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Cheap flights from St. Louis to Shannon from €250

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 7/12. 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
06:15 - 10:15STL-SNN
22h 00m2 stops
United Airlines Logo
12:30 - 09:42SNN-STL
27h 12m2 stops
€467United Airlines
Find Deal
Wed, 15 Apr - Tue, 28 Apr
American Airlines Logo
18:29 - 16:10STL-SNN
15h 41m2 stops
American Airlines Logo
07:40 - 21:48SNN-STL
20h 08m2 stops
€505American Airlines
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Thu, 2 Apr - Wed, 8 Apr
American Airlines Logo
14:36 - 11:30STL-SNN
15h 54m2 stops
American Airlines Logo
07:40 - 19:02SNN-STL
17h 22m2 stops
€596American Airlines
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Wed, 25 Mar - Sat, 4 Apr
American Airlines Logo
14:21 - 11:30STL-SNN
16h 09m2 stops
American Airlines Logo
07:40 - 19:02SNN-STL
17h 22m2 stops
€597American Airlines
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Wed, 25 Mar - Sat, 4 Apr
Multiple Airlines Logo
16:05 - 11:30STL-SNN
38h 25m2 stops
Multiple Airlines Logo
12:30 - 19:48SNN-STL
13h 18m1 stop
€668Multiple Airlines
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Wed, 25 Mar - Sat, 4 Apr
Air Canada Logo
16:05 - 11:30STL-SNN
14h 25m2 stops
Air Canada Logo
07:40 - 15:24SNN-STL
37h 44m2 stops
€676Air Canada
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Fri, 27 Mar - Tue, 31 Mar
Air Canada Logo
11:25 - 11:20STL-SNN
17h 55m3 stops
Air Canada Logo
21:15 - 15:24SNN-STL
24h 09m2 stops
€723Air Canada
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Thu, 2 Apr - Wed, 8 Apr
Multiple Airlines Logo
16:05 - 16:45STL-SNN
19h 40m2 stops
Multiple Airlines Logo
07:40 - 21:04SNN-STL
19h 24m3 stops
€728Multiple Airlines
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Wed, 25 Mar - Sat, 4 Apr
Lufthansa Logo
11:45 - 10:15STL-SNN
16h 30m1 stop
Lufthansa Logo
12:30 - 19:48SNN-STL
13h 18m1 stop
€743Lufthansa
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Thu, 2 Apr - Wed, 8 Apr
Lufthansa Logo
11:45 - 10:15STL-SNN
16h 30m1 stop
Lufthansa Logo
12:30 - 19:48SNN-STL
13h 18m1 stop
€788Lufthansa
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Wed, 15 Apr - Tue, 28 Apr

United Airlines flights from St. Louis to Shannon, Clare

Our best United Airlines deals on St. Louis to Shannon, Clare flight tickets
United Airlines
15 Apr
STL06:15Lambert-St Louis
22h 00m
2 stops
SNN10:15Shannon
28 Apr
SNN12:30Shannon
13h 18m
1 stop
STL19:48Lambert-St Louis
€467
Find similar
United Airlines
2 Apr
STL06:30Lambert-St Louis
21h 45m
2 stops
SNN10:15Shannon
8 Apr
SNN12:30Shannon
13h 18m
1 stop
STL19:48Lambert-St Louis
€603
Find similar

American Airlines flights from St. Louis to Shannon, Clare

Our best American Airlines deals on St. Louis to Shannon, Clare flight tickets
American Airlines
2 Apr
STL18:29Lambert-St Louis
15h 41m
2 stops
SNN16:10Shannon
8 Apr
SNN07:40Shannon
20h 08m
2 stops
STL21:48Lambert-St Louis
€505
Find similar
American Airlines
25 Mar
STL14:36Lambert-St Louis
15h 54m
2 stops
SNN11:30Shannon
4 Apr
SNN07:40Shannon
17h 22m
2 stops
STL19:02Lambert-St Louis
€596
Find similar
American Airlines
25 Mar
STL14:21Lambert-St Louis
16h 09m
2 stops
SNN11:30Shannon
4 Apr
SNN07:40Shannon
17h 22m
2 stops
STL19:02Lambert-St Louis
€597
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 8 November 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 15/4

06:15-10:15

2 stops22h 00m

Shannon

Tue 28/4

12:30-09:42

2 stops27h 12m

€467

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Thu 2/4

18:29-16:10

2 stops15h 41m

Shannon

Wed 8/4

07:40-21:48

2 stops20h 08m

€505

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Wed 25/3

14:36-11:30

2 stops15h 54m

Shannon

Sat 4/4

07:40-19:02

2 stops17h 22m

€596

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Wed 25/3

14:21-11:30

2 stops16h 09m

Shannon

Sat 4/4

07:40-19:02

2 stops17h 22m

€597

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Wed 25/3

16:05-11:30

2 stops38h 25m

Shannon

Sat 4/4

12:30-19:48

1 stop13h 18m

€668

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Fri 27/3

16:05-11:30

2 stops14h 25m

Shannon

Tue 31/3

07:40-15:24

2 stops37h 44m

€676

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Thu 2/4

11:25-11:20

3 stops17h 55m

Shannon

Wed 8/4

21:15-15:24

2 stops24h 09m

€723

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Wed 25/3

16:05-16:45

2 stops19h 40m

Shannon

Sat 4/4

07:40-21:04

3 stops19h 24m

€728

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Thu 2/4

11:45-10:15

1 stop16h 30m

Shannon

Wed 8/4

12:30-19:48

1 stop13h 18m

€743

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Wed 15/4

11:45-10:15

1 stop16h 30m

Shannon

Tue 28/4

12:30-19:48

1 stop13h 18m

€788

Flights are sorted by cheapest return flights first.

Showing 1-10 of 13 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 cheapest airline that flies from Lambert-St Louis to Shannon?

American 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

Direct flights

None
There are no direct flights from St. Louis to Shannon, Clare. There are no popular flight routes from St. Louis to Shannon, Clare.
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  • How far is Lambert-St Louis to Shannon by plane?

    Shannon is 6155.2 km away from Lambert-St Louis. 10h 59m 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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