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Cheap flights from St. Louis (STL) to Shannon (SNN) from $501

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 6/14. 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
Apr 28 — May 51
From?
To?
Sun 4/28
Sun 5/5
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 April 23, 2024.

Popular in

June

Cheapest in

February

Average price

$910

Round-trip from

$533
High demand for flights, 23% potential price rise
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Best time to find cheap flights, 36% potential price drop
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Average for round-trip flights in April 2024
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From Lambert-St Louis to Shannon
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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.

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

The best pricing can be found in the month of February. Prices to Shannon from St. Louis average $1,056. You can even find prices in February for less than $1,056, as users have found deals to Shannon from as low as $635. The month of June appears to be one of the more expensive times to travel to Shannon from St. Louis. Flying in the targeted month can save you up to 29%.

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 in the afternoon, which can drop the price by up to 4% 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 3,086,534 searches. Data last updated April 23, 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.
Sun 5/1211:17 amSTL - SNN
2 stops18h 03mAmerican Airlines
Tue 5/219:25 pmSNN - STL
2 stops24h 03mAmerican Airlines
Deal found 4/21$820
Thu 9/122:38 pmSTL - SNN
2 stops19h 32mAmerican Airlines
Mon 9/239:25 pmSNN - STL
2 stops25h 52mAmerican Airlines
Deal found 4/21$869

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 3,086,534 searches. Data last updated April 23, 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 stop18h 22mUnited Airlines
Deal found 4/21$822
Wed 9/45:32 pmSTL - SNN
1 stop10h 58mUnited Airlines
Wed 9/1112:30 pmSNN - STL
2 stops27h 21mUnited Airlines
Deal found 4/21$827
Tue 5/146:19 amSTL - SNN
2 stops22h 11mUnited Airlines
Tue 5/2112:30 pmSNN - STL
2 stops30h 11mUnited Airlines
Deal found 4/21$842
Thu 9/126:34 amSTL - SNN
1 stop18h 56mUnited Airlines
Mon 9/239:30 amSNN - STL
1 stop12h 19mUnited Airlines
Deal found 4/22$922
Thu 9/126:34 amSTL - SNN
1 stop18h 56mUnited Airlines
Mon 9/239:30 amSNN - STL
2 stops17h 58mUnited Airlines
Deal found 4/22$927
Fri 9/135:20 pmSTL - SNN
1 stop32h 10mUnited Airlines
Mon 9/2312:30 pmSNN - STL
2 stops27h 37mUnited Airlines
Deal found 4/22$939
Fri 9/1311:10 amSTL - SNN
1 stop14h 20mUnited Airlines
Mon 9/239:30 amSNN - STL
1 stop30h 37mUnited Airlines
Deal found 4/22$1,055
Fri 7/511:25 amSTL - SNN
1 stop14h 05mUnited Airlines
Sun 7/149:30 amSNN - STL
1 stop13h 42mUnited Airlines
Deal found 4/22$1,087
Fri 7/56:08 amSTL - SNN
2 stops19h 22mUnited Airlines
Sun 7/149:30 amSNN - STL
2 stops18h 44mUnited Airlines
Deal found 4/22$1,092

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

Find cheap flight options from St. Louis to Shannon specifically for the months of April and May 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 3,086,534 searches. Prices were last updated on April 23, 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.
Sun 5/125:08 pmSTL - SNN
2 stops21h 27mAmerican Airlines
Tue 5/219:25 pmSNN - STL
2 stops24h 03mAmerican Airlines
Deal found 4/22$820
Sun 5/1211:00 amSTL - SNN
2 stops18h 20mMultiple Airlines
Tue 5/2112:30 pmSNN - STL
1 stop15h 24mMultiple Airlines
Deal found 4/22$1,093
Sun 5/124:05 pmSTL - SNN
2 stops22h 30mMultiple Airlines
Tue 5/217:40 amSNN - STL
3 stops20h 09mMultiple Airlines
Deal found 4/22$1,254
Sun 5/1212:20 pmSTL - SNN
1 stop16h 10mLufthansa
Tue 5/2112:30 pmSNN - STL
1 stop15h 24mLufthansa
Deal found 4/22$1,784

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 3,086,534 searches. Data last updated April 23, 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.
Wed 10/302:43 pmSTL - SNN
2 stops21h 02mAmerican Airlines
Wed 11/67:45 amSNN - STL
2 stops21h 37mAmerican Airlines
Deal found 4/23$660
Wed 10/302:43 pmSTL - SNN
2 stops15h 47mAmerican Airlines
Wed 11/67:45 amSNN - STL
2 stops21h 37mAmerican Airlines
Deal found 4/22$661
Wed 10/304:10 pmSTL - SNN
2 stops14h 20mMultiple Airlines
Wed 11/67:45 amSNN - STL
3 stops32h 08mMultiple Airlines
Deal found 4/23$690
Wed 10/304:10 pmSTL - SNN
2 stops19h 35mAir Canada
Wed 11/67:45 amSNN - STL
3 stops32h 08mAir Canada
Deal found 4/22$740
Fri 11/2912:06 pmSTL - SNN
2 stops17h 24mAmerican Airlines
Tue 12/37:45 amSNN - STL
2 stops19h 46mAmerican Airlines
Deal found 4/21$743
Sun 5/125:08 pmSTL - SNN
2 stops21h 27mAmerican Airlines
Tue 5/219:25 pmSNN - STL
2 stops24h 03mAmerican Airlines
Deal found 4/22$820
Wed 9/45:32 pmSTL - SNN
1 stop10h 58mUnited Airlines
Wed 9/119:30 amSNN - STL
1 stop18h 22mUnited Airlines
Deal found 4/22$822
Tue 8/2011:51 amSTL - SNN
2 stops16h 59mKLM
Tue 8/2712:50 pmSNN - STL
2 stops26h 02mKLM
Deal found 4/22$827
Fri 9/132:38 pmSTL - SNN
2 stops19h 07mAmerican Airlines
Mon 9/239:25 pmSNN - STL
2 stops25h 52mAmerican Airlines
Deal found 4/22$869

One-way flights to Shannon from St. Louis

Search for one-way flight options from St. Louis to Shannon. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 3,086,534 searches. Data last updated April 23, 2024.
Take a look at some of the best available options we've come across on one-way flights from St. Louis to Shannon. For those needing a return trip from St. Louis, there is a search form available above.
Fri 6/147:44 pmSTL - SNN
2 stops42h 51mMultiple Airlines
Deal found 4/21$501
Sat 7/1311:34 amSTL - SNN
2 stops27h 01mMultiple Airlines
Deal found 4/21$550
Fri 6/143:07 pmSTL - SNN
3 stops47h 28mMultiple Airlines
Deal found 4/21$655
Sat 7/1310:19 amSTL - SNN
1 stop15h 11mUnited Airlines
Deal found 4/21$657
Sat 7/1311:41 pmSTL - SNN
3 stops34h 29mMultiple Airlines
Deal found 4/21$808
Fri 6/145:31 pmSTL - SNN
1 stop31h 59mUnited Airlines
Deal found 4/21$972
Fri 6/146:00 amSTL - SNN
2 stops22h 50mDelta
Deal found 4/21$1,807
Fri 6/142:56 pmSTL - SNN
3 stops38h 24mMultiple Airlines
Deal found 4/21$5,903

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 3,086,534 searches. Data last updated April 23, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$820 - $1,338

Route

Depart

Return

Price

Lambert-St LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Sun 5/12

2 stops18h 03m

Shannon

Tue 5/21

2 stops24h 03m

$820

Lambert-St LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Wed 9/4

1 stop10h 58m

Shannon

Wed 9/11

1 stop18h 22m

$822

Lambert-St LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Wed 9/4

1 stop10h 58m

Shannon

Wed 9/11

2 stops27h 21m

$827

Lambert-St LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Tue 5/14

2 stops22h 11m

Shannon

Tue 5/21

2 stops30h 11m

$842

Lambert-St LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Thu 9/12

2 stops19h 32m

Shannon

Mon 9/23

2 stops25h 52m

$869

Lambert-St LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Sun 5/12

2 stops19h 30m

Shannon

Tue 5/21

1 stop15h 24m

$1,047

Lambert-St LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Tue 8/20

1 stop16h 15m

Shannon

Tue 8/27

1 stop16h 26m

$1,066

Lambert-St LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Mon 7/15

2 stops21h 35m

Shannon

Sat 7/27

2 stops14h 27m

$1,172

Lambert-St LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Tue 8/20

2 stops22h 10m

Shannon

Tue 8/27

3 stops20h 12m

$1,338

Flights are sorted by cheapest first

Deals found on 4/21

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 14, 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 $1,482 while a round-trip flight costs $978. Price data was last updated on April 21, 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 $1,077). 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

$706

May

$842

June

$1,077

July

$1,042

August

$922

September

$815

October

$662

November

$594

December

$650

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 April 23, 2024.
Get a feel of what it's like to fly with American Airlines, United Airlines and Lufthansa 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
8.1
Very good
11,028 reviews
Check prices

Comfort

7.9

Overall

8.1

Entertainment

8.0

Food

7.5

Boarding

8.2

Crew

8.6

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

Delta
8.1
Very good
11,028 reviews
Delta
8.1
Very good
11,028 reviews
Check prices

Comfort

7.9

Overall

8.1

Entertainment

8.0

Food

7.5

Boarding

8.2

Crew

8.6

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

United Airlines
7.4
Good
11,289 reviews
Delta
8.1
Very good
11,028 reviews
Check prices

Comfort

7.9

Overall

8.1

Entertainment

8.0

Food

7.5

Boarding

8.2

Crew

8.6

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

American Airlines
7.3
Good
14,914 reviews
Delta
8.1
Very good
11,028 reviews
Check prices

Comfort

7.9

Overall

8.1

Entertainment

8.0

Food

7.5

Boarding

8.2

Crew

8.6

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

Air Canada
7.0
Good
6,858 reviews
Delta
8.1
Very good
11,028 reviews
Check prices

Comfort

7.9

Overall

8.1

Entertainment

8.0

Food

7.5

Boarding

8.2

Crew

8.6

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

Lufthansa
7.0
Good
7,768 reviews
Delta
8.1
Very good
11,028 reviews
Check prices

Comfort

7.9

Overall

8.1

Entertainment

8.0

Food

7.5

Boarding

8.2

Crew

8.6

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

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 American Airlines for just $820, but on average you can expect to pay $1,085.

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

    According to our current data, American Airlines ($820), United Airlines ($822), and Lufthansa ($1,066) offers the cheapest pricing from St. Louis to Shannon. American Airlines is priced at 22% lower than the current average price of a flight leaving 3 months from now.

  • 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 4/23.

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 3,086,534 searches. Data last updated April 23, 2024.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$542Average$1,123FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
American AirlinesCheapest$572Average$894FlexibilityNo 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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