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Cheap flights from St. Louis to Shannon from €320

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 15/5. 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.
British Airways Logo
18:57 - 16:45
STL
-
SNN
16h 48m
2 stops
British Airways Logo
20:05 - 19:29
SNN
-
STL
28h 24m
2 stops
€404British Airways
Mon, 9 Mar - Sun, 15 Mar
British Airways Logo
09:35 - 11:30
STL
-
SNN
19h 55m
2 stops
British Airways Logo
07:50 - 19:30
SNN
-
STL
17h 40m
2 stops
€418British Airways
Wed, 25 Feb - Sun, 1 Mar
British Airways Logo
10:37 - 11:30
STL
-
SNN
18h 53m
2 stops
British Airways Logo
07:50 - 23:48
SNN
-
STL
21h 58m
2 stops
€419British Airways
Wed, 25 Feb - Sun, 1 Mar
American Airlines Logo
11:59 - 06:20
STL
-
SNN
13h 21m
1 stop
American Airlines Logo
07:40 - 22:58
SNN
-
STL
21h 18m
2 stops
€484American Airlines
Wed, 25 Mar - Sat, 4 Apr
British Airways Logo
11:59 - 11:30
STL
-
SNN
18h 31m
2 stops
British Airways Logo
07:40 - 22:58
SNN
-
STL
21h 18m
2 stops
€489British Airways
Wed, 25 Mar - Sat, 4 Apr
American Airlines Logo
14:00 - 11:30
STL
-
SNN
16h 30m
2 stops
American Airlines Logo
14:45 - 11:29
SNN
-
STL
25h 44m
1 stop
€507American Airlines
Fri, 20 Mar - Wed, 25 Mar
British Airways Logo
16:13 - 19:25
STL
-
SNN
22h 12m
2 stops
British Airways Logo
20:05 - 18:07
SNN
-
STL
27h 02m
2 stops
€510British Airways
Mon, 9 Mar - Sun, 15 Mar
American Airlines Logo
14:00 - 11:30
STL
-
SNN
16h 30m
2 stops
American Airlines Logo
14:45 - 11:29
SNN
-
STL
25h 44m
1 stop
€525American Airlines
Mon, 9 Mar - Sun, 15 Mar
American Airlines Logo
11:59 - 06:20
STL
-
SNN
13h 21m
1 stop
American Airlines Logo
14:45 - 11:29
SNN
-
STL
25h 44m
1 stop
€531American Airlines
Fri, 20 Mar - Wed, 25 Mar
American Airlines Logo
11:59 - 06:20
STL
-
SNN
13h 21m
1 stop
American Airlines Logo
14:45 - 11:29
SNN
-
STL
25h 44m
1 stop
€531American Airlines
Fri, 20 Mar - Wed, 25 Mar

Air Canada flights from St. Louis to Shannon, Clare

Our best Air Canada deals on St. Louis to Shannon, Clare flight tickets
Air Canada
20 Mar
STL16:05Lambert-St Louis
14h 25m
2 stops
SNN11:30Shannon
25 Mar
SNN07:50Shannon
18h 17m
3 stops
STL21:07Lambert-St Louis
€597
Air Canada
25 Mar
STL16:05Lambert-St Louis
14h 25m
2 stops
SNN11:30Shannon
4 Apr
SNN07:30Shannon
20h 27m
3 stops
STL21:57Lambert-St Louis
€794
Air Canada
9 Mar
STL11:25Lambert-St Louis
19h 05m
3 stops
SNN11:30Shannon
15 Mar
SNN07:50Shannon
18h 17m
3 stops
STL21:07Lambert-St Louis
€947

American Airlines flights from St. Louis to Shannon, Clare

Our best American Airlines deals on St. Louis to Shannon, Clare flight tickets
American Airlines
25 Mar
STL11:59Lambert-St Louis
13h 21m
1 stop
SNN06:20Shannon
4 Apr
SNN07:40Shannon
21h 18m
2 stops
STL22:58Lambert-St Louis
€484
American Airlines
20 Mar
STL14:00Lambert-St Louis
16h 30m
2 stops
SNN11:30Shannon
25 Mar
SNN14:45Shannon
25h 44m
1 stop
STL11:29Lambert-St Louis
€507
American Airlines
9 Mar
STL14:00Lambert-St Louis
16h 30m
2 stops
SNN11:30Shannon
15 Mar
SNN14:45Shannon
25h 44m
1 stop
STL11:29Lambert-St Louis
€525

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 15 January 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

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Mon 9/3

18:57-16:45

2 stops16h 48m

Shannon

Sun 15/3

20:05-19:29

2 stops28h 24m

€404

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Wed 25/2

09:35-11:30

2 stops19h 55m

Shannon

Sun 1/3

07:50-19:30

2 stops17h 40m

€418

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Wed 25/2

10:37-11:30

2 stops18h 53m

Shannon

Sun 1/3

07:50-23:48

2 stops21h 58m

€419

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Wed 25/3

11:59-06:20

1 stop13h 21m

Shannon

Sat 4/4

07:40-22:58

2 stops21h 18m

€484

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Wed 25/3

11:59-11:30

2 stops18h 31m

Shannon

Sat 4/4

07:40-22:58

2 stops21h 18m

€489

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Fri 20/3

14:00-11:30

2 stops16h 30m

Shannon

Wed 25/3

14:45-11:29

1 stop25h 44m

€507

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Mon 9/3

16:13-19:25

2 stops22h 12m

Shannon

Sun 15/3

20:05-18:07

2 stops27h 02m

€510

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Mon 9/3

14:00-11:30

2 stops16h 30m

Shannon

Sun 15/3

14:45-11:29

1 stop25h 44m

€525

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Fri 20/3

11:59-06:20

1 stop13h 21m

Shannon

Wed 25/3

14:45-11:29

1 stop25h 44m

€531

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Fri 20/3

11:59-06:20

1 stop13h 21m

Shannon

Wed 25/3

14:45-11:29

1 stop25h 44m

€531

Flights are sorted by cheapest return flights first.

Showing 1-10 of 13 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?

British Airways and Lufthansa 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

15h 51m

Direct flights

None
The fastest flight from St. Louis to Shannon, Clare takes 15h 51m
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. 15h 51m 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
Nenagh
Tipperary
Adare
Killaloe
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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