Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from St. Louis to Lyon from $421

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Lyon departing on 12/26. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from St. Louis to Lyon

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
4:50 pm - 2:15 pmSTL-LYS
15h 25m1 stop
United Airlines Logo
1:45 pm - 2:18 pmLYS-STL
31h 33m2 stops
$682United Airlines
Find Deal
vie., mar. 27 - mar., mar. 31
United Airlines Logo
4:50 pm - 2:15 pmSTL-LYS
15h 25m1 stop
United Airlines Logo
2:35 pm - 1:30 pmLYS-STL
29h 55m1 stop
$718United Airlines
Find Deal
vie., mar. 27 - mar., mar. 31
British Airways Logo
5:59 pm - 5:30 pmSTL-LYS
17h 31m2 stops
British Airways Logo
11:20 am - 9:48 pmLYS-STL
17h 28m2 stops
$943British Airways
Find Deal
vie., mar. 27 - mar., mar. 31

United Airlines flights from St. Louis to Lyon

Our best United Airlines deals on St. Louis to Lyon flight tickets
United Airlines
Mar 27
STL4:50 pmLambert-St Louis
15h 25m
1 stop
LYS2:15 pmLyon-Saint Exupéry
Mar 31
LYS1:45 pmLyon-Saint Exupéry
31h 33m
2 stops
STL2:18 pmLambert-St Louis
$682
Find similar
United Airlines
Mar 27
STL4:50 pmLambert-St Louis
15h 25m
1 stop
LYS2:15 pmLyon-Saint Exupéry
Mar 31
LYS2:35 pmLyon-Saint Exupéry
29h 55m
1 stop
STL1:30 pmLambert-St Louis
$718
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated noviembre 4, 2025.
Use the filters below to find and compare flights from St. Louis to Lyon that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisLyon

STL - LYS

STLLYS

Lambert-St Louis

vie. 3/27

4:50 pm-2:15 pm

1 stop15h 25m

Lyon-Saint Exupéry

mar. 3/31

1:45 pm-2:18 pm

2 stops31h 33m

$682

St. LouisLyon

STL - LYS

STLLYS

Lambert-St Louis

vie. 3/27

4:50 pm-2:15 pm

1 stop15h 25m

Lyon-Saint Exupéry

mar. 3/31

2:35 pm-1:30 pm

1 stop29h 55m

$718

St. LouisLyon

STL - LYS

STLLYS

Lambert-St Louis

vie. 3/27

5:59 pm-5:30 pm

2 stops17h 31m

Lyon-Saint Exupéry

mar. 3/31

11:20 am-9:48 pm

2 stops17h 28m

$943

St. LouisLyon

STL - LYS

STLLYS

Lambert-St Louis

vie. 12/26

4:05 pm-11:05 am

2 stops36h 00m

$421

St. LouisLyon

STL - LYS

STLLYS

Lambert-St Louis

vie. 12/26

3:50 pm-10:05 am

1 stop11h 15m

$670

St. LouisLyon

STL - LYS

STLLYS

Lambert-St Louis

vie. 12/26

8:42 pm-6:15 pm

3 stops38h 33m

$711

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Lyon from

How to get the cheapest flight ticket from St. Louis to Lyon

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Lyon?

Our data shows that Thursday is the least expensive day to fly to Lyon. Tickets to fly out on this day can be as low as $746. The most expensive day to fly to Lyon is Saturday, with ticket prices averaging around $1,196.

What is the cheapest time of day to depart on your flight to Lyon?

Our data shows that the cheapest St. Louis to Lyon flights are usually those with departure times in the afternoon. Our users have found flights to Lyon in the afternoon for as low as $866. Flights to Lyon are more costly at noon, with an average ticket price of $1,120. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

Can stopping save me money on St. Louis to Lyon flights?

You could potentially save up to 7% on your flight if you consider stops on a St. Louis to Lyon flight.

When to book flights from St. Louis to Lyon

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Lyon according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap St. Louis to Lyon (STL to LYS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Lyon

Direct flights

None
There are no direct flights from St. Louis to Lyon. There are no popular flight routes from St. Louis to Lyon.
Search flight deals

  • How far is Lambert-St Louis to Lyon-Saint Exupéry by plane?

    There are 4588.7 mi between Lambert-St Louis and Lyon-Saint Exupéry. Flights usually cover this in 15h 25m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Lyon-Saint Exupéry Airport?

    Prices for flights from Lambert-St Louis Airport to Lyon-Saint Exupéry Airport are updated daily.

  • How old do you have to be to fly from Lambert-St Louis Airport to Lyon-Saint Exupéry Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Lyon-Saint Exupéry Airport.

  • What documentation or ID do you need to fly to Lyon-Saint Exupéry Airport?

    The travel and health documents you'll need for your trip to Lyon-Saint Exupéry Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Lyon-Saint Exupéry Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Traveling to a place near Lyon?

Book flights to Lyon if you plan to visit one of these locations
Chamonix
Courchevel
Val Thorens
Ferney-Voltaire
Megève
Val-d'Isere
Évian-les-Bains
Morzine
Les Houches
Vienne
Saint-Gervais-les-Bains
Albertville
Tignes
Lons-le-Saunier
Gap
Aubenas
Huez
Val-Cenis
Annemasse
Tournus

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Lyon?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from St. Louis to Lyon. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from St. Louis to Lyon with flexible booking policies on momondo?

Yes. All flights to Lyon from St. Louis on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from St. Louis to Lyon?

Once you have performed a search for St. Louis to Lyon flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from St. Louis to Lyon right now. Can momondo alert me if prices change?

If you are not ready to book a flight from St. Louis to Lyon now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Lyon and let you know when they change.

An easier way to manage your Lyon trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
jue. 12/4
jue. 12/11
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to France