$399 Cheap Flights from St. Louis (STL) to Lyon (LYS)

View $399 flight on Mon, Jan 12, 2026Opens in a new window

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Saint-Exupery Airport (LYS)

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

Prices were available within the past 7 days and start at $399 for one-way flights and $532 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Lufthansa
Fri, Jan 23 - Thu, Jan 29
STL
St. Louis
LYS
Lyon
$532 Roundtrip, found 3 hours ago
$532
Roundtrip
found 3 hours ago
Select Lufthansa flight, departing Fri, Jan 23 from St. Louis to Lyon, returning Thu, Jan 29, priced at $532 found 3 hours ago
Air Canada
Fri, Jan 23 - Thu, Jan 29
STL
St. Louis
LYS
Lyon
$539 Roundtrip, found 3 hours ago
$539
Roundtrip
found 3 hours ago
Select Air Canada flight, departing Fri, Jan 23 from St. Louis to Lyon, returning Thu, Jan 29, priced at $539 found 3 hours ago
Air Canada
Fri, Jan 16 - Sat, Feb 7
STL
St. Louis
LYS
Lyon
$545 Roundtrip, found 9 hours ago
$545
Roundtrip
found 9 hours ago
Select Air Canada flight, departing Fri, Jan 16 from St. Louis to Lyon, returning Sat, Feb 7, priced at $545 found 9 hours ago
Air Canada
Fri, Jan 16 - Sat, Feb 7
STL
St. Louis
LYS
Lyon
$547 Roundtrip, found 9 hours ago
$547
Roundtrip
found 9 hours ago
Select Air Canada flight, departing Fri, Jan 16 from St. Louis to Lyon, returning Sat, Feb 7, priced at $547 found 9 hours ago
Lufthansa
Fri, Jan 23 - Thu, Jan 29
STL
St. Louis
LYS
Lyon
$552 Roundtrip, found 3 hours ago
$552
Roundtrip
found 3 hours ago
Select Lufthansa flight, departing Fri, Jan 23 from St. Louis to Lyon, returning Thu, Jan 29, priced at $552 found 3 hours ago
British Airways
Fri, Jan 23 - Thu, Jan 29
STL
St. Louis
LYS
Lyon
$554 Roundtrip, found 3 hours ago
$554
Roundtrip
found 3 hours ago
Select British Airways flight, departing Fri, Jan 23 from St. Louis to Lyon, returning Thu, Jan 29, priced at $554 found 3 hours ago
Lufthansa
Fri, Jan 23 - Thu, Jan 29
STL
St. Louis
LYS
Lyon
$555 Roundtrip, found 3 hours ago
$555
Roundtrip
found 3 hours ago
Select Lufthansa flight, departing Fri, Jan 23 from St. Louis to Lyon, returning Thu, Jan 29, priced at $555 found 3 hours ago
Lufthansa
Fri, Jan 23 - Thu, Jan 29
STL
St. Louis
LYS
Lyon
$558 Roundtrip, found 3 hours ago
$558
Roundtrip
found 3 hours ago
Select Lufthansa flight, departing Fri, Jan 23 from St. Louis to Lyon, returning Thu, Jan 29, priced at $558 found 3 hours ago
Iberia
Fri, Jan 23 - Thu, Jan 29
STL
St. Louis
LYS
Lyon
$567 Roundtrip, found 3 hours ago
$567
Roundtrip
found 3 hours ago
Select Iberia flight, departing Fri, Jan 23 from St. Louis to Lyon, returning Thu, Jan 29, priced at $567 found 3 hours ago
United
Wed, Nov 26 - Tue, Dec 2
STL
St. Louis
LYS
Lyon
$745 Roundtrip, found 3 hours ago
$745
Roundtrip
found 3 hours ago
Select United flight, departing Wed, Nov 26 from St. Louis to Lyon, returning Tue, Dec 2, priced at $745 found 3 hours ago

Alternative airports near Lyon

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Saint-Exupery LYS. Cheapest option available. Average driving time to city center is 26 minutes. Flights from $1,705
LYS
Saint-Exupery
Cheapest
Average driving time to city center26 min
Flights from $1,705

Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Saint-Exupery Airport (LYS) cost?
Lock in a cheap one-way flight from $399 or cheap return flight from $532 from Lambert-St. Louis Intl. Airport (STL) to Saint-Exupery Airport (LYS) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Lambert-St. Louis Intl. Airport (STL) to Saint-Exupery Airport (LYS)?
Planning your trip for January can help you save, as it's the cheapest month for flights between STL and LYS. You'll typically find the lowest fares during off-peak months.
What is the cheapest airline that flies from Lambert-St. Louis Intl. Airport (STL) to Saint-Exupery Airport (LYS)?
To find the cheapest airline flying from STL to LYS, use Expedia's filter tool. Tailor your search based on your travel style, such as preferred carriers and seat class. You can then sort your results by "Price (lowest to highest)" to discover the cheapest flight right away.
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.

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
Saint-Exupery
Airlines serving
Aer Lingus, Air Canada, Air France, American Airlines, Austrian Airlines, British Airways, Brussels Airlines, Delta, Iberia, KLM, Lufthansa, Scandinavian Airlines, United
Roundtrip price
$532
Distance
4604 mi

Book with confidence

St. Louis to Lyon Flights

The cheapest times to fly from St. Louis to Lyon

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from St. Louis to Lyon are during the month of January. You can find some of the cheapest flights from St. Louis to Lyon with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from St. Louis to Lyon

Sunday is one of the best days to book for cheap flights from St. Louis to Lyon: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from St. Louis to Lyon

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from St. Louis to Lyon in 2025. You can also book with separate airlines for your outbound and return journeys, from $399 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap St. Louis to Lyon flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your St. Louis to Lyon airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

St. Louis to Lyon Flights

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*Available to One Key members.