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Cheap flights from St. Louis to Shannon from €231

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 19/10. 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
06:14 - 07:30
STL
-
SNN
19h 16m
2 stops
United Airlines Logo
09:30 - 15:38
SNN
-
STL
12h 08m
1 stop
€674United Airlines
Mon, 3 Aug - Wed, 19 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
€680United 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
€684United Airlines
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
€722United Airlines
Wed, 9 Sep - Tue, 22 Sep
United Airlines Logo
15:35 - 07:30
STL
-
SNN
9h 55m
1 stop
United Airlines Logo
09:30 - 14:15
SNN
-
STL
10h 45m
1 stop
€723United Airlines
Wed, 9 Sep - Sun, 13 Sep
United Airlines Logo
08:50 - 07:30
STL
-
SNN
16h 40m
1 stop
United Airlines Logo
09:30 - 19:11
SNN
-
STL
15h 41m
2 stops
€727United Airlines
Wed, 9 Sep - Tue, 22 Sep
United Airlines Logo
05:10 - 07:30
STL
-
SNN
20h 20m
2 stops
United Airlines Logo
09:30 - 18:16
SNN
-
STL
14h 46m
1 stop
€728United Airlines
Wed, 9 Sep - Sun, 13 Sep
United Airlines Logo
11:25 - 07:30
STL
-
SNN
14h 05m
1 stop
United Airlines Logo
12:30 - 23:36
SNN
-
STL
17h 06m
1 stop
€765United Airlines
Wed, 15 Jul - Tue, 21 Jul
United Airlines Logo
15:22 - 07:30
STL
-
SNN
10h 08m
1 stop
United Airlines Logo
09:30 - 17:27
SNN
-
STL
13h 57m
1 stop
€766United Airlines
Thu, 30 Jul - Thu, 6 Aug
Delta Logo
07:08 - 11:10
STL
-
SNN
22h 02m
2 stops
Delta Logo
13:05 - 09:43
SNN
-
STL
26h 38m
2 stops
€770Delta
Wed, 15 Jul - Tue, 21 Jul

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Delta flights from St. Louis to Shannon, Clare

Our best Delta deals on St. Louis to Shannon, Clare flight tickets
Delta
16 Aug
STL10:44Lambert-St Louis
18h 26m
2 stops
SNN11:10Shannon
28 Aug
SNN13:05Shannon
13h 37m
2 stops
STL20:42Lambert-St Louis
€684
Delta
15 Jul
STL07:08Lambert-St Louis
22h 02m
2 stops
SNN11:10Shannon
21 Jul
SNN13:05Shannon
26h 38m
2 stops
STL09:43Lambert-St Louis
€770
Delta
5 Sept
STL06:00Lambert-St Louis
23h 10m
2 stops
SNN11:10Shannon
20 Sept
SNN13:05Shannon
25h 50m
2 stops
STL08:55Lambert-St Louis
€823

United Airlines flights from St. Louis to Shannon, Clare

Our best United Airlines deals on St. Louis to Shannon, Clare flight tickets
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
€680
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
€722
United Airlines
9 Sept
STL08:50Lambert-St Louis
16h 40m
1 stop
SNN07:30Shannon
22 Sept
SNN09:30Shannon
15h 41m
2 stops
STL19:11Lambert-St Louis
€727

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 20 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

Mon 3/8

06:14-07:30

2 stops19h 16m

Shannon

Wed 19/8

09:30-15:38

1 stop12h 08m

€674

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

€680

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 9/9

08:00-07:30

1 stop17h 30m

Shannon

Tue 22/9

12:30-23:38

1 stop17h 08m

€722
Fastest return journey

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Wed 9/9

15:35-07:30

1 stop9h 55m

Shannon

Sun 13/9

09:30-14:15

1 stop10h 45m

€723

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Wed 9/9

08:50-07:30

1 stop16h 40m

Shannon

Tue 22/9

09:30-19:11

2 stops15h 41m

€727

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Wed 9/9

05:10-07:30

2 stops20h 20m

Shannon

Sun 13/9

09:30-18:16

1 stop14h 46m

€728

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Wed 15/7

11:25-07:30

1 stop14h 05m

Shannon

Tue 21/7

12:30-23:36

1 stop17h 06m

€765

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Thu 30/7

15:22-07:30

1 stop10h 08m

Shannon

Thu 6/8

09:30-17:27

1 stop13h 57m

€766

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Wed 15/7

07:08-11:10

2 stops22h 02m

Shannon

Tue 21/7

13:05-09:43

2 stops26h 38m

€770

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 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.

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