$672 Cheap Flights from Mendoza (MDZ) to St. Louis (STL)

View $672 flight on Tue, Mar 10, 2026Opens in a new window

Popular airlines from Mendoza (MDZ-Governor Francisco Gabrielli Intl.) to St. Louis Lambert Intl. Airport (STL)

Cheap Flights from Mendoza to St. Louis (MDZ-STL)

Prices were available within the past 7 days and start at $672 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frequently asked questions

How much does a flight from Governor Francisco Gabrielli Intl. Airport (MDZ) to Lambert-St. Louis Intl. Airport (STL) cost?
Snag a cheap one-way flight from $672 or cheap return flight from Governor Francisco Gabrielli Intl. Airport (MDZ) to Lambert-St. Louis Intl. Airport (STL) 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 Governor Francisco Gabrielli Intl. Airport (MDZ) to Lambert-St. Louis Intl. Airport (STL)?
is the least expensive month to fly from MDZ to STL. Traveling outside of peak seasons is often the key to finding better deals on flights.
What is the cheapest airline that flies from Governor Francisco Gabrielli Intl. Airport (MDZ) to Lambert-St. Louis Intl. Airport (STL)?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from MDZ to STL. Then, sort your results by "Price (lowest to highest)" to snag a great deal.
How many flights per day from Governor Francisco Gabrielli Intl. Airport (MDZ) to Lambert-St. Louis Intl. Airport (STL)?
You'll have to take a flight with a layover if you're traveling from Governor Francisco Gabrielli Intl. Airport (MDZ) to Lambert-St. Louis Intl. Airport (STL). There are no daily direct flights on this route. However, simply filter your search to include one or more stops to discover an option that works for you.
What day of the week has the most flights from MDZ to STL?
You'll generally find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Governor Francisco Gabrielli Intl. Airport (MDZ) to Lambert-St. Louis Intl. Airport (STL)?
To avoid potential delays on the Governor Francisco Gabrielli Intl. Airport (MDZ) to Lambert-St. Louis Intl. Airport (STL) route, aim to travel before 3 PM. Later departures 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 Governor Francisco Gabrielli Intl. Airport (MDZ) to Lambert-St. Louis Intl. Airport (STL) last-minute?
Booking your plane ticket from MDZ to STL right before your journey is generally more expensive. However, if you're flexible with your travel times and dates, you could snag a cheap last-minute fare.
Is it cheaper to book a MDZ to STL flight and hotel package?
Opting for a MDZ to STL flight and hotel package is typically cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip all in one place. Select from our impressive range of hotels and then add flights, car rentals 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 Governor Francisco Gabrielli Intl. Airport (MDZ) to Lambert-St. Louis Intl. Airport (STL)?
Typically, you can reschedule or cancel your MDZ to STL flight. However, there may be additional charges, especially if you made your booking over 24 hours ago. Check your itinerary for the airline's policies and fees on flight changes, or if you need more details, visit our Customer Service portal.

Travel information

Origin airport
Governor Francisco Gabrielli Intl.
Destination airport
Lambert-St. Louis Intl.
Distance
5134 mi

Book with confidence

Mendoza to St. Louis Flights

The cheapest times to fly from Mendoza to St. Louis

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

 

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

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

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 Mendoza to St. Louis in 2026. You can also book with separate airlines for your outbound and return journeys, from $672 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 Mendoza to St. Louis 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 Mendoza to St. Louis 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.

 

Mendoza to St. Louis Flights

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*Available to One Key members.