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Cheap flights from St. Louis to Shannon from €481

This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Shannon departing on 17/8. 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
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
09:16 - 07:30
STL
-
SNN
16h 14m
1 stop
United Airlines Logo
09:30 - 21:22
SNN
-
STL
17h 52m
1 stop
€481United Airlines
Mon, 17 Aug - Fri, 21 Aug
United Airlines Logo
05:00 - 07:30
STL
-
SNN
20h 30m
1 stop
United Airlines Logo
09:30 - 23:00
SNN
-
STL
19h 30m
1 stop
€482United Airlines
Mon, 17 Aug - Fri, 21 Aug
United Airlines Logo
13:18 - 07:30
STL
-
SNN
12h 12m
1 stop
United Airlines Logo
12:30 - 21:22
SNN
-
STL
14h 52m
2 stops
€485United Airlines
Mon, 17 Aug - Fri, 21 Aug
United Airlines Logo
10:00 - 10:15
STL
-
SNN
18h 15m
2 stops
United Airlines Logo
12:30 - 21:13
SNN
-
STL
14h 43m
2 stops
€514United Airlines
Sun, 5 Apr - Tue, 21 Apr
United Airlines Logo
17:32 - 07:30
STL
-
SNN
31h 58m
1 stop
United Airlines Logo
09:30 - 15:38
SNN
-
STL
12h 08m
1 stop
€523United Airlines
Sat, 15 Aug - Sun, 23 Aug
United Airlines Logo
18:55 - 07:30
STL
-
SNN
30h 35m
1 stop
United Airlines Logo
09:30 - 15:38
SNN
-
STL
12h 08m
1 stop
€524United Airlines
Sat, 15 Aug - Sun, 23 Aug
United Airlines Logo
09:00 - 10:15
STL
-
SNN
19h 15m
2 stops
United Airlines Logo
09:30 - 14:25
SNN
-
STL
10h 55m
1 stop
€528United Airlines
Mon, 17 Aug - Mon, 24 Aug
United Airlines Logo
13:18 - 10:15
STL
-
SNN
14h 57m
2 stops
United Airlines Logo
12:30 - 21:22
SNN
-
STL
14h 52m
2 stops
€553United Airlines
Mon, 17 Aug - Fri, 21 Aug
United Airlines Logo
06:00 - 10:15
STL
-
SNN
22h 15m
2 stops
United Airlines Logo
09:30 - 23:00
SNN
-
STL
19h 30m
1 stop
€571United Airlines
Sat, 15 Aug - Sun, 23 Aug
Air Canada Logo
06:15 - 10:15
STL
-
SNN
22h 00m
1 stop
Air Canada Logo
12:30 - 23:57
SNN
-
STL
17h 27m
1 stop
€608Air Canada
Mon, 20 Apr - Mon, 27 Apr

British Airways flights from St. Louis to Shannon, Clare

Our best British Airways deals on St. Louis to Shannon, Clare flight tickets
British Airways
15 Aug
STL16:18Lambert-St Louis
22h 17m
2 stops
SNN20:35Shannon
23 Aug
SNN21:15Shannon
28h 08m
2 stops
STL19:23Lambert-St Louis
€684
British Airways
15 Aug
STL09:45Lambert-St Louis
48h 25m
2 stops
SNN16:10Shannon
23 Aug
SNN21:15Shannon
24h 33m
2 stops
STL15:48Lambert-St Louis
€732
British Airways
25 Mar
STL18:57Lambert-St Louis
16h 48m
2 stops
SNN16:45Shannon
4 Apr
SNN07:30Shannon
21h 28m
2 stops
STL22:58Lambert-St Louis
€771

United Airlines flights from St. Louis to Shannon, Clare

Our best United Airlines deals on St. Louis to Shannon, Clare flight tickets
United Airlines
17 Aug
STL09:16Lambert-St Louis
16h 14m
1 stop
SNN07:30Shannon
21 Aug
SNN09:30Shannon
17h 52m
1 stop
STL21:22Lambert-St Louis
€481
United Airlines
17 Aug
STL05:00Lambert-St Louis
20h 30m
1 stop
SNN07:30Shannon
21 Aug
SNN09:30Shannon
19h 30m
1 stop
STL23:00Lambert-St Louis
€482
United Airlines
17 Aug
STL13:18Lambert-St Louis
12h 12m
1 stop
SNN07:30Shannon
21 Aug
SNN12:30Shannon
14h 52m
2 stops
STL21:22Lambert-St Louis
€485

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 7 March 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 17/8

09:16-07:30

1 stop16h 14m

Shannon

Fri 21/8

09:30-21:22

1 stop17h 52m

€481

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Mon 17/8

05:00-07:30

1 stop20h 30m

Shannon

Fri 21/8

09:30-23:00

1 stop19h 30m

€482
Fastest return journey

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Mon 17/8

13:18-07:30

1 stop12h 12m

Shannon

Fri 21/8

12:30-21:22

2 stops14h 52m

€485

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Sun 5/4

10:00-10:15

2 stops18h 15m

Shannon

Tue 21/4

12:30-21:13

2 stops14h 43m

€514

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Sat 15/8

17:32-07:30

1 stop31h 58m

Shannon

Sun 23/8

09:30-15:38

1 stop12h 08m

€523

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Sat 15/8

18:55-07:30

1 stop30h 35m

Shannon

Sun 23/8

09:30-15:38

1 stop12h 08m

€524

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Mon 17/8

09:00-10:15

2 stops19h 15m

Shannon

Mon 24/8

09:30-14:25

1 stop10h 55m

€528

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Mon 17/8

13:18-10:15

2 stops14h 57m

Shannon

Fri 21/8

12:30-21:22

2 stops14h 52m

€553

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Sat 15/8

06:00-10:15

2 stops22h 15m

Shannon

Sun 23/8

09:30-23:00

1 stop19h 30m

€571

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Mon 20/4

06:15-10:15

1 stop22h 00m

Shannon

Mon 27/4

12:30-23:57

1 stop17h 27m

€608

Flights are sorted by cheapest return flights first.

Showing 1-10 of 15 resultsSorted by cheapest first
1
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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 and British Airways are the most popular carriers 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

16h 07m

Direct flights

None
The fastest flight from St. Louis to Shannon, Clare takes 16h 07m
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

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

    Shannon is 6155.2 km away from Lambert-St Louis. 16h 07m 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
Killaloe
Nenagh
Adare
Lahinch
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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