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Cheap flights from St. Louis to Shannon from €444

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 17/9. 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

Find the cheapest flights from St. Louis to Shannon

Cheap return flights

Enter your travel dates to find the best prices.
United Airlines Logo
11:15 - 07:30STL  Lambert-St Louis-SNN Shannon
14h 15m1 stop Chicago O'Hare Intl
United Airlines Logo
12:30 - 23:38SNN  Shannon-STL Lambert-St Louis
17h 08m1 stop Newark
€675United Airlines
Tue, 8 Sep - Tue, 15 Sep
United Airlines Logo
09:00 - 10:15STL  Lambert-St Louis-SNN Shannon
19h 15m2 stops Denver Intl Newark
United Airlines Logo
12:30 - 23:38SNN  Shannon-STL Lambert-St Louis
17h 08m1 stop Newark
€679United Airlines
Tue, 8 Sep - Tue, 15 Sep
United Airlines Logo
16:50 - 10:15STL  Lambert-St Louis-SNN Shannon
11h 25m1 stop Newark
United Airlines Logo
12:30 - 21:09SNN  Shannon-STL Lambert-St Louis
14h 39m1 stop Newark
€709United Airlines
Tue, 29 Sep - Mon, 5 Oct
United Airlines Logo
09:00 - 10:15STL  Lambert-St Louis-SNN Shannon
19h 15m2 stops Denver Intl Newark
United Airlines Logo
12:30 - 21:09SNN  Shannon-STL Lambert-St Louis
14h 39m1 stop Newark
€712United Airlines
Tue, 29 Sep - Mon, 5 Oct
United Airlines Logo
08:00 - 07:30STL  Lambert-St Louis-SNN Shannon
17h 30m1 stop Chicago O'Hare Intl
United Airlines Logo
12:30 - 23:38SNN  Shannon-STL Lambert-St Louis
17h 08m1 stop Newark
€717United Airlines
Wed, 9 Sep - Tue, 22 Sep
United Airlines Logo
12:59 - 07:30STL  Lambert-St Louis-SNN Shannon
12h 31m1 stop Chicago O'Hare Intl
United Airlines Logo
12:30 - 20:47SNN  Shannon-STL Lambert-St Louis
14h 17m1 stop Newark
€718United Airlines
Thu, 10 Sep - Thu, 17 Sep
United Airlines Logo
08:35 - 10:15STL  Lambert-St Louis-SNN Shannon
19h 40m2 stops Houston George Bush Intcntl Newark
United Airlines Logo
12:30 - 22:00SNN  Shannon-STL Lambert-St Louis
15h 30m2 stops Newark Chicago O'Hare Intl
€721United Airlines
Wed, 9 Sep - Tue, 22 Sep
Delta Logo
07:05 - 11:10STL  Lambert-St Louis-SNN Shannon
22h 05m2 stops Atlanta Hartsfield-Jackson New York John F Kennedy Intl
Delta Logo
13:05 - 09:00SNN  Shannon-STL Lambert-St Louis
25h 55m2 stops New York John F Kennedy Intl Atlanta Hartsfield-Jackson
€722Delta
Thu, 10 Sep - Thu, 17 Sep
United Airlines Logo
06:00 - 07:30STL  Lambert-St Louis-SNN Shannon
19h 30m1 stop Chicago O'Hare Intl
United Airlines Logo
12:30 - 21:36SNN  Shannon-STL Lambert-St Louis
15h 06m2 stops Newark Chicago O'Hare Intl
€723United Airlines
Thu, 10 Sep - Thu, 17 Sep
United Airlines Logo
08:20 - 10:15STL  Lambert-St Louis-SNN Shannon
19h 55m1 stop Newark
United Airlines Logo
09:30 - 14:15SNN  Shannon-STL Lambert-St Louis
10h 45m1 stop Chicago O'Hare Intl
€762United Airlines
Sat, 12 Sep - Sat, 19 Sep

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United Airlines flights from St. Louis to Shannon, Clare

Our best United Airlines deals on St. Louis to Shannon, Clare flight tickets
United Airlines
8 Sept
STL11:15Lambert-St Louis
14h 15m
1 stop
SNN07:30Shannon
15 Sept
SNN12:30Shannon
17h 08m
1 stop
STL23:38Lambert-St Louis
€675
United Airlines
8 Sept
STL09:00Lambert-St Louis
19h 15m
2 stops
SNN10:15Shannon
15 Sept
SNN12:30Shannon
17h 08m
1 stop
STL23:38Lambert-St Louis
€679
United Airlines
29 Sept
STL16:50Lambert-St Louis
11h 25m
1 stop
SNN10:15Shannon
5 Oct
SNN12:30Shannon
14h 39m
1 stop
STL21:09Lambert-St Louis
€709

Air Canada flights from St. Louis to Shannon, Clare

Our best Air Canada deals on St. Louis to Shannon, Clare flight tickets
Air Canada
24 Sept
STL12:10Lambert-St Louis
26h 25m
2 stops
SNN20:35Shannon
1 Oct
SNN07:30Shannon
19h 51m
3 stops
STL21:21Lambert-St Louis
€894
Air Canada
16 Aug
STL12:10Lambert-St Louis
26h 25m
2 stops
SNN20:35Shannon
28 Aug
SNN07:30Shannon
19h 47m
3 stops
STL21:17Lambert-St Louis
€947
Air Canada
12 Sept
STL12:10Lambert-St Louis
17h 10m
2 stops
SNN11:20Shannon
19 Sept
SNN07:30Shannon
21h 29m
3 stops
STL22:59Lambert-St Louis
€956

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 12 August 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 Lambert-St Louis - SNN Shannon

STLSNN

Lambert-St Louis

Tue 8/9

11:15-07:30

1 stop14h 15m

Shannon

Tue 15/9

12:30-23:38

1 stop17h 08m

€675

St. LouisShannon

STL Lambert-St Louis - SNN Shannon

STLSNN

Lambert-St Louis

Tue 8/9

09:00-10:15

2 stops19h 15m

Shannon

Tue 15/9

12:30-23:38

1 stop17h 08m

€679
Fastest return journey

St. LouisShannon

STL Lambert-St Louis - SNN Shannon

STLSNN

Lambert-St Louis

Tue 29/9

16:50-10:15

1 stop11h 25m

Shannon

Mon 5/10

12:30-21:09

1 stop14h 39m

€709

St. LouisShannon

STL Lambert-St Louis - SNN Shannon

STLSNN

Lambert-St Louis

Tue 29/9

09:00-10:15

2 stops19h 15m

Shannon

Mon 5/10

12:30-21:09

1 stop14h 39m

€712

St. LouisShannon

STL Lambert-St Louis - SNN Shannon

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

€717

St. LouisShannon

STL Lambert-St Louis - SNN Shannon

STLSNN

Lambert-St Louis

Thu 10/9

12:59-07:30

1 stop12h 31m

Shannon

Thu 17/9

12:30-20:47

1 stop14h 17m

€718

St. LouisShannon

STL Lambert-St Louis - SNN Shannon

STLSNN

Lambert-St Louis

Wed 9/9

08:35-10:15

2 stops19h 40m

Shannon

Tue 22/9

12:30-22:00

2 stops15h 30m

€721

St. LouisShannon

STL Lambert-St Louis - SNN Shannon

STLSNN

Lambert-St Louis

Thu 10/9

07:05-11:10

2 stops22h 05m

Shannon

Thu 17/9

13:05-09:00

2 stops25h 55m

€722

St. LouisShannon

STL Lambert-St Louis - SNN Shannon

STLSNN

Lambert-St Louis

Thu 10/9

06:00-07:30

1 stop19h 30m

Shannon

Thu 17/9

12:30-21:36

2 stops15h 06m

€723

St. LouisShannon

STL Lambert-St Louis - SNN Shannon

STLSNN

Lambert-St Louis

Sat 12/9

08:20-10:15

1 stop19h 55m

Shannon

Sat 19/9

09:30-14:15

1 stop10h 45m

€762

Flights are sorted by cheapest return flights first.

Showing 1-10 of 12 resultsSorted by cheapest first
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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 typical price of a round-trip flight between St. Louis and Shannon, Clare?

Prices are currently typical for flights on this route.

Typical prices usually range from €527 to €811.
The lowest price recently found on this route was €675.

What is the cheapest month to fly to Shannon, Clare?

The month of January is another great option to travel to Shannon, Clare, with average flight prices from St. Louis averaging around €0.

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

11h 25m

Direct flights

None
The fastest flight from St. Louis to Shannon, Clare takes 11h 25m
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. 11h 25m 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
Lahinch
Nenagh
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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