$489+ Cheap flights from St. Louis (STL) to Shannon (SNN)
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 8/18. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SNN
Mar 14 — Mar 211
1 adult, Economy
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Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Cheapest flights from St. Louis to ShannonExplore 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 February 12, 2026.
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 February 12, 2026.
This United Airlines deal was found by Cheapflights users on 2/9. 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.
Tue 8/186:40 am
STL
- SNN
1 stop18h 50m
United Airlines
Wed 8/269:30 am
SNN
- STL
1 stop10h 48m
United Airlines
Deal found 2/9![United Airlines logo]()
$489
This United Airlines deal was found by Cheapflights users on 2/9. 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.
Sat 8/155:18 pm
STL
- SNN
1 stop32h 12m
United Airlines
Fri 8/219:30 am
SNN
- STL
1 stop12h 56m
United Airlines
Deal found 2/9![United Airlines logo]()
$490
This Delta deal was found by Cheapflights users on 2/9. 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.
Wed 8/1211:51 am
STL
- SNN
2 stops17h 19m
Delta
Tue 8/251:05 pm
SNN
- STL
2 stops16h 32m
Delta
Deal found 2/9![Delta logo]()
$493
This United Airlines deal was found by Cheapflights users on 2/9. 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.
Thu 8/131:27 pm
STL
- SNN
1 stop12h 03m
United Airlines
Tue 8/259:30 am
SNN
- STL
1 stop10h 48m
United Airlines
Deal found 2/9![United Airlines logo]()
$539
This United Airlines deal was found by Cheapflights users on 2/9. 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.
Sat 8/156:49 pm
STL
- SNN
1 stop30h 41m
United Airlines
Sat 8/229:30 am
SNN
- STL
1 stop10h 48m
United Airlines
Deal found 2/9![United Airlines logo]()
$540
This Delta deal was found by Cheapflights users on 2/9. 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 9/66:00 am
STL
- SNN
2 stops23h 10m
Delta
Sun 9/131:05 pm
SNN
- STL
2 stops25h 01m
Delta
Deal found 2/9![Delta logo]()
$543
This United Airlines deal was found by Cheapflights users on 2/9. 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.
Fri 8/146:49 pm
STL
- SNN
1 stop30h 41m
United Airlines
Wed 8/269:30 am
SNN
- STL
1 stop10h 48m
United Airlines
Deal found 2/9![United Airlines logo]()
$544
This Air France deal was found by Cheapflights users on 2/9. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/75:00 pm
STL
- SNN
1 stop12h 10m
Multiple Airlines
Sun 9/131:05 pm
SNN
- STL
2 stops32h 52m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$545
This United Airlines deal was found by Cheapflights users on 2/10. 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.
Sat 8/156:49 pm
STL
- SNN
1 stop30h 41m
United Airlines
Sun 8/239:30 am
SNN
- STL
2 stops44h 13m
United Airlines
Deal found 2/10![United Airlines logo]()
$549
This Delta deal was found by Cheapflights users on 2/9. 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.
Wed 9/95:00 pm
STL
- SNN
1 stop12h 10m
Delta
Sat 9/121:05 pm
SNN
- STL
1 stop33h 50m
Delta
Deal found 2/9![Delta logo]()
$551
This KAYAK deal was found by Cheapflights users on 2/9. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/123:30 pm
STL
- SNN
1 stop12h 40m
Lufthansa
Sat 8/2212:00 pm
SNN
- STL
1 stop31h 25m
Lufthansa
Deal found 2/9![Lufthansa logo]()
$553
This KAYAK deal was found by Cheapflights users on 2/10. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/93:30 pm
STL
- SNN
1 stop12h 40m
Lufthansa
Tue 9/2212:30 pm
SNN
- STL
1 stop16h 57m
Lufthansa
Deal found 2/10![Lufthansa logo]()
$588
Best flights from St. Louis to ShannonDiscover carefully curated flight deals from St. Louis to Shannon that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 12, 2026.
Discover carefully curated flight deals from St. Louis to Shannon that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 12, 2026.
This Air Canada deal was found by Cheapflights users on 2/10. 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.
Wed 2/254:05 pm
STL
- SNN
2 stops42h 40m
Air Canada
Sun 3/17:50 am
SNN
- STL
2 stops37h 39m
Air Canada
Deal found 2/10![Air Canada logo]()
$688
This American Airlines deal was found by Cheapflights users on 2/8. 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.
Thu 3/269:15 am
STL
- SNN
2 stops16h 05m
American Airlines
Thu 4/21:45 pm
SNN
- STL
2 stops15h 59m
American Airlines
Deal found 2/8![American Airlines logo]()
$718
This oojo deal was found by Cheapflights users on 2/9. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/256:57 pm
STL
- SNN
2 stops19h 28m
British Airways
Sat 4/45:25 pm
SNN
- STL
2 stops30h 42m
British Airways
Deal found 2/9![British Airways logo]()
$736
This Gotogate deal was found by Cheapflights users on 2/9. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/121:00 pm
STL
- SNN
2 stops16h 20m
Multiple Airlines
Sun 5/249:15 pm
SNN
- STL
2 stops28h 50m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$766
This American Airlines deal was found by Cheapflights users on 2/10. 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.
Wed 3/252:29 pm
STL
- SNN
2 stops16h 01m
American Airlines
Sat 4/41:45 pm
SNN
- STL
1 stop26h 24m
American Airlines
Deal found 2/10![American Airlines logo]()
$763
This Air Canada deal was found by Cheapflights users on 2/11. 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.
Wed 3/2511:25 am
STL
- SNN
3 stops19h 05m
Air Canada
Sat 4/45:25 pm
SNN
- STL
2 stops27h 59m
Air Canada
Deal found 2/11![Air Canada logo]()
$768
This BusinessClass deal was found by Cheapflights users on 2/11. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/256:57 pm
STL
- SNN
2 stops19h 28m
Multiple Airlines
Sat 4/41:45 pm
SNN
- STL
1 stop26h 24m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$771
Last-minute flights from St. Louis to ShannonDiscover last-minute flight deals from St. Louis to Shannon. Data last updated February 12, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Shannon. Data last updated February 12, 2026 and is based on user searches.
This Air Canada deal was found by Cheapflights users on 2/10. 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.
Wed 2/254:05 pm
STL
- SNN
2 stops42h 40m
Air Canada
Sun 3/17:50 am
SNN
- STL
2 stops37h 39m
Air Canada
Deal found 2/10![Air Canada logo]()
$688
This British Airways deal was found by Cheapflights users on 2/8. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/255:52 pm
STL
- SNN
2 stops16h 53m
British Airways
Sun 3/17:50 am
SNN
- STL
2 stops17h 40m
British Airways
Deal found 2/8![British Airways logo]()
$787
This oojo deal was found by Cheapflights users on 2/9. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/256:57 pm
STL
- SNN
2 stops19h 28m
British Airways
Sat 4/45:25 pm
SNN
- STL
2 stops30h 42m
British Airways
Deal found 2/9![British Airways logo]()
$736
This American Airlines deal was found by Cheapflights users on 2/10. 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.
Wed 3/252:29 pm
STL
- SNN
2 stops16h 01m
American Airlines
Sat 4/41:45 pm
SNN
- STL
1 stop26h 24m
American Airlines
Deal found 2/10![American Airlines logo]()
$763
This Air Canada deal was found by Cheapflights users on 2/9. 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.
Wed 3/2511:25 am
STL
- SNN
3 stops19h 05m
Multiple Airlines
Sat 4/47:30 am
SNN
- STL
2 stops37h 54m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$768
This American Airlines deal was found by Cheapflights users on 2/8. 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.
Thu 3/269:15 am
STL
- SNN
2 stops16h 05m
American Airlines
Thu 4/21:45 pm
SNN
- STL
2 stops15h 59m
American Airlines
Deal found 2/8![American Airlines logo]()
$718
One-way flights from St. Louis to ShannonSearch for one-way flight options from St. Louis to Shannon. Find affordable one-way fares based on user searches. Data last updated February 12, 2026.
Search for one-way flight options from St. Louis to Shannon. Find affordable one-way fares based on user searches. Data last updated February 12, 2026.
This business-class.com deal was found by Cheapflights users on 2/9. 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 business-class.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/317:30 am
STL
- SNN
2 stops31h 05m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$3,247
This BusinessClass deal was found by Cheapflights users on 2/9. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/319:40 pm
STL
- SNN
1 stop16h 55m
British Airways
Deal found 2/9![British Airways logo]()
$3,356
Find 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 February 12, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $688 (Air Canada) |
Cheapflights Fare Finder
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 February 12, 2026.
Use the filters below to find and compare flights from St. Louis to Shannon that are best for you.
Fly from
St. Louis
Fly to
Shannon
Route
Depart
Return
Price
St. LouisShannon
STL - SNN
STLSNN
Lambert-St Louis
Wed 2/25
4:05 pm-4:45 pm
2 stops42h 40m
Shannon
Sun 3/1
7:50 am-3:29 pm
2 stops37h 39m
$688
St. LouisShannon
STL - SNN
STLSNN
Lambert-St Louis
Thu 3/26
9:15 am-6:20 am
2 stops16h 05m
Shannon
Thu 4/2
1:45 pm-11:44 pm
2 stops15h 59m
$718
St. LouisShannon
STL - SNN
STLSNN
Lambert-St Louis
Wed 3/25
6:57 pm-7:25 pm
2 stops19h 28m
Shannon
Sat 4/4
5:25 pm-6:07 pm
2 stops30h 42m
$736
St. LouisShannon
STL - SNN
STLSNN
Lambert-St Louis
Wed 3/25
2:29 pm-11:30 am
2 stops16h 01m
Shannon
Sat 4/4
1:45 pm-10:09 am
1 stop26h 24m
$763
St. LouisShannon
STL - SNN
STLSNN
Lambert-St Louis
Tue 5/12
1:00 pm-11:20 am
2 stops16h 20m
Shannon
Sun 5/24
9:15 pm-8:05 pm
2 stops28h 50m
$766
St. LouisShannon
STL - SNN
STLSNN
Lambert-St Louis
Wed 3/25
11:25 am-11:30 am
3 stops19h 05m
Shannon
Sat 4/4
5:25 pm-3:24 pm
2 stops27h 59m
$768
St. LouisShannon
STL - SNN
STLSNN
Lambert-St Louis
Wed 3/25
6:57 pm-7:25 pm
2 stops19h 28m
Shannon
Sat 4/4
1:45 pm-10:09 am
1 stop26h 24m
$771
St. LouisShannon
STL - SNN
STLSNN
Lambert-St Louis
Sun 5/31
7:30 am-8:35 pm
2 stops31h 05m
$3,247
St. LouisShannon
STL - SNN
STLSNN
Lambert-St Louis
Sun 5/31
9:40 pm-8:35 pm
1 stop16h 55m
$3,356
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 February.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*2 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on St. Louis-Shannon, Clare 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, Clare flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Shannon, Clare flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on St. Louis-Shannon, Clare 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, Clare 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.
STL-SNN
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.
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 February 12, 2026.
See what other customers who have flown with United Airlines and American Airlines from St. Louis to Shannon have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
7.7
Overall
7.4
Crew
8.1
Entertainment
7.1
Comfort
7.3
Food
6.6
Reviews
1 / 20
10.0
ExcellentDane,Jan 2026
TYS - IAD
Boarding
7.7
Overall
7.4
Crew
8.1
Entertainment
7.1
Comfort
7.3
Food
6.6
Reviews
1 / 20
10.0
ExcellentDane,Jan 2026
TYS - IAD
Boarding
7.7
Overall
7.4
Crew
8.1
Entertainment
7.1
Comfort
7.3
Food
6.6
Reviews
1 / 20
10.0
ExcellentDane,Jan 2026
TYS - IAD
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.
Traveling to a place near Shannon?
Book flights to Shannon if you plan to visit one of these locationsEnnis
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St. Louis and Shannon flights
Browse other St. Louis and Shannon flight options. Last updated on February 12, 2026.
Other flights from St. Louis
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Top 2 airlines flying from St. Louis to Shannon
Discover the top 2 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 February 12, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$483 | Average$719 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$546 | Average$838 | FlexibilityNo cancel fee | On-time69% |