HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news

Cheap flights from St. Louis (STL) to Shannon (SNN) from $577

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 8/23. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
STL — SNN
Jun 7 — Jun 141
From?
To?
Fri 6/7
Fri 6/14
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

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 June 2, 2024.

Round-trip from

$533
From Lambert-St Louis to Shannon
Search Deals

What is the cheapest day to fly round-trip from St. Louis to Shannon?

Leaving on a Monday is a viable option for saving on travel. Heavily demanded days of the week can typically drive up the prices you see. Booking your travel for a less competitive day can save up to 61% on the overall cost on flights from St. Louis to Shannon.

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

When flying from St. Louis to Shannon, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 14% versus a flight in the morning.

Cheap American Airlines flights from St. Louis to Shannon

Explore cheap flight options specifically provided by American Airlines for the route between St. Louis and Shannon. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,810,401 searches. Data last updated June 2, 2024.
Find some of the cheapest American Airlines flights traveling from St. Louis to Shannon. Come back soon if you're not finding the exact deal you're looking for.
Fri 10/256:26 pmSTL - SNN
2 stops15h 19mAmerican Airlines
Sat 11/27:45 amSNN - STL
2 stops17h 22mAmerican Airlines
Deal found 6/1$629
Thu 9/1212:52 pmSTL - SNN
2 stops16h 28mAmerican Airlines
Mon 9/239:25 pmSNN - STL
2 stops24h 12mAmerican Airlines
Deal found 6/1$770
Fri 8/237:02 pmSTL - SNN
1 stop28h 33mAmerican Airlines
Mon 9/21:45 pmSNN - STL
1 stop25h 29mAmerican Airlines
Deal found 5/31$787
Fri 10/2510:45 amSTL - SNN
1 stop12h 50mAmerican Airlines
Sat 11/22:00 pmSNN - STL
2 stops24h 09mAmerican Airlines
Deal found 6/1$796
Wed 7/35:38 pmSTL - SNN
2 stops16h 32mAmerican Airlines
Mon 7/159:25 pmSNN - STL
2 stops23h 01mAmerican Airlines
Deal found 6/1$799
Fri 7/57:03 amSTL - SNN
2 stops17h 02mAmerican Airlines
Sun 7/149:25 pmSNN - STL
2 stops32h 29mAmerican Airlines
Deal found 6/1$913
Fri 9/2711:38 amSTL - SNN
1 stop11h 57mAmerican Airlines
Thu 10/31:45 pmSNN - STL
1 stop10h 30mAmerican Airlines
Deal found 6/2$919
Fri 9/277:30 amSTL - SNN
2 stops16h 35mAmerican Airlines
Thu 10/31:45 pmSNN - STL
2 stops16h 08mAmerican Airlines
Deal found 6/2$924
Fri 8/3011:09 amSTL - SNN
1 stop12h 26mAmerican Airlines
Tue 9/101:45 pmSNN - STL
1 stop10h 30mAmerican Airlines
Deal found 6/1$948

Cheap United Airlines flights from St. Louis to Shannon

Explore cheap flight options specifically provided by United Airlines for the route between St. Louis and Shannon. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,810,401 searches. Data last updated June 2, 2024.
To aid your search, here are some of the cheapest United Airlines flights we've found from St. Louis to Shannon. Deals are refreshing constantly so come back soon for more options.
Wed 9/45:32 pmSTL - SNN
1 stop10h 58mUnited Airlines
Wed 9/119:30 amSNN - STL
1 stop12h 19mUnited Airlines
Deal found 6/2$669
Wed 9/411:10 amSTL - SNN
2 stops17h 20mUnited Airlines
Wed 9/1112:30 pmSNN - STL
2 stops27h 21mUnited Airlines
Deal found 6/2$674
Tue 8/275:32 pmSTL - SNN
1 stop10h 58mUnited Airlines
Sat 9/79:30 amSNN - STL
1 stop18h 22mUnited Airlines
Deal found 6/1$719
Fri 8/233:35 pmSTL - SNN
1 stop9h 55mUnited Airlines
Tue 9/312:30 pmSNN - STL
2 stops15h 43mUnited Airlines
Deal found 6/1$724
Fri 8/2311:10 amSTL - SNN
1 stop14h 20mUnited Airlines
Mon 9/29:30 amSNN - STL
1 stop16h 17mUnited Airlines
Deal found 6/1$769
Fri 8/2312:55 pmSTL - SNN
1 stop12h 35mUnited Airlines
Mon 9/29:30 amSNN - STL
2 stops19h 26mUnited Airlines
Deal found 6/1$774
Tue 7/2311:25 amSTL - SNN
1 stop14h 05mUnited Airlines
Wed 7/319:30 amSNN - STL
1 stop12h 10mUnited Airlines
Deal found 6/1$841
Tue 7/236:08 amSTL - SNN
2 stops19h 22mUnited Airlines
Wed 7/319:30 amSNN - STL
1 stop13h 42mUnited Airlines
Deal found 6/1$846
Fri 8/306:34 amSTL - SNN
1 stop18h 56mUnited Airlines
Tue 9/109:30 amSNN - STL
1 stop11h 23mUnited Airlines
Deal found 6/1$891

St. Louis to Shannon 2024 flight deals

Discover exclusive flight deals for travel between St. Louis and Shannon in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,810,401 searches. Data last updated June 2, 2024.
Scroll through some of the best deals on flights from St. Louis to Shannon in 2024. Check back in a little while for more flight options.
Fri 8/2310:08 amSTL - SNN
2 stops18h 42mKLM
Tue 9/312:50 pmSNN - STL
2 stops16h 49mKLM
Deal found 6/1$577
Fri 10/256:26 pmSTL - SNN
2 stops15h 19mAmerican Airlines
Sat 11/27:45 amSNN - STL
2 stops17h 22mAmerican Airlines
Deal found 6/1$629
Wed 9/45:32 pmSTL - SNN
1 stop10h 58mUnited Airlines
Wed 9/119:30 amSNN - STL
1 stop12h 19mUnited Airlines
Deal found 6/2$669
Wed 9/411:10 amSTL - SNN
2 stops17h 20mUnited Airlines
Wed 9/1112:30 pmSNN - STL
2 stops27h 21mUnited Airlines
Deal found 6/2$674
Tue 8/275:32 pmSTL - SNN
1 stop10h 58mUnited Airlines
Sat 9/79:30 amSNN - STL
1 stop18h 22mUnited Airlines
Deal found 6/1$719
Fri 8/233:35 pmSTL - SNN
1 stop9h 55mUnited Airlines
Tue 9/312:30 pmSNN - STL
2 stops15h 43mUnited Airlines
Deal found 6/1$724
Fri 10/2510:10 amSTL - SNN
2 stops23h 35mMultiple Airlines
Sat 11/27:45 amSNN - STL
3 stops32h 08mMultiple Airlines
Deal found 6/1$751
Fri 10/2512:00 pmSTL - SNN
2 stops21h 45mAir Canada
Sat 11/27:45 amSNN - STL
3 stops18h 36mAir Canada
Deal found 6/2$755
Fri 8/2311:10 amSTL - SNN
1 stop14h 20mUnited Airlines
Mon 9/29:30 amSNN - STL
1 stop16h 17mUnited Airlines
Deal found 6/1$769

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 2,810,401 searches. Data last updated June 2, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$577 - $797

Route

Depart

Return

Price

Lambert-St LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Fri 8/23

2 stops18h 42m

Shannon

Tue 9/3

2 stops16h 49m

$577

Lambert-St LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Fri 10/25

2 stops15h 19m

Shannon

Sat 11/2

2 stops17h 22m

$629

Lambert-St LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Wed 9/4

1 stop10h 58m

Shannon

Wed 9/11

1 stop12h 19m

$669

Lambert-St LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Wed 9/4

2 stops17h 20m

Shannon

Wed 9/11

2 stops27h 21m

$674

Lambert-St LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Tue 8/27

1 stop10h 58m

Shannon

Sat 9/7

1 stop18h 22m

$719

Lambert-St LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Fri 10/25

2 stops23h 35m

Shannon

Sat 11/2

3 stops32h 08m

$751

Lambert-St LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Fri 10/25

2 stops21h 45m

Shannon

Sat 11/2

3 stops18h 36m

$755

Lambert-St LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Thu 9/12

2 stops16h 28m

Shannon

Mon 9/23

2 stops24h 12m

$770

Lambert-St LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Tue 7/23

2 stops22h 44m

Shannon

Wed 7/31

2 stops26h 12m

$797

Flights are sorted by cheapest first

Deals found on 6/1

What is the cheapest day to fly from St. Louis to Shannon?

Use this chart to determine the cheapest time to fly round-trip from St. Louis to Shannon. Price data was last updated on May 26, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their St. Louis to Shannon flight should consider departing on Tuesday at noon when fares are most often at their lowest. Friday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

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.

Temperature and rainfall in Shannon by month

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

SNN

Temperature

42.8 - 60.8 °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 June 2, 2024.
Get a feel of what it's like to fly with American Airlines, United Airlines and Air Canada from St. Louis to Shannon by reading reviews from past customers. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
10,410 reviews
Check prices

Crew

8.6

Entertainment

8.0

Boarding

8.2

Comfort

7.9

Food

7.4

Overall

8.0

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Delta
8.0
Very good
10,410 reviews
Delta
8.0
Very good
10,410 reviews
Check prices

Crew

8.6

Entertainment

8.0

Boarding

8.2

Comfort

7.9

Food

7.4

Overall

8.0

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

KLM
7.9
Good
1,507 reviews
Delta
8.0
Very good
10,410 reviews
Check prices

Crew

8.6

Entertainment

8.0

Boarding

8.2

Comfort

7.9

Food

7.4

Overall

8.0

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

United Airlines
7.4
Good
10,755 reviews
Delta
8.0
Very good
10,410 reviews
Check prices

Crew

8.6

Entertainment

8.0

Boarding

8.2

Comfort

7.9

Food

7.4

Overall

8.0

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

American Airlines
7.3
Good
14,260 reviews
Delta
8.0
Very good
10,410 reviews
Check prices

Crew

8.6

Entertainment

8.0

Boarding

8.2

Comfort

7.9

Food

7.4

Overall

8.0

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Air Canada
7.0
Good
7,021 reviews
Delta
8.0
Very good
10,410 reviews
Check prices

Crew

8.6

Entertainment

8.0

Boarding

8.2

Comfort

7.9

Food

7.4

Overall

8.0

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

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.

  • Can I find flights from St. Louis to Shannon for under $600 on Cheapflights?

    Yes, there are multiple flights from St. Louis to Shannon for under $600. The cheapest flight booked recently is on KLM for just $577, but on average you can expect to pay $768.

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

    According to our current data, KLM ($577), American Airlines ($629), and United Airlines ($669) offers the cheapest pricing from St. Louis to Shannon.

  • What does STL to SNN mean?

    STL and SNN are unique codes to identify airports used in the aviation industry. They are defined by IATA (International Air Transport Association) and are commonly called IATA codes. STL to SNN refers to a flight route from Lambert-St Louis Airport to Shannon Airport.

  • Can I find deals for flights from St. Louis to Shannon that include extra baggage allowance?

    The amount of baggage you can bring on your St. Louis to Shannon flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from St. Louis to Shannon with specific airlines?

    Yes, Cheapflights allows you to browse and filter St. Louis to Shannon flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • 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.

  • Can I find deals for flights from St. Louis to Shannon that allow pets onboard?

    Many airlines flying from St. Louis to Shannon offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from St. Louis to Shannon?

    Yes, you can often find last-minute deals on St. Louis to Shannon flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the St. Louis to Shannon flight deals updated?

    The St. Louis to Shannon flight deals you see on this page were last updated on 6/2.

  • What are the most popular airlines that fly from St. Louis to Shannon?

    The most popular airlines flying from St. Louis to Shannon are American Airlines, Lufthansa and United Airlines. Something to consider prior to booking your flight.

  • 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 $1,023). 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

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.

Kansas City to Dublin flights
St. Louis to Dublin flights
Kansas City to Shannon flights
Springfield to Dublin flights
St. Louis to Cork flights
Springfield to Shannon flights
Cape Girardeau to Dublin flights
Kansas City to Cork flights
Columbia to Dublin flights
Columbia to Shannon flights
Kansas City to Milltown (Kerry) flights
St. Louis to Milltown (Kerry) flights

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 2,810,401 searches. Data last updated June 2, 2024.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$542Average$1,102FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
American AirlinesCheapest$577Average$870FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
LufthansaCheapest$942Average$1,110FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
San Francisco to Orlando flights
Denver to Orlando flights
San Francisco to Austin flights
New York John F Kennedy Intl Airport to Orlando flights
Detroit to Orlando flights
New York to Punta Cana flights
Boston to Los Angeles flights
San Diego to Chicago flights
Nashville to Miami flights
Newark Airport to Fort Lauderdale flights
Atlanta to Nashville flights
St. Louis to South Padre Island flights

Search flights from St. Louis to Shannon by cabin class

Find flights from St. Louis to Shannon, based on your preferred cabin class, be it economy, premium economy, business, or first class.
First Class
Business Class
Prem Econ Class
Economy Class

Book a flight to one of these trending destinations

User searches for flights to these destinations increased 20% or more in the past 90 days compared to other destinations
Flights to Laayoune Hassan I
Flights to Virac
Flights to Figari-Sud Corse
Flights to Edremit/Korfez
Flights to Rhinelander Oneida County
Flights to Girona Costa Brava
Flights to Brainerd Crow Wing County
Flights to Parikia Paros
Flights to Cortez Montezuma County
Flights to Miyakojima Hirara
Flights to Zadar
Flights to Trapani Birgi
Flights to Provincetown
Flights to Oran Es Senia
Flights to Constanţa Mihail Kogalniceanu
Flights to Vava'u Lupepau'U
Flights to Urumqi
Flights to Hakodate
Flights to Naxos
Flights to Dalaman
Flights to Hyannis Barnstable
Flights to Devils Lake
Flights to Bastia Poretta
Flights to Karpathos

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from St. Louis to Shannon?

When you search for this flight from St. Louis to Shannon, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from St. Louis to Shannon?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from St. Louis to Shannon.

Can Cheapflights find flights from St. Louis to Shannon with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from St. Louis to Shannon flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from St. Louis to Shannon become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Shannon from St. Louis today and book when prices fit your budget.

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.
View all available airlines