louis to Shannon, Clare (STL to SNN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Shannon, Clare

Fastest flight time

10h 08m

Direct flights

None
The fastest flight from St. Louis to Shannon, Clare takes 10h 08m
There are no direct flights from St. Louis to Shannon, Clare. There are no popular flight routes from St. Louis to Shannon, Clare.
Search flight deals

Frequently asked questions about flying from St. Louis to Shannon, Clare

  • How far is Lambert-St Louis to Shannon by plane?

    Shannon is 6155.2 km away from Lambert-St Louis. 10h 08m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Shannon Airport?

    Prices for flights from Lambert-St Louis Airport to Shannon Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Lambert-St Louis 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 stopovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Shannon Airport.

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

    The travel and health documents required for your trip to Shannon Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s licence, and a passport valid for six-months after you plan to arrive at Shannon Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Travelling to a place near Shannon?

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

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Shannon?

Finding the right flight to Shannon from St. Louis 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 St. Louis to Shannon with flexible booking policies on momondo?

momondo does allow users to show only those flights to Shannon from St. Louis which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from St. Louis to Shannon?

momondo provides multiple filters to help you find the best flight to Shannon from St. Louis. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Price alerts on flights to Shannon from St. Louis are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Shannon, Clare trip

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