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Cheap flights from St. Louis (STL) to Shannon (SNN) from $719

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 9/4. 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 3 — Jun 101
From?
To?
Mon 6/3
Mon 6/10
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 May 29, 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.

When is the cheapest time to fly from St. Louis to Shannon (STL - 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 2,696,634 searches. Data last updated May 29, 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.
Wed 9/46:10 pmSTL - SNN
2 stops16h 00mAmerican Airlines
Wed 9/117:40 amSNN - STL
2 stops17h 50mAmerican Airlines
Deal found 5/28$719
Fri 10/252:38 pmSTL - SNN
2 stops14h 42mAmerican Airlines
Sat 11/27:45 amSNN - STL
2 stops20h 37mAmerican Airlines
Deal found 5/28$760
Thu 9/1212:52 pmSTL - SNN
2 stops16h 28mAmerican Airlines
Mon 9/239:25 pmSNN - STL
2 stops24h 12mAmerican Airlines
Deal found 5/28$770
Fri 10/2510:45 amSTL - SNN
1 stop12h 50mAmerican Airlines
Sat 11/22:00 pmSNN - STL
2 stops24h 09mAmerican Airlines
Deal found 5/28$886
Fri 9/136:14 pmSTL - SNN
2 stops15h 31mAmerican Airlines
Mon 9/239:25 pmSNN - STL
2 stops24h 12mAmerican Airlines
Deal found 5/28$928
Mon 6/245:38 pmSTL - SNN
2 stops16h 32mAmerican Airlines
Mon 7/19:25 pmSNN - STL
2 stops23h 01mAmerican Airlines
Deal found 5/27$1,161

Cheap Air Canada flights from St. Louis to Shannon

Explore cheap flight options specifically provided by Air Canada 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 2,696,634 searches. Data last updated May 29, 2024.
To aid your search, here are some of the cheapest Air Canada flights we've found from St. Louis to Shannon. Deals are refreshing constantly so come back soon for more options.
Fri 10/2512:00 pmSTL - SNN
2 stops21h 45mAir Canada
Sat 11/27:45 amSNN - STL
3 stops18h 36mAir Canada
Deal found 5/28$854
Fri 8/2312:00 pmSTL - SNN
2 stops17h 20mAir Canada
Tue 9/37:40 amSNN - STL
3 stops20h 12mAir Canada
Deal found 5/28$1,429
Fri 8/2312:00 pmSTL - SNN
2 stops21h 45mAir Canada
Mon 9/27:40 amSNN - STL
3 stops20h 12mAir Canada
Deal found 5/28$1,444
Wed 9/44:05 pmSTL - SNN
2 stops22h 30mAir Canada
Wed 9/117:40 amSNN - STL
3 stops20h 12mAir Canada
Deal found 5/28$1,646
Thu 9/1212:00 pmSTL - SNN
2 stops17h 20mAir Canada
Mon 9/237:40 amSNN - STL
3 stops20h 12mAir Canada
Deal found 5/28$1,679
Mon 6/2411:00 amSTL - SNN
2 stops23h 10mAir Canada
Mon 7/17:40 amSNN - STL
3 stops19h 57mAir Canada
Deal found 5/27$1,787

Cheap St. Louis to Shannon flights in May & June 2024

Find cheap flight options from St. Louis to Shannon specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,696,634 searches. Prices were last updated on May 29, 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.
Mon 6/245:38 pmSTL - SNN
2 stops16h 32mAmerican Airlines
Mon 7/19:25 pmSNN - STL
2 stops23h 01mAmerican Airlines
Deal found 5/27$1,161
Mon 6/2411:38 amSTL - SNN
1 stop13h 52mMultiple Airlines
Mon 7/14:55 pmSNN - STL
2 stops28h 26mMultiple Airlines
Deal found 5/27$1,226
Mon 6/36:30 amSTL - SNN
1 stop19h 00mUnited Airlines
Mon 6/109:30 amSNN - STL
1 stop12h 11mUnited Airlines
Deal found 5/28$1,663
Mon 6/311:38 amSTL - SNN
1 stop13h 52mUnited Airlines
Mon 6/109:30 amSNN - STL
2 stops17h 19mUnited Airlines
Deal found 5/28$1,667
Mon 6/2410:50 amSTL - SNN
1 stop17h 40mLufthansa
Mon 7/112:30 pmSNN - STL
1 stop16h 07mLufthansa
Deal found 5/27$1,775
Mon 6/2411:00 amSTL - SNN
2 stops23h 10mAir Canada
Mon 7/17:40 amSNN - STL
3 stops19h 57mAir Canada
Deal found 5/27$1,787
Mon 6/2411:00 amSTL - SNN
3 stops18h 20mMultiple Airlines
Mon 7/12:50 pmSNN - STL
3 stops29h 33mMultiple Airlines
Deal found 5/27$2,009
Mon 6/2410:15 amSTL - SNN
1 stop15h 15mUnited Airlines
Mon 7/19:30 amSNN - STL
1 stop10h 48mUnited Airlines
Deal found 5/27$2,030
Mon 6/243:27 pmSTL - SNN
2 stops23h 08mAmerican Airlines
Mon 7/19:25 pmSNN - STL
2 stops25h 53mAmerican Airlines
Deal found 5/27$2,152

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 2,696,634 searches. Data last updated May 29, 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 10/252:38 pmSTL - SNN
2 stops14h 42mAmerican Airlines
Sat 11/27:45 amSNN - STL
2 stops20h 37mAmerican Airlines
Deal found 5/27$760
Wed 9/412:55 pmSTL - SNN
1 stop12h 35mUnited Airlines
Wed 9/119:30 amSNN - STL
1 stop16h 17mUnited Airlines
Deal found 5/27$822
Wed 9/48:05 amSTL - SNN
1 stop17h 25mUnited Airlines
Wed 9/119:30 amSNN - STL
1 stop18h 22mUnited Airlines
Deal found 5/28$823
Wed 9/412:55 pmSTL - SNN
2 stops15h 35mUnited Airlines
Wed 9/1112:30 pmSNN - STL
2 stops27h 21mUnited Airlines
Deal found 5/28$827
Fri 10/2512:00 pmSTL - SNN
2 stops21h 45mMultiple Airlines
Sat 11/27:45 amSNN - STL
3 stops18h 36mMultiple Airlines
Deal found 5/27$854
Fri 8/236:34 amSTL - SNN
1 stop18h 56mUnited Airlines
Tue 9/39:30 amSNN - STL
1 stop18h 22mUnited Airlines
Deal found 5/27$872
Fri 8/238:05 amSTL - SNN
1 stop17h 25mUnited Airlines
Tue 9/39:30 amSNN - STL
1 stop12h 19mUnited Airlines
Deal found 5/28$873
Fri 8/2310:08 amSTL - SNN
2 stops18h 42mKLM
Tue 9/312:50 pmSNN - STL
2 stops16h 49mKLM
Deal found 5/28$877
Fri 10/2511:17 amSTL - SNN
1 stop17h 13mMultiple Airlines
Sat 11/27:45 amSNN - STL
2 stops32h 08mMultiple Airlines
Deal found 5/27$880

St. Louis to Shannon flights leaving soon

Find last-minute flight options from St. Louis to Shannon for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 2,696,634 searches. Data last updated May 29, 2024.
Check out these flights departing soon from St. Louis to Shannon. To prevent any unwanted surprises, users should verify their flight info before booking.
Mon 6/36:30 amSTL - SNN
1 stop19h 00mUnited Airlines
Mon 6/109:30 amSNN - STL
1 stop12h 11mUnited Airlines
Deal found 5/28$1,663
Mon 6/311:38 amSTL - SNN
1 stop13h 52mUnited Airlines
Mon 6/109:30 amSNN - STL
2 stops17h 19mUnited Airlines
Deal found 5/28$1,667

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 2,696,634 searches. Data last updated May 29, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$719 - $1,775

Route

Depart

Return

Price

Lambert-St LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Wed 9/4

2 stops16h 00m

Shannon

Wed 9/11

2 stops17h 50m

$719

Lambert-St LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Fri 10/25

2 stops14h 42m

Shannon

Sat 11/2

2 stops20h 37m

$760

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

Wed 9/4

2 stops15h 35m

Shannon

Wed 9/11

2 stops27h 21m

$827

Lambert-St LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Wed 9/4

1 stop10h 58m

Shannon

Wed 9/11

1 stop11h 23m

$853

Lambert-St LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Fri 10/25

2 stops21h 45m

Shannon

Sat 11/2

3 stops18h 36m

$854

Lambert-St LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Fri 8/23

2 stops18h 42m

Shannon

Tue 9/3

2 stops16h 49m

$877

Lambert-St LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Mon 6/24

1 stop13h 52m

Shannon

Mon 7/1

2 stops28h 26m

$1,226

Lambert-St LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Mon 6/24

1 stop17h 40m

Shannon

Mon 7/1

1 stop16h 07m

$1,775

Flights are sorted by cheapest first

Deals found on 5/28

When is the cheapest time 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 May 29, 2024.
Get a feel of what it's like to fly with American Airlines, Air Canada and United Airlines 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.
KLM
7.9
Good
1,521 reviews
Check prices

Overall

7.9

Food

7.4

Entertainment

7.2

Crew

8.4

Boarding

7.9

Comfort

7.7

Reviews

1 / 10

Departure was late. Plane much too small for an 11 hour flight. One bathroom was out of order in a completely full flight.

KLM
7.9
Good
1,521 reviews
KLM
7.9
Good
1,521 reviews
Check prices

Overall

7.9

Food

7.4

Entertainment

7.2

Crew

8.4

Boarding

7.9

Comfort

7.7

Reviews

1 / 10

Departure was late. Plane much too small for an 11 hour flight. One bathroom was out of order in a completely full flight.

United Airlines
7.4
Good
10,799 reviews
KLM
7.9
Good
1,521 reviews
Check prices

Overall

7.9

Food

7.4

Entertainment

7.2

Crew

8.4

Boarding

7.9

Comfort

7.7

Reviews

1 / 10

Departure was late. Plane much too small for an 11 hour flight. One bathroom was out of order in a completely full flight.

American Airlines
7.3
Good
14,316 reviews
KLM
7.9
Good
1,521 reviews
Check prices

Overall

7.9

Food

7.4

Entertainment

7.2

Crew

8.4

Boarding

7.9

Comfort

7.7

Reviews

1 / 10

Departure was late. Plane much too small for an 11 hour flight. One bathroom was out of order in a completely full flight.

Air Canada
7.0
Good
6,994 reviews
KLM
7.9
Good
1,521 reviews
Check prices

Overall

7.9

Food

7.4

Entertainment

7.2

Crew

8.4

Boarding

7.9

Comfort

7.7

Reviews

1 / 10

Departure was late. Plane much too small for an 11 hour flight. One bathroom was out of order in a completely full flight.

Lufthansa
7.0
Good
7,594 reviews
KLM
7.9
Good
1,521 reviews
Check prices

Overall

7.9

Food

7.4

Entertainment

7.2

Crew

8.4

Boarding

7.9

Comfort

7.7

Reviews

1 / 10

Departure was late. Plane much too small for an 11 hour flight. One bathroom was out of order in a completely full flight.

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 $800 on Cheapflights?

    Yes, there are multiple flights from St. Louis to Shannon for under $800. The cheapest flight booked recently is on American Airlines for just $719, but on average you can expect to pay $895.

  • Are there last-minute flights available from St. Louis to Shannon for under $1,700?

    There are currently 2+ open flights from St. Louis to Shannon within the next 7 days for less than $1,700.

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

    According to our current data, American Airlines ($719), United Airlines ($827), and Air Canada ($854) 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 5/28.

  • 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.

  • When is the best time 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

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Alternative routes for St. Louis to Shannon
See prices for flight routes from nearby airports that may be better suited for you.

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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 2,696,634 searches. Data last updated May 29, 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
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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

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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.

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