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Cheap flights from St. Louis (STL) to Shannon (SNN) from $822

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 8/20. 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
May 12 — May 191
From?
To?
Sun 5/12
Sun 5/19
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 7, 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 68% 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 13% versus a flight in the morning.

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 2,749,864 searches. Data last updated May 7, 2024.
Find some of the cheapest United Airlines flights traveling from St. Louis to Shannon. Come back soon if you're not finding the exact deal you're looking for.
Tue 8/205:32 pmSTL - SNN
1 stop10h 58mUnited Airlines
Tue 8/279:30 amSNN - STL
1 stop18h 22mUnited Airlines
Deal found 5/6$822
Fri 8/235:32 pmSTL - SNN
1 stop10h 58mUnited Airlines
Tue 9/39:30 amSNN - STL
1 stop11h 23mUnited Airlines
Deal found 5/7$872
Fri 8/236:34 amSTL - SNN
1 stop18h 56mUnited Airlines
Mon 9/29:30 amSNN - STL
1 stop18h 22mUnited Airlines
Deal found 5/7$922
Sat 6/84:45 pmSTL - SNN
2 stops32h 45mUnited Airlines
Wed 6/269:30 amSNN - STL
1 stop12h 11mUnited Airlines
Deal found 5/6$992
Sat 6/83:10 pmSTL - SNN
1 stop10h 20mUnited Airlines
Wed 6/269:30 amSNN - STL
1 stop10h 44mUnited Airlines
Deal found 5/6$1,037
Wed 7/39:08 amSTL - SNN
2 stops16h 22mUnited Airlines
Mon 7/159:30 amSNN - STL
2 stops18h 41mUnited Airlines
Deal found 5/7$1,042
Fri 8/301:39 pmSTL - SNN
2 stops14h 51mUnited Airlines
Tue 9/1012:30 pmSNN - STL
2 stops15h 43mUnited Airlines
Deal found 5/7$1,047
Fri 7/51:10 pmSTL - SNN
1 stop12h 20mUnited Airlines
Sun 7/149:30 amSNN - STL
1 stop13h 42mUnited Airlines
Deal found 5/6$1,087
Fri 7/511:25 amSTL - SNN
2 stops17h 05mUnited Airlines
Sun 7/149:30 amSNN - STL
2 stops18h 41mUnited Airlines
Deal found 5/6$1,092

Cheap KLM flights from St. Louis to Shannon

Explore cheap flight options specifically provided by KLM 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 2,749,864 searches. Data last updated May 7, 2024.
To aid your search, here are some of the cheapest KLM flights we've found from St. Louis to Shannon. Deals are refreshing constantly so come back soon for more options.
Tue 8/202:05 pmSTL - SNN
2 stops14h 45mKLM
Tue 8/2712:50 pmSNN - STL
2 stops26h 02mKLM
Deal found 5/6$827
Fri 8/232:05 pmSTL - SNN
2 stops14h 45mKLM
Tue 9/312:50 pmSNN - STL
2 stops26h 02mKLM
Deal found 5/7$877
Fri 8/2311:51 amSTL - SNN
2 stops16h 59mKLM
Mon 9/212:50 pmSNN - STL
2 stops16h 49mKLM
Deal found 5/7$927

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 2,749,864 searches. Prices were last updated on May 7, 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.
Sat 6/84:45 pmSTL - SNN
2 stops32h 45mUnited Airlines
Wed 6/269:30 amSNN - STL
1 stop12h 11mUnited Airlines
Deal found 5/6$992
Sat 6/83:10 pmSTL - SNN
1 stop10h 20mUnited Airlines
Wed 6/269:30 amSNN - STL
1 stop10h 44mUnited Airlines
Deal found 5/6$1,037
Mon 5/204:20 pmSTL - SNN
2 stops17h 50mAmerican Airlines
Thu 5/309:25 pmSNN - STL
2 stops24h 03mAmerican Airlines
Deal found 5/6$1,039
Mon 5/205:35 pmSTL - SNN
1 stop10h 55mUnited Airlines
Thu 5/309:30 amSNN - STL
1 stop10h 44mUnited Airlines
Deal found 5/6$1,042
Mon 5/2010:10 amSTL - SNN
2 stops18h 20mUnited Airlines
Thu 5/309:30 amSNN - STL
1 stop12h 11mUnited Airlines
Deal found 5/6$1,047
Sun 5/122:00 pmSTL - SNN
2 stops20h 10mAmerican Airlines
Tue 5/219:25 pmSNN - STL
2 stops24h 03mAmerican Airlines
Deal found 5/6$1,210
Mon 5/2011:00 amSTL - SNN
2 stops18h 20mMultiple Airlines
Thu 5/307:40 amSNN - STL
3 stops20h 07mMultiple Airlines
Deal found 5/6$1,398
Sun 5/1212:20 pmSTL - SNN
1 stop16h 10mLufthansa
Tue 5/2112:30 pmSNN - STL
1 stop15h 24mLufthansa
Deal found 5/6$1,402
Sun 5/129:50 amSTL - SNN
2 stops24h 20mAir Canada
Tue 5/217:40 amSNN - STL
3 stops20h 09mAir Canada
Deal found 5/6$1,449

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 2,749,864 searches. Data last updated May 7, 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.
Tue 8/205:32 pmSTL - SNN
1 stop10h 58mUnited Airlines
Tue 8/279:30 amSNN - STL
1 stop18h 22mUnited Airlines
Deal found 5/6$822
Tue 8/202:05 pmSTL - SNN
2 stops14h 45mKLM
Tue 8/2712:50 pmSNN - STL
2 stops26h 02mKLM
Deal found 5/6$827
Fri 8/235:32 pmSTL - SNN
1 stop10h 58mUnited Airlines
Tue 9/39:30 amSNN - STL
1 stop11h 23mUnited Airlines
Deal found 5/7$872
Fri 8/232:05 pmSTL - SNN
2 stops14h 45mKLM
Tue 9/312:50 pmSNN - STL
2 stops26h 02mKLM
Deal found 5/7$877
Thu 9/122:38 pmSTL - SNN
2 stops19h 32mAmerican Airlines
Mon 9/239:25 pmSNN - STL
2 stops25h 52mAmerican Airlines
Deal found 5/6$919
Fri 8/236:34 amSTL - SNN
1 stop18h 56mUnited Airlines
Mon 9/29:30 amSNN - STL
1 stop18h 22mUnited Airlines
Deal found 5/7$922
Fri 8/2311:51 amSTL - SNN
2 stops16h 59mKLM
Mon 9/212:50 pmSNN - STL
2 stops16h 49mKLM
Deal found 5/7$927
Sat 6/84:45 pmSTL - SNN
2 stops32h 45mUnited Airlines
Wed 6/269:30 amSNN - STL
1 stop12h 11mUnited Airlines
Deal found 5/6$992
Sat 6/83:10 pmSTL - SNN
1 stop10h 20mUnited Airlines
Wed 6/269:30 amSNN - STL
1 stop10h 44mUnited Airlines
Deal found 5/6$1,037

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 2,749,864 searches. Data last updated May 7, 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.
Sun 5/122:00 pmSTL - SNN
2 stops20h 10mAmerican Airlines
Tue 5/219:25 pmSNN - STL
2 stops24h 03mAmerican Airlines
Deal found 5/6$1,210
Sun 5/1212:20 pmSTL - SNN
1 stop16h 10mLufthansa
Tue 5/2112:30 pmSNN - STL
1 stop15h 24mLufthansa
Deal found 5/6$1,402
Sun 5/129:50 amSTL - SNN
2 stops24h 20mAir Canada
Tue 5/217:40 amSNN - STL
3 stops20h 09mAir Canada
Deal found 5/6$1,449
Sun 5/124:05 pmSTL - SNN
2 stops18h 05mMultiple Airlines
Tue 5/2112:30 pmSNN - STL
1 stop15h 24mMultiple Airlines
Deal found 5/6$1,596

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 2,749,864 searches. Data last updated May 7, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$822 - $1,663

Route

Depart

Return

Price

Lambert-St LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Tue 8/20

1 stop10h 58m

Shannon

Tue 8/27

1 stop18h 22m

$822

Lambert-St LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Tue 8/20

2 stops14h 45m

Shannon

Tue 8/27

2 stops26h 02m

$827

Lambert-St LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Fri 8/23

1 stop10h 58m

Shannon

Tue 9/3

1 stop11h 23m

$872

Lambert-St LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Fri 8/23

2 stops14h 45m

Shannon

Tue 9/3

2 stops26h 02m

$877

Lambert-St LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Thu 9/12

2 stops19h 32m

Shannon

Mon 9/23

2 stops25h 52m

$919

Lambert-St LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Fri 8/23

1 stop18h 56m

Shannon

Mon 9/2

1 stop18h 22m

$922

Lambert-St LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Tue 8/20

2 stops26h 35m

Shannon

Tue 8/27

3 stops20h 12m

$1,153

Lambert-St LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Mon 5/20

2 stops18h 20m

Shannon

Thu 5/30

3 stops20h 07m

$1,398

Lambert-St LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Sun 5/19

2 stops14h 20m

Shannon

Sat 5/25

2 stops28h 47m

$1,663

Flights are sorted by cheapest first

Deals found on 5/6

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 April 28, 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

Average price of flights to Shannon by month

Plan your trip from St. Louis to Shannon by taking into account the cheapest months to travel. The average price of a one-way flight from St. Louis to Shannon is currently $0 while a round-trip flight costs $1,050. Price data was last updated on April 28, 2024.

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 $1,060). 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.

January

$620

February

$533

March

$614

April

$695

May

$838

June

$1,060

July

$1,042

August

$907

September

$815

October

$662

November

$584

December

$649

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 7, 2024.
Get a feel of what it's like to fly with United Airlines, KLM and American 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
1,598 reviews
Check prices

Overall

7.9

Boarding

7.8

Entertainment

7.2

Comfort

7.6

Food

7.3

Crew

8.4

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
1,598 reviews
KLM
7.9
Good
1,598 reviews
Check prices

Overall

7.9

Boarding

7.8

Entertainment

7.2

Comfort

7.6

Food

7.3

Crew

8.4

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
11,073 reviews
KLM
7.9
Good
1,598 reviews
Check prices

Overall

7.9

Boarding

7.8

Entertainment

7.2

Comfort

7.6

Food

7.3

Crew

8.4

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
14,686 reviews
KLM
7.9
Good
1,598 reviews
Check prices

Overall

7.9

Boarding

7.8

Entertainment

7.2

Comfort

7.6

Food

7.3

Crew

8.4

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
6,915 reviews
KLM
7.9
Good
1,598 reviews
Check prices

Overall

7.9

Boarding

7.8

Entertainment

7.2

Comfort

7.6

Food

7.3

Crew

8.4

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.

British Airways
6.8
Okay
6,870 reviews
KLM
7.9
Good
1,598 reviews
Check prices

Overall

7.9

Boarding

7.8

Entertainment

7.2

Comfort

7.6

Food

7.3

Crew

8.4

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 $900 on Cheapflights?

    Yes, there are multiple flights from St. Louis to Shannon for under $900. The cheapest flight booked recently is on United Airlines for just $822, but on average you can expect to pay $1,069.

  • Are there last-minute flights available from St. Louis to Shannon for under $1,300?

    There are currently 4+ open flights from St. Louis to Shannon within the next 7 days for less than $1,300.

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

    According to our current data, United Airlines ($822), KLM ($827), and American Airlines ($919) offers the cheapest pricing from St. Louis to Shannon.

  • 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 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 5/7.

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 2,749,864 searches. Data last updated May 7, 2024.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$542Average$1,123FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
American AirlinesCheapest$576Average$877FlexibilityNo 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.
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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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