Cheap Flights from St. Louis (STL) to Grenoble (GNB)

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Grenoble (GNB-Grenoble - Isere)

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Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Grenoble - Isere Airport (GNB) cost?
Get a cheap one-way flight or cheap return flight from Lambert-St. Louis Intl. Airport (STL) to Grenoble - Isere Airport (GNB) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Lambert-St. Louis Intl. Airport (STL) to Grenoble - Isere Airport (GNB)?
Traveling in is a great way to save, as it's the cheapest month for flights between STL and GNB. You'll usually find the lowest fares during off-peak months.
What is the cheapest airline that flies from Lambert-St. Louis Intl. Airport (STL) to Grenoble - Isere Airport (GNB)?
Expedia's filter tool lets you easily compare travel time, airlines and fares all in one place. Choose your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest STL to GNB flight.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Grenoble - Isere Airport (GNB)?
Direct flights from Lambert-St. Louis Intl. Airport (STL) to Grenoble - Isere Airport (GNB) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your travel details and choose either "1 Stop" or "2+ Stops."
What day of the week has the most flights from STL to GNB?
Friday is typically the busiest day for flights, while Tuesday is often the quietest.* Just remember that flight schedules can change based on various factors, such as the carrier and season.*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 Grenoble - Isere Airport (GNB)?
To avoid possible delays on the Lambert-St. Louis Intl. Airport (STL) to Grenoble - Isere Airport (GNB) route, fly before 3 PM. Departures after this hour have a 22% higher chance of being canceled.**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 Grenoble - Isere Airport (GNB) last-minute?
Last-minute bookings from STL to GNB are generally more expensive. For the lowest rates, start looking for flights well ahead of time. That said, if your travel plans are flexible, you may score a cheap fare just before your departure.
Is it cheaper to book a STL to GNB flight and hotel package?
Opting for a STL to GNB flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels all in one place. Select from our wide range of hotels and then add car rentals, flights and activities to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to Grenoble - Isere Airport (GNB)?
If you reserved your STL to GNB flight within the last 24 hours, you may be able to cancel or modify it without any fees. Depending on the airline and the type of fare you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal for more details.

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
Grenoble - Isere
Distance
4628 mi

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St. Louis to Grenoble Flights

The cheapest times to fly from St. Louis to Grenoble

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 Grenoble are during the month of . You can find some of the cheapest flights from St. Louis to Grenoble with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from St. Louis to Grenoble: 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 Grenoble

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 Grenoble in 2026. You can also book with separate airlines for your outbound and return journeys, from 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 Grenoble 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 Grenoble 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 Grenoble Flights

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*Available to One Key members.