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$637+ 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 11/23. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BSL
Jun 19 — Jun 261
Thu 6/19
Thu 6/26
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 June 14, 2025.

Round-trip from

$637
(Booking.com)
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 June 14, 2025.

This Booking.com deal was found by Cheapflights users on 6/13. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/234:15 pmSTL - BSL
2 stops22h 45mMultiple Airlines
Mon 12/17:00 pmBSL - STL
2 stops51h 26mMultiple Airlines
Deal found 6/13$637
This Lufthansa deal was found by Cheapflights users on 6/13. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/264:50 pmSTL - BSL
1 stop14h 50mLufthansa
Sun 11/96:50 amBSL - STL
1 stop14h 05mLufthansa
Deal found 6/13$654
This United Airlines deal was found by Cheapflights users on 6/13. 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.
Sun 10/266:43 pmSTL - BSL
2 stops18h 57mUnited Airlines
Sun 11/96:50 amBSL - STL
1 stop14h 05mUnited Airlines
Deal found 6/13$655
This British Airways deal was found by Cheapflights users on 6/14. 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.
Fri 10/178:26 amSTL - BSL
2 stops19h 34mBritish Airways
Wed 10/296:15 amBSL - STL
2 stops22h 19mBritish Airways
Deal found 6/14$736
This Gotogate deal was found by Cheapflights users on 6/12. 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.
Fri 7/49:15 amSTL - BSL
2 stops18h 40mAir Canada
Fri 7/118:25 amBSL - STL
2 stops19h 25mAir Canada
Deal found 6/12$951
This American Airlines deal was found by Cheapflights users on 6/12. 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.
Sun 7/278:01 pmSTL - BSL
2 stops19h 49mAmerican Airlines
Sun 8/37:05 amBSL - STL
2 stops19h 09mAmerican Airlines
Deal found 6/12$1,030
This oojo deal was found by Cheapflights users on 6/11. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/248:10 amSTL - BSL
2 stops26h 50mTurkish Airlines
Fri 6/276:55 pmBSL - STL
2 stops34h 50mTurkish Airlines
Deal found 6/11$1,888

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 June 14, 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

Sun 11/23

4:15 pm-10:00 pm

2 stops22h 45m

Basel EuroAirport Swiss

Mon 12/1

7:00 pm-3:26 pm

2 stops51h 26m

$637

St. LouisBasel

STL - BSL

STLBSL

Lambert-St Louis

Sun 10/26

4:50 pm-1:40 pm

1 stop14h 50m

Basel EuroAirport Swiss

Sun 11/9

6:50 am-1:55 pm

1 stop14h 05m

$654

St. LouisBasel

STL - BSL

STLBSL

Lambert-St Louis

Sun 10/26

6:43 pm-7:40 pm

2 stops18h 57m

Basel EuroAirport Swiss

Sun 11/9

6:50 am-1:55 pm

1 stop14h 05m

$655

St. LouisBasel

STL - BSL

STLBSL

Lambert-St Louis

Fri 7/4

9:15 am-10:55 am

2 stops18h 40m

Basel EuroAirport Swiss

Fri 7/11

8:25 am-8:50 pm

2 stops19h 25m

$951

St. LouisBasel

STL - BSL

STLBSL

Lambert-St Louis

Sun 7/27

8:01 pm-10:50 pm

2 stops19h 49m

Basel EuroAirport Swiss

Sun 8/3

7:05 am-7:14 pm

2 stops19h 09m

$1,030

St. LouisBasel

STL - BSL

STLBSL

Lambert-St Louis

Tue 6/24

8:10 am-6:00 pm

2 stops26h 50m

Basel EuroAirport Swiss

Fri 6/27

6:55 pm-10:45 pm

2 stops34h 50m

$1,888

St. LouisBasel

STL - BSL

STLBSL

Lambert-St Louis

Thu 6/26

1:30 pm-10:55 am

2 stops14h 25m

$899

St. LouisBasel

STL - BSL

STLBSL

Lambert-St Louis

Thu 6/26

7:47 pm-7:05 pm

2 stops16h 18m

$997

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

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.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Basel EuroAirport Swiss

Rainfall in Basel by month

Plan your trip to Basel by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Basel EuroAirport Swiss ranges from 1.9 - 3.4 inches per month. June is typically the wettest month, when rainfall can reach 3.4 in. February is typically the driest time to visit Basel EuroAirport Swiss when rainfall is around 1.9 in.

Temperature in Basel by month

Plan your trip to Basel by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Basel EuroAirport Swiss, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 33.8 F).

Reviews of airlines servicing Basel

Get insights into the airlines that provide service to Basel. 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 Basel. Reviews last updated June 14, 2025.
United Airlines
7.4
Good
8,793 reviews

Overall

7.4

Crew

8.1

Comfort

7.3

Entertainment

7.0

Boarding

7.7

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
8,793 reviews
United Airlines
7.4
Good
8,793 reviews

Overall

7.4

Crew

8.1

Comfort

7.3

Entertainment

7.0

Boarding

7.7

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Turkish Airlines
7.3
Good
3,849 reviews
United Airlines
7.4
Good
8,793 reviews

Overall

7.4

Crew

8.1

Comfort

7.3

Entertainment

7.0

Boarding

7.7

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
American Airlines
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,793 reviews

Overall

7.4

Crew

8.1

Comfort

7.3

Entertainment

7.0

Boarding

7.7

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Air Canada
7.1
Good
9,542 reviews
United Airlines
7.4
Good
8,793 reviews

Overall

7.4

Crew

8.1

Comfort

7.3

Entertainment

7.0

Boarding

7.7

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Lufthansa
6.8
Okay
7,145 reviews
United Airlines
7.4
Good
8,793 reviews

Overall

7.4

Crew

8.1

Comfort

7.3

Entertainment

7.0

Boarding

7.7

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

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.

  • 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.

  • What is the cheapest month to book a flight from St. Louis to Basel EuroAirport Swiss?

    Currently, January is the cheapest month in which you can book a flight from St. Louis to Basel EuroAirport Swiss (average of $545). Flying from St. Louis to Basel EuroAirport Swiss in June is currently the most expensive (average of $1,132). 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.

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