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Cheap flights from St. Louis to Shannon from €377

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.
American Airlines Logo
14:32 - 11:30
STL
-
SNN
15h 58m2 stops
American Airlines Logo
07:40 - 18:07
SNN
-
STL
16h 27m2 stops
€517American Airlines
Wed, 25 Mar - Sat, 4 Apr
Multiple Airlines Logo
16:05 - 11:30
STL
-
SNN
14h 25m2 stops
Multiple Airlines Logo
12:00 - 13:25
SNN
-
STL
31h 25m1 stop
€537Multiple Airlines
Wed, 25 Mar - Sat, 4 Apr
Air Canada Logo
16:05 - 11:30
STL
-
SNN
13h 25m2 stops
Air Canada Logo
17:30 - 15:29
SNN
-
STL
51h 59m2 stops
€583Air Canada
Fri, 30 Jan - Tue, 3 Feb
Air Canada Logo
16:05 - 16:45
STL
-
SNN
18h 40m2 stops
Air Canada Logo
07:50 - 21:05
SNN
-
STL
18h 15m3 stops
€592Air Canada
Sat, 7 Mar - Sat, 14 Mar
Multiple Airlines Logo
11:25 - 11:30
STL
-
SNN
19h 05m3 stops
Multiple Airlines Logo
07:40 - 15:24
SNN
-
STL
37h 44m2 stops
€630Multiple Airlines
Wed, 25 Mar - Sat, 4 Apr
American Airlines Logo
11:59 - 06:20
STL
-
SNN
13h 21m1 stop
American Airlines Logo
13:45 - 11:29
SNN
-
STL
27h 44m1 stop
€672American Airlines
Wed, 25 Mar - Sat, 4 Apr
United Airlines Logo
11:45 - 07:30
STL
-
SNN
13h 45m1 stop
United Airlines Logo
09:30 - 14:18
SNN
-
STL
10h 48m1 stop
€679United Airlines
Wed, 3 Jun - Thu, 11 Jun
United Airlines Logo
06:30 - 07:30
STL
-
SNN
19h 00m2 stops
United Airlines Logo
09:30 - 23:43
SNN
-
STL
20h 13m2 stops
€683United Airlines
Wed, 3 Jun - Thu, 11 Jun
Multiple Airlines Logo
11:25 - 11:30
STL
-
SNN
19h 05m3 stops
Multiple Airlines Logo
07:40 - 15:24
SNN
-
STL
37h 44m2 stops
€687Multiple Airlines
Wed, 25 Mar - Sat, 4 Apr
Air Canada Logo
11:25 - 11:30
STL
-
SNN
19h 05m3 stops
Air Canada Logo
07:40 - 21:08
SNN
-
STL
19h 28m3 stops
€697Air Canada
Wed, 25 Mar - Sat, 4 Apr

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
STL14:32Lambert-St Louis
15h 58m
2 stops
SNN11:30Shannon
4 Apr
SNN07:40Shannon
16h 27m
2 stops
STL18:07Lambert-St Louis
€517
Find similar
American Airlines
25 Mar
STL11:59Lambert-St Louis
13h 21m
1 stop
SNN06:20Shannon
4 Apr
SNN13:45Shannon
27h 44m
1 stop
STL11:29Lambert-St Louis
€672
Find similar
American Airlines
25 Mar
STL11:59Lambert-St Louis
13h 21m
1 stop
SNN06:20Shannon
4 Apr
SNN13:45Shannon
27h 44m
1 stop
STL11:29Lambert-St Louis
€698
Find similar

Air Canada flights from St. Louis to Shannon, Clare

Our best Air Canada deals on St. Louis to Shannon, Clare flight tickets
Air Canada
30 Jan
STL16:05Lambert-St Louis
13h 25m
2 stops
SNN11:30Shannon
3 Feb
SNN17:30Shannon
51h 59m
2 stops
STL15:29Lambert-St Louis
€583
Find similar
Air Canada
7 Mar
STL16:05Lambert-St Louis
18h 40m
2 stops
SNN16:45Shannon
14 Mar
SNN07:50Shannon
18h 15m
3 stops
STL21:05Lambert-St Louis
€592
Find similar
Air Canada
25 Mar
STL11:25Lambert-St Louis
19h 05m
3 stops
SNN11:30Shannon
4 Apr
SNN07:40Shannon
19h 28m
3 stops
STL21:08Lambert-St Louis
€697
Find similar

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 22 December 2025.
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

Wed 25/3

14:32-11:30

2 stops15h 58m

Shannon

Sat 4/4

07:40-18:07

2 stops16h 27m

€517

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Wed 25/3

16:05-11:30

2 stops14h 25m

Shannon

Sat 4/4

12:00-13:25

1 stop31h 25m

€537

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Fri 30/1

16:05-11:30

2 stops13h 25m

Shannon

Tue 3/2

17:30-15:29

2 stops51h 59m

€583

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Sat 7/3

16:05-16:45

2 stops18h 40m

Shannon

Sat 14/3

07:50-21:05

3 stops18h 15m

€592

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Wed 25/3

11:25-11:30

3 stops19h 05m

Shannon

Sat 4/4

07:40-15:24

2 stops37h 44m

€630

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Wed 25/3

11:59-06:20

1 stop13h 21m

Shannon

Sat 4/4

13:45-11:29

1 stop27h 44m

€672

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Wed 3/6

11:45-07:30

1 stop13h 45m

Shannon

Thu 11/6

09:30-14:18

1 stop10h 48m

€679

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Wed 3/6

06:30-07:30

2 stops19h 00m

Shannon

Thu 11/6

09:30-23:43

2 stops20h 13m

€683

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Wed 25/3

11:25-11:30

3 stops19h 05m

Shannon

Sat 4/4

07:40-15:24

2 stops37h 44m

€687

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Wed 25/3

11:25-11:30

3 stops19h 05m

Shannon

Sat 4/4

07:40-21:08

3 stops19h 28m

€697

Flights are sorted by cheapest return flights first.

Showing 1-10 of 12 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

13h 45m

Direct flights

None
The fastest flight from St. Louis to Shannon, Clare takes 13h 45m
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. 13h 45m 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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