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Lausanne

$452+ Cheap flights from St. Louis (STL) to Lausanne, Switzerland

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 12/29. Fares are subject to change and may not be available on all flights or dates of travel.
STL — GVA
Nov 20 — Nov 271
Thu 11/20
Thu 11/27
1 adult, Economy
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Find flight deals from St. Louis to Lausanne

Cheapest flights from St. Louis to Lausanne
Explore the most affordable flight options available from St. Louis to Lausanne. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 21, 2025.

This United Airlines deal was found by Cheapflights users on 10/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/54:05 pmSTL - GVA
2 stops34h 30mUnited Airlines
Fri 12/126:45 amGVA - STL
1 stop14h 10mUnited Airlines
Deal found 10/21$545

Cheap flight deals from St. Louis to Lausanne

Keep the following information in mind while searching for St. Louis to Lausanne flight deals. Data was last updated October 21, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$551
(United Airlines)

One-way from

$452
(United Airlines)

Popular in

June

Cheapest in

December

Average price

$756
Provider with most accurate pricing for Lambert-St Louis-Geneva Geneve-Cointrin flight deals.
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Provider most trusted by Cheapflights users for Lambert-St Louis-Geneva Geneve-Cointrin flights.
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From Lambert-St Louis to Lausanne
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One-way flight from Lambert-St Louis to Lausanne
Search Deals
Highest demand for flights based on searches. 21% potential increase in price ($258 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($38 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Lausanne 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 October 21, 2025.
Use the filters below to find and compare flights from St. Louis to Lausanne that are best for you.

Fly from

St. Louis

Fly to

Lausanne

Route

Depart

Return

Price

St. LouisGeneva

STL - GVA

STLGVA

Lambert-St Louis

Thu 1/8

12:44 pm-7:35 am

1 stop11h 51m

Geneva Geneve-Cointrin

Thu 2/5

9:15 am-5:18 pm

1 stop15h 03m

$551

St. LouisGeneva

STL - GVA

STLGVA

Lambert-St Louis

Fri 3/27

4:50 pm-1:05 pm

1 stop14h 15m

Geneva Geneve-Cointrin

Tue 3/31

9:20 am-4:40 pm

1 stop14h 20m

$666

St. LouisGeneva

STL - GVA

STLGVA

Lambert-St Louis

Mon 12/29

9:55 am-6:50 pm

2 stops25h 55m

$452

St. LouisGeneva

STL - GVA

STLGVA

Lambert-St Louis

Mon 12/29

4:05 pm-9:50 am

2 stops34h 45m

$454

St. LouisGeneva

STL - GVA

STLGVA

Lambert-St Louis

Sat 12/27

6:35 pm-9:45 am

2 stops32h 10m

$464

St. LouisGeneva

STL - GVA

STLGVA

Lambert-St Louis

Sat 12/27

6:35 pm-9:50 pm

3 stops44h 15m

$592

St. LouisGeneva

STL - GVA

STLGVA

Lambert-St Louis

Sat 12/27

1:05 pm-7:35 am

1 stop11h 30m

$2,092

St. LouisGeneva

STL - GVA

STLGVA

Lambert-St Louis

Sat 2/7

10:17 am-3:40 pm

2 stops22h 23m

$3,660

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/20

Best time to book a flight from St. Louis to Lausanne

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

What is the cheapest month to book a flight from St. Louis to Lausanne?

Currently, December is the cheapest month in which you can book a flight from St. Louis to Lausanne (average of $602). Flying from St. Louis to Lausanne in November is currently the most expensive (average of $1,102). 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.

What is the cheapest time of day to fly from STL to LS9?

Find hourly flight availability from St. Louis to Lausanne. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 21, 2025.

When flying from St. Louis to Lausanne, 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 40% versus a flight in the morning.

How much does it cost to fly round-trip from St. Louis to Lausanne?

Reviews of airlines servicing Lausanne

Get insights into the airlines that provide service to Lausanne. 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 Lausanne. Reviews last updated October 21, 2025.
Peruse reviews from past customers who have flown with United Airlines, Air Canada, and Lufthansa from St. Louis to Lausanne to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,991 reviews

Food

6.6

Entertainment

7.1

Overall

7.4

Boarding

7.7

Comfort

7.3

Crew

8.1

Reviews

1 / 20
4.0
Okay

Tim,Sep 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.
United Airlines
7.4
Good
8,991 reviews
United Airlines
7.4
Good
8,991 reviews

Food

6.6

Entertainment

7.1

Overall

7.4

Boarding

7.7

Comfort

7.3

Crew

8.1

Reviews

1 / 20
4.0
Okay

Tim,Sep 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.
Air Canada
7.1
Good
10,337 reviews
United Airlines
7.4
Good
8,991 reviews

Food

6.6

Entertainment

7.1

Overall

7.4

Boarding

7.7

Comfort

7.3

Crew

8.1

Reviews

1 / 20
4.0
Okay

Tim,Sep 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.
Lufthansa
6.8
Okay
7,508 reviews
United Airlines
7.4
Good
8,991 reviews

Food

6.6

Entertainment

7.1

Overall

7.4

Boarding

7.7

Comfort

7.3

Crew

8.1

Reviews

1 / 20
4.0
Okay

Tim,Sep 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.

Related info for your journey

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

  • What airport do you fly from for flights from St. Louis to Lausanne?

    For a flight from St. Louis to Lausanne, you will be flying from Lambert-St Louis. Lambert-St Louis (STL) is just 12.7 mi from the center of the city. Lambert-St Louis is the only St. Louis airport and it handles 0 outbound flights to Lausanne per day. 3 airlines have flights to Lausanne from Lambert-St Louis on a regular basis.

  • How long is the flight from St. Louis to Lausanne?

    There are many flights that can get you from St. Louis to Lausanne in 11h 51m. Fly via United Airlines to get the fastest option. Airlines will cover a distance of 4624 mi.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from St. Louis to Lausanne 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 Lausanne?

    Currently, December is the cheapest month in which you can book a flight from St. Louis to Lausanne (average of $602). Flying from St. Louis to Lausanne in November is currently the most expensive (average of $1,102). 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.

See more FAQs

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Top 3 airlines flying from St. Louis to Lausanne

Discover the top 3 airlines that operate flights from St. Louis to Lausanne. 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 October 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$650Average$1,067FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$668Average$1,184FlexibilityNo cancel feeOn-time76%
Air CanadaCheapest$690Average$1,373FlexibilityNo cancel feeOn-time67%

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