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Cheap flights from St. Louis to Shannon from €288

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 30/5. 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.
United Airlines Logo
17:24 - 10:15
STL
-
SNN
10h 51m
1 stop
United Airlines Logo
12:30 - 09:30
SNN
-
STL
27h 00m
2 stops
€460United Airlines
Mon, 27 Apr - Sat, 9 May
Lufthansa Logo
17:24 - 10:15
STL
-
SNN
10h 51m
1 stop
Lufthansa Logo
12:00 - 13:25
SNN
-
STL
31h 25m
1 stop
€498Lufthansa
Mon, 27 Apr - Sat, 9 May
United Airlines Logo
17:59 - 10:15
STL
-
SNN
34h 16m
2 stops
United Airlines Logo
12:30 - 09:30
SNN
-
STL
27h 00m
2 stops
€514United Airlines
Fri, 1 May - Mon, 11 May
Air Canada Logo
16:05 - 11:30
STL
-
SNN
37h 25m
2 stops
Air Canada Logo
07:50 - 15:29
SNN
-
STL
37h 39m
2 stops
€584Air Canada
Wed, 25 Feb - Sun, 1 Mar
Air Canada Logo
16:05 - 16:45
STL
-
SNN
18h 40m
2 stops
Air Canada Logo
07:50 - 15:29
SNN
-
STL
37h 39m
2 stops
€585Air Canada
Wed, 25 Feb - Sun, 1 Mar
Multiple Airlines Logo
13:00 - 20:35
STL
-
SNN
25h 35m
2 stops
Multiple Airlines Logo
07:30 - 20:05
SNN
-
STL
18h 35m
2 stops
€597Multiple Airlines
Wed, 6 May - Wed, 3 Jun
British Airways Logo
18:57 - 16:45
STL
-
SNN
16h 48m
2 stops
British Airways Logo
13:45 - 08:38
SNN
-
STL
24h 53m
2 stops
€606British Airways
Wed, 25 Mar - Sat, 4 Apr
British Airways Logo
14:12 - 11:20
STL
-
SNN
15h 08m
2 stops
British Airways Logo
07:30 - 19:30
SNN
-
STL
18h 00m
1 stop
€616British Airways
Wed, 6 May - Wed, 3 Jun
British Airways Logo
13:34 - 11:30
STL
-
SNN
16h 56m
2 stops
British Airways Logo
17:25 - 17:13
SNN
-
STL
29h 48m
2 stops
€623British Airways
Wed, 25 Mar - Sat, 4 Apr
KLM Logo
16:26 - 11:10
STL
-
SNN
12h 44m
1 stop
KLM Logo
13:05 - 16:40
SNN
-
STL
33h 35m
1 stop
€636KLM
Sat, 30 May - Sun, 14 Jun

Air Canada flights from St. Louis to Shannon, Clare

Our best Air Canada deals on St. Louis to Shannon, Clare flight tickets
Air Canada
25 Feb
STL16:05Lambert-St Louis
37h 25m
2 stops
SNN11:30Shannon
1 Mar
SNN07:50Shannon
37h 39m
2 stops
STL15:29Lambert-St Louis
€584
Air Canada
25 Feb
STL16:05Lambert-St Louis
18h 40m
2 stops
SNN16:45Shannon
1 Mar
SNN07:50Shannon
37h 39m
2 stops
STL15:29Lambert-St Louis
€585
Air Canada
25 Feb
STL16:05Lambert-St Louis
37h 25m
2 stops
SNN11:30Shannon
1 Mar
SNN07:50Shannon
37h 39m
2 stops
STL15:29Lambert-St Louis
€648

KLM flights from St. Louis to Shannon, Clare

Our best KLM deals on St. Louis to Shannon, Clare flight tickets
KLM
30 May
STL16:26Lambert-St Louis
12h 44m
1 stop
SNN11:10Shannon
14 Jun
SNN13:05Shannon
33h 35m
1 stop
STL16:40Lambert-St Louis
€636
KLM
30 May
STL13:27Lambert-St Louis
15h 43m
2 stops
SNN11:10Shannon
14 Jun
SNN13:05Shannon
33h 35m
1 stop
STL16:40Lambert-St Louis
€640
KLM
30 Jun
STL13:30Lambert-St Louis
15h 40m
2 stops
SNN11:10Shannon
12 Jul
SNN13:05Shannon
33h 35m
1 stop
STL16:40Lambert-St Louis
€820

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 5 February 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 27/4

17:24-10:15

1 stop10h 51m

Shannon

Sat 9/5

12:30-09:30

2 stops27h 00m

€460

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Mon 27/4

17:24-10:15

1 stop10h 51m

Shannon

Sat 9/5

12:00-13:25

1 stop31h 25m

€498

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Fri 1/5

17:59-10:15

2 stops34h 16m

Shannon

Mon 11/5

12:30-09:30

2 stops27h 00m

€514

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Wed 25/2

16:05-11:30

2 stops37h 25m

Shannon

Sun 1/3

07:50-15:29

2 stops37h 39m

€584

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Wed 25/2

16:05-16:45

2 stops18h 40m

Shannon

Sun 1/3

07:50-15:29

2 stops37h 39m

€585

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Wed 6/5

13:00-20:35

2 stops25h 35m

Shannon

Wed 3/6

07:30-20:05

2 stops18h 35m

€597

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Wed 25/3

18:57-16:45

2 stops16h 48m

Shannon

Sat 4/4

13:45-08:38

2 stops24h 53m

€606

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Wed 6/5

14:12-11:20

2 stops15h 08m

Shannon

Wed 3/6

07:30-19:30

1 stop18h 00m

€616

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Wed 25/3

13:34-11:30

2 stops16h 56m

Shannon

Sat 4/4

17:25-17:13

2 stops29h 48m

€623

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Sat 30/5

16:26-11:10

1 stop12h 44m

Shannon

Sun 14/6

13:05-16:40

1 stop33h 35m

€636

Flights are sorted by cheapest return flights first.

Showing 1-10 of 18 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, Aer Lingus, 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

10h 15m

Direct flights

None
The fastest flight from St. Louis to Shannon, Clare takes 10h 15m
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. 10h 15m 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
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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