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$518+ Cheap flights from St. Louis (STL) to Lyon (LYS)

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 2/6. Fares are subject to change and may not be available on all flights or dates of travel.
STL — LYS
Dec 26 — Jan 21
Fri 12/26
Fri 1/2
1 adult, Economy
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1. Tell us where you want to go

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Cheap flight deals from St. Louis to Lyon

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Lyon (LYS). 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 26, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$518
(United Airlines)
Provider with most accurate pricing for Lambert-St Louis-Lyon-Saint Exupéry flight deals.
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Provider most trusted by Cheapflights users for Lambert-St Louis-Lyon-Saint Exupéry flights.
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From Lambert-St Louis to Lyon-Saint Exupéry
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Find flight deals from St. Louis to Lyon

Cheapest flights from St. Louis to Lyon
Explore the most affordable flight options available from St. Louis to Lyon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 26, 2025.

This Flightnetwork deal was found by Cheapflights users on 11/25. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/206:30 amSTL - LYS
2 stops21h 35mAir Canada
Thu 1/11:55 pmLYS - STL
2 stops32h 34mAir Canada
Deal found 11/25$2,154
This Flightnetwork deal was found by Cheapflights users on 11/25. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/206:30 amSTL - LYS
2 stops21h 35mMultiple Airlines
Thu 1/16:50 pmLYS - STL
1 stop26h 05mMultiple Airlines
Deal found 11/25$3,478

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Lyon 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 26, 2025.
Use the filters below to find and compare flights from St. Louis to Lyon that are best for you.

Fly from

St. Louis

Fly to

Lyon

Route

Depart

Return

Price

St. LouisLyon

STL - LYS

STLLYS

Lambert-St Louis

Fri 2/6

7:00 am-11:05 am

2 stops21h 05m

Lyon-Saint Exupéry

Tue 2/10

1:40 pm-5:43 pm

2 stops35h 03m

$518

St. LouisLyon

STL - LYS

STLLYS

Lambert-St Louis

Sat 12/20

6:30 am-11:05 am

2 stops21h 35m

Lyon-Saint Exupéry

Thu 1/1

1:55 pm-3:29 pm

2 stops32h 34m

$2,154

St. LouisLyon

STL - LYS

STLLYS

Lambert-St Louis

Sat 12/20

6:30 am-11:05 am

2 stops21h 35m

Lyon-Saint Exupéry

Thu 1/1

6:50 pm-1:55 pm

1 stop26h 05m

$3,478

St. LouisLyon

STL - LYS

STLLYS

Lambert-St Louis

Wed 4/8

2:19 pm-4:45 pm

2 stops19h 26m

Lyon-Saint Exupéry

Wed 4/15

1:35 pm-4:11 pm

2 stops33h 36m

$5,830

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/23

Compare providers for flights from St. Louis to Lyon

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 Lyon in November.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

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

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

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

Find hourly flight availability from St. Louis to Lyon. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 26, 2025.

One of the essential ways to save on airfare from St. Louis to Lyon is to remain as flexible as possible. Flights that are in the evening tend to be the most expensive. A flight in the afternoon could potentially save you up to 55% on airfare.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Lyon. 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 Lyon?

    United Airlines and Air Canada can get you from St. Louis to Lyon in just under 21h 05m. Your travel time can differ by up to 30m. Airlines will cover a distance of 4602 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 Lyon that include hotel bookings?

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

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

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

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

    Yes. Cheapflights offers flight deals from St. Louis to Lyon 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

Traveling to a place near Lyon?

Book flights to Lyon if you plan to visit one of these locations
Annemasse
Huez

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