$458 Cheap Flights from St. Louis (STL) to Lyon (LYS)

View $458 flight on Mon, Sep 1, 2025Opens in a new window

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Find available prices by choosing your travel dates.

Cheap Flights from St. Louis to Lyon (STL-LYS)

Prices were available within the past 7 days and start at $458 for one-way flights and $663 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Tue, Aug 5 - Tue, Aug 26
STL
St. Louis
LYS
Lyon
$663 Roundtrip, found 2 days ago
$663
Roundtrip
found 2 days ago
Select United flight, departing Tue, Aug 5 from St. Louis to Lyon, returning Tue, Aug 26, priced at $663 found 2 days ago
United
Tue, Aug 5 - Fri, Aug 22
STL
St. Louis
LYS
Lyon
$671 Roundtrip, found 2 days ago
$671
Roundtrip
found 2 days ago
Select United flight, departing Tue, Aug 5 from St. Louis to Lyon, returning Fri, Aug 22, priced at $671 found 2 days ago
United
Mon, Oct 20 - Tue, Nov 4
STL
St. Louis
LYS
Lyon
$682 Roundtrip, found 2 days ago
$682
Roundtrip
found 2 days ago
Select United flight, departing Mon, Oct 20 from St. Louis to Lyon, returning Tue, Nov 4, priced at $682 found 2 days ago
United
Mon, Oct 20 - Thu, Nov 6
STL
St. Louis
LYS
Lyon
$683 Roundtrip, found 2 days ago
$683
Roundtrip
found 2 days ago
Select United flight, departing Mon, Oct 20 from St. Louis to Lyon, returning Thu, Nov 6, priced at $683 found 2 days ago
United
Mon, Oct 20 - Wed, Nov 5
STL
St. Louis
LYS
Lyon
$689 Roundtrip, found 2 days ago
$689
Roundtrip
found 2 days ago
Select United flight, departing Mon, Oct 20 from St. Louis to Lyon, returning Wed, Nov 5, priced at $689 found 2 days ago
United
Wed, Oct 29 - Tue, Nov 11
STL
St. Louis
LYS
Lyon
$703 Roundtrip, found 2 days ago
$703
Roundtrip
found 2 days ago
Select United flight, departing Wed, Oct 29 from St. Louis to Lyon, returning Tue, Nov 11, priced at $703 found 2 days ago
British Airways
Mon, Jul 28 - Fri, Aug 22
STL
St. Louis
LYS
Lyon
$707 Roundtrip, found 3 days ago
$707
Roundtrip
found 3 days ago
Select British Airways flight, departing Mon, Jul 28 from St. Louis to Lyon, returning Fri, Aug 22, priced at $707 found 3 days ago
Lufthansa
Mon, Jul 28 - Fri, Aug 22
STL
St. Louis
LYS
Lyon
$721 Roundtrip, found 3 days ago
$721
Roundtrip
found 3 days ago
Select Lufthansa flight, departing Mon, Jul 28 from St. Louis to Lyon, returning Fri, Aug 22, priced at $721 found 3 days ago
Air Canada
Mon, Jul 28 - Fri, Aug 22
STL
St. Louis
LYS
Lyon
$733 Roundtrip, found 3 days ago
$733
Roundtrip
found 3 days ago
Select Air Canada flight, departing Mon, Jul 28 from St. Louis to Lyon, returning Fri, Aug 22, priced at $733 found 3 days ago
Air France
Tue, Aug 26 - Thu, Sep 4
STL
St. Louis
XYD
Lyon
$895 Roundtrip, found 6 days ago
$895
Roundtrip
found 6 days ago
Select Air France flight, departing Tue, Aug 26 from St. Louis to Lyon, returning Thu, Sep 4, priced at $895 found 6 days ago

Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Saint-Exupery Airport (LYS) cost?
Discover the latest flight deals from STL to LYS by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from STL to LYS?
The cheapest flights from STL to LYS are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from STL to LYS?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that’ll take you from STL to LYS. Sort your results by “Price (lowest to highest)” to snap up a great deal.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Saint-Exupery Airport (LYS)?
Nonstop flights from Lambert-St. Louis Intl. Airport (STL) to Saint-Exupery Airport (LYS) aren’t available daily, so you’ll have to take a flight with a layover. Explore your options with our filter tool. Enter your dates and pick either “1 Stop” or “2+ Stops.”
What day of the week has the most flights from STL to LYS?
Friday is typically the busiest day for flights, while Tuesday tends to be the quietest.* Remember that flight schedules can change based on various factors, such as the time of year and carrier.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Lambert-St. Louis Intl. Airport (STL) to Saint-Exupery Airport (LYS)?
To avoid potential delays on the Lambert-St. Louis Intl. Airport (STL) to Saint-Exupery Airport (LYS) route, aim to fly before 3 PM. Departures after this time have a 22% higher chance of cancellation.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.
Is it cheaper to buy a plane ticket from Lambert-St. Louis Intl. Airport (STL) to Saint-Exupery Airport (LYS) last-minute?
Booking your plane ticket from STL to LYS shortly before your getaway is generally more expensive. But if there’s some wiggle room with your departure times and dates, you could land a cheap last-minute fare.
Is it cheaper to book a STL to LYS flight and hotel package?
You can save money by securing a STL to LYS flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it’s easy to manage it all in one convenient place. Once you’ve chosen your preferred flights and accommodations, consider adding extras including tours, car rentals and activities.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to Saint-Exupery Airport (LYS)?
Typically, you can modify or cancel your STL to LYS flight. However, additional charges may apply, especially if you made your booking over 24 hours ago. Double-check your itinerary for the airline’s fees and rules on flight changes, or if you’d like more information, visit our Customer Service portal.
*Available to One Key members.