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$445+ Cheap flights from St. Louis (STL) to Basel EuroAirport Swiss (BSL)

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 1/14. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BSL
Dec 24 — Dec 311
Wed 12/24
Wed 12/31
1 adult, Economy
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Cheap flight deals from St. Louis to Basel

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Basel (BSL). 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 November 24, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
1 star

Round-trip from

$445
(Kiwi.com)
Provider with most accurate pricing for Lambert-St Louis-Basel EuroAirport Swiss flight deals.
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Provider most trusted by Cheapflights users for Lambert-St Louis-Basel EuroAirport Swiss flights.
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From Lambert-St Louis to Basel EuroAirport Swiss
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Find flight deals from St. Louis to Basel

Cheapest flights from St. Louis to Basel
Explore the most affordable flight options available from St. Louis to Basel. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 24, 2025.

This Flysmarter deal was found by Cheapflights users on 11/22. 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 Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/1512:49 pmSTL - BSL
2 stops14h 51mAir France
Fri 1/166:05 amBSL - STL
2 stops18h 45mAir France
Deal found 11/22$707
This Air France deal was found by Cheapflights users on 11/23. 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.
Wed 12/241:22 pmSTL - BSL
2 stops14h 18mMultiple Airlines
Wed 12/316:05 amBSL - STL
2 stops19h 59mMultiple Airlines
Deal found 11/23$1,166
This Ovago deal was found by Cheapflights users on 11/23. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/243:50 pmSTL - BSL
1 stop19h 40mLufthansa
Wed 12/3110:35 amBSL - STL
2 stops18h 08mLufthansa
Deal found 11/23$1,337
This Cheapflightsfares deal was found by Cheapflights users on 11/23. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/231:05 pmSTL - BSL
2 stops13h 50mMultiple Airlines
Tue 1/1310:35 amBSL - STL
2 stops15h 52mMultiple Airlines
Deal found 11/23$1,601
This Cheapflightsfares deal was found by Cheapflights users on 11/22. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/193:50 pmSTL - BSL
1 stop11h 15mMultiple Airlines
Fri 12/261:10 pmBSL - STL
2 stops15h 33mMultiple Airlines
Deal found 11/22$2,475
This Cheapflightsfares deal was found by Cheapflights users on 11/23. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/246:43 pmSTL - BSL
2 stops14h 22mMultiple Airlines
Sun 2/110:45 amBSL - STL
2 stops15h 42mMultiple Airlines
Deal found 11/23$2,756
This Cheapflightsfares deal was found by Cheapflights users on 11/23. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/212:55 pmSTL - BSL
2 stops14h 00mMultiple Airlines
Thu 12/1110:35 amBSL - STL
2 stops15h 38mMultiple Airlines
Deal found 11/23$3,238
This Cheapflightsfares deal was found by Cheapflights users on 11/21. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/2212:44 pmSTL - BSL
2 stops14h 21mMultiple Airlines
Sat 11/2910:45 amBSL - STL
2 stops15h 31mMultiple Airlines
Deal found 11/21$4,056

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Basel 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 November 24, 2025.
Use the filters below to find and compare flights from St. Louis to Basel EuroAirport Swiss that are best for you.

Fly from

St. Louis

Fly to

Basel

Route

Depart

Return

Price

St. LouisBasel

STL - BSL

STLBSL

Lambert-St Louis

Wed 1/14

3:50 pm-9:55 am

1 stop11h 05m

Basel EuroAirport Swiss

Wed 1/21

10:35 am-10:58 pm

2 stops19h 23m

$445

St. LouisBasel

STL - BSL

STLBSL

Lambert-St Louis

Thu 1/15

12:44 pm-12:30 pm

2 stops16h 46m

Basel EuroAirport Swiss

Wed 1/21

1:10 pm-11:59 pm

2 stops17h 49m

$489

St. LouisBasel

STL - BSL

STLBSL

Lambert-St Louis

Thu 1/15

5:04 pm-10:50 pm

2 stops22h 46m

Basel EuroAirport Swiss

Wed 1/21

11:10 am-10:59 pm

2 stops18h 49m

$491

St. LouisBasel

STL - BSL

STLBSL

Lambert-St Louis

Wed 1/28

9:59 am-9:50 am

2 stops16h 51m

Basel EuroAirport Swiss

Sun 2/1

11:15 am-4:37 pm

2 stops36h 22m

$495

St. LouisBasel

STL - BSL

STLBSL

Lambert-St Louis

Wed 1/28

11:22 am-9:10 am

2 stops14h 48m

Basel EuroAirport Swiss

Sun 2/1

10:45 am-10:58 pm

2 stops19h 13m

$495

St. LouisBasel

STL - BSL

STLBSL

Lambert-St Louis

Tue 1/6

11:20 am-7:40 pm

2 stops25h 20m

Basel EuroAirport Swiss

Tue 1/13

9:50 am-7:27 pm

2 stops16h 37m

$498

St. LouisBasel

STL - BSL

STLBSL

Lambert-St Louis

Wed 1/14

11:22 am-9:10 am

2 stops14h 48m

Basel EuroAirport Swiss

Wed 1/21

1:10 pm-11:59 pm

3 stops17h 49m

$622

St. LouisBasel

STL - BSL

STLBSL

Lambert-St Louis

Fri 12/26

3:50 pm-10:05 am

1 stop11h 15m

$520

St. LouisBasel

STL - BSL

STLBSL

Lambert-St Louis

Mon 2/2

6:40 pm-4:05 pm

2 stops14h 25m

$4,469

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/22

  • Most accurate provider: When it comes to deals on St. Louis-Basel EuroAirport Swiss flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Basel EuroAirport Swiss flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Basel EuroAirport Swiss flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on St. Louis-Basel EuroAirport Swiss 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-Basel EuroAirport Swiss 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 Basel

Have a flexible travel schedule? Discover the best time to fly to Basel 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.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Basel. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from St. Louis to Basel EuroAirport Swiss?

    Airlines like Lufthansa, United Airlines, and British Airways fly from St. Louis to Basel EuroAirport Swiss in about 11h 05m. The time it takes to get you to your destination can typically vary by up to 11h 41m. Airlines will cover a distance of 4630 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • Can I find deals for flights from St. Louis to Basel that include hotel bookings?

    Yes. In addition to deals on St. Louis to Basel flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Basel?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Basel.

  • Can I find deals for business class flights from St. Louis to Basel?

    Yes. Cheapflights offers flight deals from St. Louis to Basel by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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