How long is the flight from St. Louis to Shannon, Clare?

Departing from St. Louis to Shannon, Clare will take you 14h 36m. The distance between St. Louis and Shannon, Clare is about 3824 mi. This flight may include one or multiple stops.

What are the cheapest airlines flying from St. Louis to Shannon, Clare round-trip?

Cheapflights users have booked flights from St. Louis to Shannon, Clare round-trip from $548. Another airline that can offer you cheap pricing is United Airlines. American Airlines is priced at 29% lower than the current average price of a flight leaving 3 months from now.

In terms of precipitation, rainfall in Shannon, Clare ranges from 2.3 - 4.1 inches per month. October is typically the wettest month, when rainfall can reach 4.1 in. April is typically the driest time to visit Shannon, Clare when rainfall is around 2.3 in.

If weather is an important factor for your trip to Shannon, Clare, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 60.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 42.8 F).

What is the cheapest time of day to fly from STL to SNN?

When flying from St. Louis to Shannon, Clare, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Most accurate provider : When it comes to deals on St. Louis-Shannon, Clare flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on St. Louis-Shannon, Clare flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from St. Louis-Shannon, Clare flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on St. Louis-Shannon, Clare flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Shannon, Clare flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Can I find deals for flights from St. Louis to Shannon that include hotel bookings?

Yes. In addition to deals on St. Louis to Shannon flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from St. Louis to Shannon?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Shannon.

Can I find deals for business class flights from St. Louis to Shannon?

Yes. Cheapflights offers flight deals from St. Louis to Shannon by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$484+ Flights from St. Louis to Shannon

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from St. Louis to Shannon with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from St. Louis to Shannon

Cheapest flights from St. Louis to Shannon
Explore the most affordable flight options available from St. Louis to Shannon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.

Wed 12/102:48 pmSTL - SNN

2 stops14h 42mMultiple Airlines

Wed 12/177:50 amSNN - STL

2 stops31h 41mMultiple Airlines

Deal found 12/9

$1,151

Wed 12/101:43 pmSTL - SNN

2 stops15h 47mAmerican Airlines

Wed 12/172:45 pmSNN - STL

1 stop24h 46mAmerican Airlines

Deal found 12/9

$1,166

Wed 12/104:05 pmSTL - SNN

2 stops18h 40mAir Canada

Wed 12/177:50 amSNN - STL

3 stops19h 50mAir Canada

Deal found 12/9

$1,472

Best flights from St. Louis to Shannon
Discover carefully curated flight deals from St. Louis to Shannon that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 12, 2025.

Wed 1/146:44 pmSTL - SNN

2 stops16h 01mAmerican Airlines

Wed 1/217:50 amSNN - STL

2 stops19h 25mAmerican Airlines

Deal found 12/10

$484

Wed 1/282:54 pmSTL - SNN

2 stops14h 36mBritish Airways

Tue 2/37:50 amSNN - STL

2 stops16h 26mBritish Airways

Deal found 12/10

$658

Thu 1/294:05 pmSTL - SNN

2 stops18h 40mAir Canada

Sat 2/77:50 amSNN - STL

2 stops37h 39mAir Canada

Deal found 12/10

$682

Wed 1/2812:11 pmSTL - SNN

2 stops17h 19mAmerican Airlines

Wed 2/47:50 amSNN - STL

2 stops21h 22mAmerican Airlines

Deal found 12/10

$484

Thu 1/292:54 pmSTL - SNN

2 stops14h 36mBritish Airways

Tue 2/37:50 amSNN - STL

2 stops16h 26mBritish Airways

Deal found 12/10

$658

Sun 1/254:05 pmSTL - SNN

2 stops37h 25mAir Canada

Tue 2/35:30 pmSNN - STL

2 stops51h 59mAir Canada

Deal found 12/10

$682

Wed 1/282:54 pmSTL - SNN

2 stops14h 36mBritish Airways

Thu 2/57:50 amSNN - STL

2 stops16h 24mBritish Airways

Deal found 12/10

$658

Wed 3/184:32 pmSTL - SNN

2 stops13h 58mAmerican Airlines

Mon 3/232:00 pmSNN - STL

2 stops24h 15mAmerican Airlines

Deal found 12/10

$669

Tue 1/272:54 pmSTL - SNN

2 stops14h 36mBritish Airways

Tue 2/37:50 amSNN - STL

2 stops16h 26mBritish Airways

Deal found 12/10

$658

Thu 1/292:54 pmSTL - SNN

2 stops14h 36mBritish Airways

Wed 2/47:50 amSNN - STL

2 stops16h 24mBritish Airways

Deal found 12/10

$658

Thu 1/292:54 pmSTL - SNN

2 stops14h 36mBritish Airways

Thu 2/57:50 amSNN - STL

2 stops16h 24mBritish Airways

Deal found 12/10

$658

Last-minute flights from St. Louis to Shannon
Discover last-minute flight deals from St. Louis to Shannon. Data last updated December 12, 2025 and is based on user searches.

Wed 1/146:44 pmSTL - SNN

2 stops16h 01mAmerican Airlines

Wed 1/217:50 amSNN - STL

2 stops19h 25mAmerican Airlines

Deal found 12/10

$484

Wed 1/149:57 amSTL - SNN

3 stops19h 33mMultiple Airlines

Wed 1/217:50 amSNN - STL

2 stops37h 39mMultiple Airlines

Deal found 12/10

$787

Wed 1/149:57 amSTL - SNN

3 stops19h 33mAir Canada

Wed 1/217:50 amSNN - STL

3 stops19h 23mAir Canada

Deal found 12/10

$797

Sun 1/254:05 pmSTL - SNN

2 stops37h 25mAir Canada

Fri 2/67:50 amSNN - STL

2 stops37h 39mAir Canada

Deal found 12/10

$682

Tue 1/272:54 pmSTL - SNN

2 stops14h 36mBritish Airways

Thu 2/57:50 amSNN - STL

2 stops16h 24mBritish Airways

Deal found 12/10

$658

Wed 1/282:54 pmSTL - SNN

2 stops14h 36mAmerican Airlines

Wed 2/42:45 pmSNN - STL

1 stop24h 18mAmerican Airlines

Deal found 12/10

$685

Wed 1/2811:20 amSTL - SNN

3 stops18h 10mMultiple Airlines

Wed 2/47:50 amSNN - STL

2 stops37h 39mMultiple Airlines

Deal found 12/10

$687

Sat 1/314:05 pmSTL - SNN

2 stops42h 40mAir Canada

Thu 2/57:50 amSNN - STL

2 stops37h 39mAir Canada

Deal found 12/10

$1,351

Sat 1/314:05 pmSTL - SNN

2 stops18h 40mAir Canada

Mon 2/25:30 pmSNN - STL

2 stops51h 45mAir Canada

Deal found 12/10

$1,386

One-way flights from St. Louis to Shannon
Search for one-way flight options from St. Louis to Shannon. Find affordable one-way fares based on user searches. Data last updated December 12, 2025.

Mon 5/254:23 pmSTL - SNN

2 stops36h 57mAer Lingus

Deal found 12/11

$3,117

Mon 5/255:00 pmSTL - SNN

1 stop12h 10mAir France

Deal found 12/11

$3,495

Find flight deals from St. Louis to Shannon

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$484 (American Airlines)
Popular in	June
Cheapest in	December
Average price	$483

Provider with most accurate pricing for Lambert-St Louis-Shannon flight deals.

Search Deals

Provider most trusted by Cheapflights users for Lambert-St Louis-Shannon flights.

Search Deals

From Lambert-St Louis to Shannon

Search Deals

Highest demand for flights based on searches. 15% potential increase in price ($142 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease ($34 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Wed 1/14

6:44 pm-4:45 pm

2 stops16h 01m

Shannon

Wed 1/21

7:50 am-9:15 pm

2 stops19h 25m

$484

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Wed 1/28

12:11 pm-11:30 am

2 stops17h 19m

Shannon

Wed 2/4

7:50 am-11:12 pm

2 stops21h 22m

$484

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Wed 1/28

2:54 pm-11:30 am

2 stops14h 36m

Shannon

Tue 2/3

7:50 am-6:16 pm

2 stops16h 26m

$658

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Thu 1/29

2:54 pm-11:30 am

2 stops14h 36m

Shannon

Tue 2/3

7:50 am-6:16 pm

2 stops16h 26m

$658

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Wed 1/28

2:54 pm-11:30 am

2 stops14h 36m

Shannon

Thu 2/5

7:50 am-6:14 pm

2 stops16h 24m

$658

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Tue 1/27

2:54 pm-11:30 am

2 stops14h 36m

Shannon

Tue 2/3

7:50 am-6:16 pm

2 stops16h 26m

$658

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Thu 1/29

2:54 pm-11:30 am

2 stops14h 36m

Shannon

Wed 2/4

7:50 am-6:14 pm

2 stops16h 24m

$658

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Thu 1/29

2:54 pm-11:30 am

2 stops14h 36m

Shannon

Thu 2/5

7:50 am-6:14 pm

2 stops16h 24m

$658

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Wed 3/18

4:32 pm-11:30 am

2 stops13h 58m

Shannon

Mon 3/23

2:00 pm-9:15 am

2 stops24h 15m

$669

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Thu 1/29

4:05 pm-4:45 pm

2 stops18h 40m

Shannon

Sat 2/7

7:50 am-3:29 pm

2 stops37h 39m

$682

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/11

Showing 1-10 of 13 results

Compare providers for flights from St. Louis to Shannon

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Shannon in December.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy2 stars	Trust Score*3 stars
AranGrant	Price Accuracy2 stars	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on St. Louis-Shannon, Clare flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on St. Louis-Shannon, Clare flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from St. Louis-Shannon, Clare flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on St. Louis-Shannon, Clare flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Shannon, Clare flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from St. Louis to Shannon

Have a flexible travel schedule? Discover the best time to fly to Shannon from St. Louis with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Shannon

What is the cheapest month to book a flight from St. Louis to Shannon, Clare?

Currently, December is the cheapest month in which you can book a flight from St. Louis to Shannon, Clare (average of $483). Flying from St. Louis to Shannon, Clare in June is currently the most expensive (average of $752). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Shannon

See what other customers who have flown with United Airlines and American Airlines from St. Louis to Shannon have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

United Airlines

7.4

Good

9,095 reviews

Reviews

1 / 20

10.0

Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.

United Airlines

7.4

Good

9,095 reviews

United Airlines

7.4

Good

9,095 reviews

Reviews

1 / 20

10.0

Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.

American Airlines

7.2

Good

11,050 reviews

United Airlines

7.4

Good

9,095 reviews

Reviews

1 / 20

10.0

Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.

Related info for your journey

How long is the flight from St. Louis to Shannon, Clare?
Departing from St. Louis to Shannon, Clare will take you 14h 36m. The distance between St. Louis and Shannon, Clare is about 3824 mi. This flight may include one or multiple stops.
What are the cheapest airlines flying from St. Louis to Shannon, Clare round-trip?
Cheapflights users have booked flights from St. Louis to Shannon, Clare round-trip from $548. Another airline that can offer you cheap pricing is United Airlines. American Airlines is priced at 29% lower than the current average price of a flight leaving 3 months from now.
Can I find deals for flights from St. Louis to Shannon that include hotel bookings?
Yes. In addition to deals on St. Louis to Shannon flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from St. Louis to Shannon?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Shannon.
Can I find deals for business class flights from St. Louis to Shannon?
Yes. Cheapflights offers flight deals from St. Louis to Shannon by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from St. Louis to Shannon, Clare?
Currently, December is the cheapest month in which you can book a flight from St. Louis to Shannon, Clare (average of $483). Flying from St. Louis to Shannon, Clare in June is currently the most expensive (average of $752). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Ennis

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for St. Louis to Shannon

Kansas City to Dublin flights

St. Louis to Dublin flights

St. Louis to Cork flights

Springfield to Dublin flights

Columbia to Dublin flights

Kansas City to Shannon flights

Springfield to Shannon flights

Kansas City to Cork flights

Cape Girardeau to Dublin flights

Columbia to Shannon flights

Kansas City to Milltown (Kerry) flights

St. Louis to Milltown (Kerry) flights

Other flights to Shannon

John F Kennedy Intl to Shannon flights

Boston to Shannon flights

Newark to Shannon flights

O'Hare Intl to Shannon flights

Shannon, Clare to Edinburgh flights

Shannon, Clare to London Heathrow Airport flights

Shannon, Clare to Boston flights

Shannon, Clare to New York John F Kennedy Intl Airport flights

Top 2 airlines flying from St. Louis to Shannon

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest$548	Average$821	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$596	Average$895	FlexibilityNo cancel fee	On-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$484+ Cheap flights from St. Louis (STL) to Shannon (SNN)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/14. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from St. Louis to Shannon with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from St. Louis to Shannon

Cheapest flights from St. Louis to ShannonExplore the most affordable flight options available from St. Louis to Shannon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.

Explore the most affordable flight options available from St. Louis to Shannon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.

Find flight deals from St. Louis to Shannon

Most accurate provider

Most trusted provider

Round-trip from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

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

Compare providers for flights from St. Louis to Shannon

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Shannon in December.

Best time to book a flight from St. Louis to Shannon

Have a flexible travel schedule? Discover the best time to fly to Shannon from St. Louis with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Shannon

What is the cheapest month to book a flight from St. Louis to Shannon, Clare?

Reviews of airlines servicing Shannon

See what other customers who have flown with United Airlines and American Airlines from St. Louis to Shannon have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Shannon. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

How long is the flight from St. Louis to Shannon, Clare?

What are the cheapest airlines flying from St. Louis to Shannon, Clare round-trip?

Can I find deals for flights from St. Louis to Shannon that include hotel bookings?

How can I find direct flights from St. Louis to Shannon?

Can I find deals for business class flights from St. Louis to Shannon?

What is the cheapest month to book a flight from St. Louis to Shannon, Clare?

Traveling to a place near Shannon?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for St. Louis to Shannon

See prices for flight routes from nearby airports that may be better suited for you.

Top 2 airlines flying from St. Louis to Shannon

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from St. Louis to Shannon
Explore the most affordable flight options available from St. Louis to Shannon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.