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Shannon

$553+ Cheap flights from St. Louis (STL) to Shannon (SNN)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/13. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SNN
Jan 22 — Jan 291
Wed 1/22
Wed 1/29
1 adult, Economy
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Cheap flight deals from St. Louis to Shannon

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Shannon (SNN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 17, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$651
(American Airlines)

Popular in

March

Cheapest in

December

Average price

$790
Provider with most accurate pricing for Lambert-St Louis-Shannon flight deals.
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Provider most trusted by Cheapflights users for Lambert-St Louis-Shannon flights.
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From Lambert-St Louis to Shannon
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High demand for flights, 15% potential price rise
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Best time to find cheap flights, 5% potential price drop
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Average for round-trip flights in January 2025
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Find 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 January 17, 2025.

This American Airlines deal was found by Cheapflights users on 1/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/1512:00 pmSTL - SNN
2 stops17h 30mAmerican Airlines
Sun 3/27:45 amSNN - STL
2 stops20h 18mAmerican Airlines
Deal found 1/16$651
This United Airlines deal was found by Cheapflights users on 1/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/314:17 pmSTL - SNN
2 stops33h 13mUnited Airlines
Wed 9/109:30 amSNN - STL
1 stop15h 55mUnited Airlines
Deal found 1/16$717
This Air Canada deal was found by Cheapflights users on 1/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/151:03 pmSTL - SNN
3 stops16h 27mMultiple Airlines
Sun 3/27:45 amSNN - STL
2 stops37h 21mMultiple Airlines
Deal found 1/16$873
This Expedia deal was found by Cheapflights users on 1/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/211:30 amSTL - SNN
1 stop17h 00mLufthansa
Thu 6/1212:30 pmSNN - STL
1 stop16h 55mLufthansa
Deal found 1/15$1,077
This Air Canada deal was found by Cheapflights users on 1/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/161:30 pmSTL - SNN
2 stops20h 20mAir Canada
Sat 6/77:40 amSNN - STL
3 stops21h 05mAir Canada
Deal found 1/15$1,153
This Delta deal was found by Cheapflights users on 1/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/316:00 amSTL - SNN
2 stops23h 10mDelta
Tue 9/91:05 pmSNN - STL
2 stops25h 01mDelta
Deal found 1/15$3,797

Find flights from St. Louis to Shannon within your budget

Customize your flight search to find flights from St. Louis to Shannon 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, Cheapflights users made 2,558,603 searches. Data last updated January 17, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Sat 2/15

12:00 pm-11:30 am

2 stops17h 30m

Shannon

Sun 3/2

7:45 am-10:03 pm

2 stops20h 18m

$651

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Sat 2/15

1:03 pm-11:30 am

3 stops16h 27m

Shannon

Sun 3/2

7:45 am-3:06 pm

2 stops37h 21m

$873

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Mon 6/2

3:35 pm-7:30 am

1 stop9h 55m

Shannon

Thu 6/12

9:30 am-8:49 pm

2 stops17h 19m

$887

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Fri 5/16

1:30 pm-3:50 pm

2 stops20h 20m

Shannon

Sat 6/7

5:30 pm-3:16 pm

2 stops27h 46m

$1,052

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Mon 6/2

11:30 am-10:30 am

1 stop17h 00m

Shannon

Thu 6/12

12:30 pm-11:25 pm

1 stop16h 55m

$1,077

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Tue 5/13

3:44 pm-10:30 am

2 stops12h 46m

$553

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Wed 7/2

1:00 pm-11:20 am

2 stops16h 20m

$614

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Wed 7/2

3:30 pm-12:50 am

3 stops27h 20m

$665

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/16

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 January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

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

Travel insights for flights from St. Louis to Shannon

Get recent, data-driven insights about flights from St. Louis to Shannon including ideal travel times, pricing trends, and more.

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

Currently, February is the cheapest month in which you can book a flight from St. Louis to Shannon (average of $533). Flying from St. Louis to Shannon in June is currently the most expensive (average of $1,007). 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.

Rainfall in Shannon by month

Plan your trip to Shannon by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Shannon 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 when rainfall is around 2.3 in.

Temperature in Shannon by month

Plan your trip to Shannon by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Shannon, 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).

Reviews of airlines servicing Shannon

Get insights into the airlines that provide service to Shannon. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Shannon. Reviews last updated January 17, 2025.
American Airlines
7.2
Good
10,000 reviews

Overall

7.2

Boarding

7.6

Entertainment

7.0

Food

6.5

Crew

8.0

Comfort

7.3

Reviews

1 / 10

Due to gate changes,we nearly missed our flight. The gate agent reassigned our seats and would NOT give us our assigned seats,but she did honor that same request to the man who arrived after us. Her rudeness and difficulty was not appropriate.

American Airlines
7.2
Good
10,000 reviews
American Airlines
7.2
Good
10,000 reviews

Overall

7.2

Boarding

7.6

Entertainment

7.0

Food

6.5

Crew

8.0

Comfort

7.3

Reviews

1 / 10

Due to gate changes,we nearly missed our flight. The gate agent reassigned our seats and would NOT give us our assigned seats,but she did honor that same request to the man who arrived after us. Her rudeness and difficulty was not appropriate.

Air Canada
7.0
Good
8,587 reviews
American Airlines
7.2
Good
10,000 reviews

Overall

7.2

Boarding

7.6

Entertainment

7.0

Food

6.5

Crew

8.0

Comfort

7.3

Reviews

1 / 10

Due to gate changes,we nearly missed our flight. The gate agent reassigned our seats and would NOT give us our assigned seats,but she did honor that same request to the man who arrived after us. Her rudeness and difficulty was not appropriate.

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.

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

    According to our current data, American Airlines ($651), and Air Canada ($1,241) offers the cheapest pricing from St. Louis to Shannon. American Airlines is priced at 33% 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?

    Currently, February is the cheapest month in which you can book a flight from St. Louis to Shannon (average of $533). Flying from St. Louis to Shannon in June is currently the most expensive (average of $1,007). 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.

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Top 3 airlines flying from St. Louis to Shannon

Discover the top 3 airlines that operate flights from St. Louis to Shannon. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$542Average$1,085FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$544Average$883FlexibilityNo cancel feeOn-time71%
LufthansaCheapest$877Average$1,125FlexibilityNo cancel feeOn-time76%
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