What is the cheapest airline that flies from Lambert-St Louis to Shannon?

United Airlines is the most popular carrier operating from Lambert-St Louis to Shannon

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 updated daily.

How many operators does momondo search for flights from Lambert-St Louis Airport to Shannon Airport?

The number of operators available for flights from Lambert-St Louis Airport to Shannon Airport is 1 as of September 2026.

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 that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check 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 you'll need for your trip to Shannon Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Shannon Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$484 Cheap Flights from St. Louis to Shannon, Clare in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Shannon

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:30 am - 10:15 amSTL Lambert-St Louis-SNN Shannon

20h 45m1 stop Newark

12:30 pm - 9:09 pmSNN Shannon-STL Lambert-St Louis

14h 39m1 stop Newark

$619United Airlines

Tue, Oct 13 - Tue, Oct 20

1:29 pm - 10:15 amSTL Lambert-St Louis-SNN Shannon

14h 46m2 stops Chicago O'Hare Intl Newark

12:30 pm - 10:10 amSNN Shannon-STL Lambert-St Louis

27h 40m2 stops Newark Houston George Bush Intcntl

$624United Airlines

Tue, Oct 13 - Tue, Oct 20

4:50 pm - 10:15 amSTL Lambert-St Louis-SNN Shannon

11h 25m1 stop Newark

12:30 pm - 10:10 amSNN Shannon-STL Lambert-St Louis

27h 40m2 stops Newark Houston George Bush Intcntl

$624United Airlines

Tue, Oct 13 - Tue, Oct 20

7:30 am - 10:15 amSTL Lambert-St Louis-SNN Shannon

20h 45m1 stop Newark

12:30 pm - 9:09 pmSNN Shannon-STL Lambert-St Louis

14h 39m1 stop Newark

$754United Airlines

Thu, Oct 8 - Thu, Oct 15

7:30 am - 10:15 amSTL Lambert-St Louis-SNN Shannon

20h 45m1 stop Newark

12:30 pm - 12:13 pmSNN Shannon-STL Lambert-St Louis

29h 43m2 stops Newark Chicago O'Hare Intl

$759United Airlines

Thu, Oct 8 - Thu, Oct 15

5:27 pm - 7:25 pmSTL Lambert-St Louis-SNN Shannon

20h 58m2 stops Chicago O'Hare Intl London Heathrow

8:05 pm - 9:57 pmSNN Shannon-STL Lambert-St Louis

31h 52m2 stops London Heathrow Charlotte Douglas

$766British Airways

Mon, Oct 26 - Mon, Nov 2

1:20 pm - 11:30 amSTL Lambert-St Louis-SNN Shannon

16h 10m2 stops Chicago O'Hare Intl London Heathrow

2:00 pm - 10:15 pmSNN Shannon-STL Lambert-St Louis

14h 15m2 stops Boston Logan Intl Chicago O'Hare Intl

$776American Airlines

Mon, Nov 2 - Tue, Nov 17

9:50 am - 5:50 amSTL Lambert-St Louis-SNN Shannon

14h 00m1 stop Boston Logan Intl

2:00 pm - 9:16 amSNN Shannon-STL Lambert-St Louis

25h 16m1 stop Boston Logan Intl

$779American Airlines

Mon, Nov 2 - Tue, Nov 17

9:50 am - 5:50 amSTL Lambert-St Louis-SNN Shannon

14h 00m1 stop Boston Logan Intl

2:00 pm - 11:59 pmSNN Shannon-STL Lambert-St Louis

15h 59m2 stops Boston Logan Intl Chicago O'Hare Intl

$784American Airlines

Mon, Nov 2 - Tue, Nov 17

7:30 am - 10:15 amSTL Lambert-St Louis-SNN Shannon

20h 45m1 stop Newark

12:30 pm - 12:13 pmSNN Shannon-STL Lambert-St Louis

29h 43m3 stops Newark Houston George Bush Intcntl Chicago O'Hare Intl

$803United Airlines

Thu, Oct 8 - Thu, Oct 15

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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

Oct 13

STL7:30 amLambert-St Louis

20h 45m

1 stop

SNN10:15 amShannon

Oct 20

SNN12:30 pmShannon

14h 39m

1 stop

STL9:09 pmLambert-St Louis

$619

United Airlines

Oct 13

STL4:50 pmLambert-St Louis

11h 25m

1 stop

SNN10:15 amShannon

Oct 20

SNN12:30 pmShannon

27h 40m

2 stops

STL10:10 amLambert-St Louis

$624

United Airlines

Oct 8

STL7:30 amLambert-St Louis

20h 45m

1 stop

SNN10:15 amShannon

Oct 15

SNN12:30 pmShannon

14h 39m

1 stop

STL9:09 pmLambert-St Louis

$754

British Airways flights from St. Louis to Shannon, Clare

Our best British Airways deals on St. Louis to Shannon, Clare flight tickets

British Airways

Oct 26

STL5:27 pmLambert-St Louis

20h 58m

2 stops

SNN7:25 pmShannon

Nov 2

SNN8:05 pmShannon

31h 52m

2 stops

STL9:57 pmLambert-St Louis

$766

British Airways

Mar 12

STL1:06 pmLambert-St Louis

16h 24m

2 stops

SNN11:30 amShannon

Mar 20

SNN2:00 pmShannon

26h 08m

2 stops

STL11:08 amLambert-St Louis

$963

British Airways

Dec 20

STL4:32 pmLambert-St Louis

12h 58m

2 stops

SNN11:30 amShannon

Dec 27

SNN7:50 amShannon

18h 02m

2 stops

STL7:52 pmLambert-St Louis

$1,392

momondo Fare Finder

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 round-trip

St. LouisShannon

STL Lambert-St Louis - SNN Shannon

STLSNN

Lambert-St Louis

Tue 10/13

7:30 am-10:15 am

1 stop20h 45m

Shannon

Tue 10/20

12:30 pm-9:09 pm

1 stop14h 39m

$619

St. LouisShannon

STL Lambert-St Louis - SNN Shannon

STLSNN

Lambert-St Louis

Tue 10/13

1:29 pm-10:15 am

2 stops14h 46m

Shannon

Tue 10/20

12:30 pm-10:10 am

2 stops27h 40m

$624

St. LouisShannon

STL Lambert-St Louis - SNN Shannon

STLSNN

Lambert-St Louis

Tue 10/13

4:50 pm-10:15 am

1 stop11h 25m

Shannon

Tue 10/20

12:30 pm-10:10 am

2 stops27h 40m

$624

St. LouisShannon

STL Lambert-St Louis - SNN Shannon

STLSNN

Lambert-St Louis

Thu 10/8

7:30 am-10:15 am

1 stop20h 45m

Shannon

Thu 10/15

12:30 pm-9:09 pm

1 stop14h 39m

$754

St. LouisShannon

STL Lambert-St Louis - SNN Shannon

STLSNN

Lambert-St Louis

Thu 10/8

7:30 am-10:15 am

1 stop20h 45m

Shannon

Thu 10/15

12:30 pm-12:13 pm

2 stops29h 43m

$759

St. LouisShannon

STL Lambert-St Louis - SNN Shannon

STLSNN

Lambert-St Louis

Mon 10/26

5:27 pm-7:25 pm

2 stops20h 58m

Shannon

Mon 11/2

8:05 pm-9:57 pm

2 stops31h 52m

$766

St. LouisShannon

STL Lambert-St Louis - SNN Shannon

STLSNN

Lambert-St Louis

Mon 11/2

1:20 pm-11:30 am

2 stops16h 10m

Shannon

Tue 11/17

2:00 pm-10:15 pm

2 stops14h 15m

$776

St. LouisShannon

STL Lambert-St Louis - SNN Shannon

STLSNN

Lambert-St Louis

Mon 11/2

9:50 am-5:50 am

1 stop14h 00m

Shannon

Tue 11/17

2:00 pm-9:16 am

1 stop25h 16m

$779

Quickest round-trip

St. LouisShannon

STL Lambert-St Louis - SNN Shannon

STLSNN

Lambert-St Louis

Mon 11/2

9:50 am-5:50 am

1 stop14h 00m

Shannon

Tue 11/17

2:00 pm-11:59 pm

2 stops15h 59m

$784

St. LouisShannon

STL Lambert-St Louis - SNN Shannon

STLSNN

Lambert-St Louis

Thu 10/8

7:30 am-10:15 am

1 stop20h 45m

Shannon

Thu 10/15

12:30 pm-12:13 pm

3 stops29h 43m

$803

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 resultsSorted by cheapest first

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

Prices

Airlines

What is the typical price of a round-trip flight between St. Louis and Shannon, Clare?

Prices are currently low for flights on this route.

Typical prices usually range from $738 to $852.
The lowest price recently found on this route was $619.

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

In general, February is the cheapest month to fly from St. Louis to Shannon, Clare. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $0. If you are unable to visit Shannon, Clare during the month of February, then departing from St. Louis during the month January is also very affordable. Most momondo users find prices during this month for around $0.

Can stopping save me money on St. Louis to Shannon, Clare flights?

You could potentially save up to 65% on your flight if you consider stops on a St. Louis to Shannon, Clare flight.

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 round-trip 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

Best Price Found	$484
Fastest flight time	14h 37m
Direct flights	None

The best one-way flight to Shannon, Clare from St. Louis in the past 72 hours is $484. The best round-trip flight deal from St. Louis to Shannon, Clare found on momondo in the last 72 hours is $619.

The fastest flight from St. Louis to Shannon, Clare takes 14h 37m

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?
The straight-line distance from Lambert-St Louis to Shannon is 3824.7 mi. By plane, this route typically takes 14h 37m.
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 updated daily.
How many operators does momondo search for flights from Lambert-St Louis Airport to Shannon Airport?
The number of operators available for flights from Lambert-St Louis Airport to Shannon Airport is 1 as of September 2026.
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 that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check 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 you'll need for your trip to Shannon Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Shannon Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from St. Louis to Shannon, Clare?
Based on momondo bookings for flights between St. Louis and Shannon, Clare, the leading airline is United Airlines, making up 100% of the total bookings.

Best airlines flying from St. Louis to Shannon, Clare

Compare and see reviews for airlines that fly from St. Louis to Shannon, Clare with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $596	Free Cancellation	Rating 7.4 10,214 reviews		Search United Airlines flights

Limerick

Ennis

Adare

Bunratty

Lahinch

Tipperary

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Shannon?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from St. Louis to Shannon. momondo saves you time and could save you money on your trip.

Can I find flights from St. Louis to Shannon with flexible booking policies on momondo?

Yes. All flights to Shannon from St. Louis on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from St. Louis to Shannon?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Shannon from St. Louis.

I’m not ready to book a flight from St. Louis to Shannon right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Shannon from St. Louis. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Shannon, Clare trip

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Cheap flights from St. Louis to Shannon from $484

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 3/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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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

British Airways flights from St. Louis to Shannon, Clare

Our best British Airways deals on St. Louis to Shannon, Clare flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from St. Louis to Shannon, Clare that are best for you.

See travel insights to Shannon from

How to get the cheapest flight ticket from St. Louis to Shannon, Clare

What is the typical price of a round-trip flight between St. Louis and Shannon, Clare?

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

Can stopping save me money on St. Louis to Shannon, Clare flights?

What is the cheapest airline that flies from Lambert-St Louis to Shannon?

When to book flights from St. Louis to Shannon, Clare

Cheap St. Louis to Shannon, Clare (STL to SNN) flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from St. Louis to Shannon, Clare

Best airlines flying from St. Louis to Shannon, Clare

Compare and see reviews for airlines that fly from St. Louis to Shannon, Clare with momondo

Traveling to a place near Shannon?

Why use momondo?

An easier way to manage your Shannon, Clare trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Ireland

Airports servicing Ireland

Fly your favorite airline to Shannon

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Shannon

List of cabin classes available on flights landing in Shannon. Availability may vary depending on flight origin and airline.

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