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Cheap flights from St. Louis to Shannon from €340

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 23/9. 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.
United Airlines Logo
08:20 - 10:15
STL
-
SNN
19h 55m
1 stop
United Airlines Logo
12:30 - 21:09
SNN
-
STL
14h 39m
1 stop
€663United Airlines
Mon, 21 Sep - Thu, 1 Oct
United Airlines Logo
12:59 - 10:15
STL
-
SNN
15h 16m
2 stops
United Airlines Logo
12:30 - 12:13
SNN
-
STL
29h 43m
3 stops
€666United Airlines
Mon, 21 Sep - Thu, 1 Oct
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
€681United 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
€685United Airlines
Sun, 16 Aug - Fri, 28 Aug
United Airlines Logo
07:00 - 10:15
STL
-
SNN
21h 15m
1 stop
United Airlines Logo
12:30 - 20:47
SNN
-
STL
14h 17m
1 stop
€686United Airlines
Wed, 2 Sep - Wed, 9 Sep
United Airlines Logo
07:00 - 10:15
STL
-
SNN
21h 15m
1 stop
United Airlines Logo
12:30 - 22:59
SNN
-
STL
16h 29m
2 stops
€690United Airlines
Wed, 2 Sep - Wed, 9 Sep
United Airlines Logo
11:15 - 10:15
STL
-
SNN
17h 00m
2 stops
United Airlines Logo
12:30 - 22:59
SNN
-
STL
16h 29m
2 stops
€712United Airlines
Wed, 2 Sep - Wed, 9 Sep
United Airlines Logo
08:00 - 07:30
STL
-
SNN
17h 30m
1 stop
United Airlines Logo
09:30 - 17:06
SNN
-
STL
13h 36m
1 stop
€725United Airlines
Thu, 10 Sep - Thu, 17 Sep
Delta Logo
10:29 - 11:10
STL
-
SNN
18h 41m
2 stops
Delta Logo
13:05 - 09:00
SNN
-
STL
25h 55m
2 stops
€728Delta
Thu, 10 Sep - Thu, 17 Sep
United Airlines Logo
18:54 - 07:30
STL
-
SNN
30h 36m
1 stop
United Airlines Logo
09:30 - 15:38
SNN
-
STL
12h 08m
1 stop
€729United Airlines
Sat, 5 Sep - Sat, 19 Sep

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British Airways flights from St. Louis to Shannon, Clare

Our best British Airways deals on St. Louis to Shannon, Clare flight tickets
British Airways
10 Nov
STL13:06Lambert-St Louis
16h 24m
2 stops
SNN11:30Shannon
1 Dec
SNN14:00Shannon
15h 58m
2 stops
STL23:58Lambert-St Louis
€842
British Airways
2 Sept
STL15:25Lambert-St Louis
18h 45m
2 stops
SNN16:10Shannon
9 Sept
SNN07:30Shannon
20h 14m
2 stops
STL21:44Lambert-St Louis
€852

Air Canada flights from St. Louis to Shannon, Clare

Our best Air Canada deals on St. Louis to Shannon, Clare flight tickets
Air Canada
10 Nov
STL13:08Lambert-St Louis
16h 22m
3 stops
SNN11:30Shannon
1 Dec
SNN07:50Shannon
19h 23m
3 stops
STL21:13Lambert-St Louis
€858
Air Canada
16 Aug
STL12:10Lambert-St Louis
17h 10m
2 stops
SNN11:20Shannon
28 Aug
SNN07:30Shannon
21h 29m
3 stops
STL22:59Lambert-St Louis
€877
Air Canada
9 Sept
STL12:10Lambert-St Louis
26h 25m
2 stops
SNN20:35Shannon
22 Sept
SNN21:15Shannon
27h 26m
2 stops
STL18:41Lambert-St Louis
€907

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 18 July 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

Mon 21/9

08:20-10:15

1 stop19h 55m

Shannon

Thu 1/10

12:30-21:09

1 stop14h 39m

€663

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Mon 21/9

12:59-10:15

2 stops15h 16m

Shannon

Thu 1/10

12:30-12:13

3 stops29h 43m

€666
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

€681

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

€684

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Wed 2/9

07:00-10:15

1 stop21h 15m

Shannon

Wed 9/9

12:30-20:47

1 stop14h 17m

€686

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Wed 2/9

07:00-10:15

1 stop21h 15m

Shannon

Wed 9/9

12:30-22:59

2 stops16h 29m

€690

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Wed 2/9

11:15-10:15

2 stops17h 00m

Shannon

Wed 9/9

12:30-22:59

2 stops16h 29m

€712

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Thu 10/9

08:00-07:30

1 stop17h 30m

Shannon

Thu 17/9

09:30-17:06

1 stop13h 36m

€725

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Thu 10/9

10:29-11:10

2 stops18h 41m

Shannon

Thu 17/9

13:05-09:00

2 stops25h 55m

€728

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Sat 5/9

18:54-07:30

1 stop30h 36m

Shannon

Sat 19/9

09:30-15:38

1 stop12h 08m

€729

Flights are sorted by cheapest return flights first.

Showing 1-10 of 16 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 typical price of a round-trip flight between St. Louis and Shannon, Clare?

What is the cheapest month to fly to Shannon, Clare?

The month of January is another great option to travel to Shannon, Clare, with average flight prices from St. Louis averaging around €0.

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

11h 25m

Direct flights

None
The fastest flight from St. Louis to Shannon, Clare takes 11h 25m
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. 11h 25m 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.

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