$760 Cheap Flights from Prague (PRG) to St. Louis (STL)

View $760 flight on Mon, Jun 2, 2025Opens in a new window

Popular airlines from Vaclav Havel Airport (PRG) to St. Louis Lambert Intl. Airport (STL)

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Cheap Flights from Prague to St. Louis (PRG-STL)

Prices were available within the past 7 days and start at $760 for one-way flights and $826 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Scandinavian Airlines
Thu, Jun 12 - Thu, Jun 19
PRG
Prague
STL
St. Louis
$826 Roundtrip, found 3 days ago
$826
Roundtrip
found 3 days ago
Select Scandinavian Airlines flight, departing Thu, Jun 12 from Prague to St. Louis, returning Thu, Jun 19, priced at $826 found 3 days ago
Iberia
Wed, Oct 1 - Wed, Oct 22
PRG
Prague
STL
St. Louis
$842 Roundtrip, found 16 hours ago
$842
Roundtrip
found 16 hours ago
Select Iberia flight, departing Wed, Oct 1 from Prague to St. Louis, returning Wed, Oct 22, priced at $842 found 16 hours ago
Lufthansa
Wed, Oct 1 - Wed, Oct 22
PRG
Prague
STL
St. Louis
$889 Roundtrip, found 16 hours ago
$889
Roundtrip
found 16 hours ago
Select Lufthansa flight, departing Wed, Oct 1 from Prague to St. Louis, returning Wed, Oct 22, priced at $889 found 16 hours ago
Air Canada
Sat, Oct 4 - Wed, Oct 22
PRG
Prague
STL
St. Louis
$890 Roundtrip, found 1 day ago
$890
Roundtrip
found 1 day ago
Select Air Canada flight, departing Sat, Oct 4 from Prague to St. Louis, returning Wed, Oct 22, priced at $890 found 1 day ago
Air Canada
Wed, Oct 1 - Wed, Oct 22
PRG
Prague
STL
St. Louis
$892 Roundtrip, found 16 hours ago
$892
Roundtrip
found 16 hours ago
Select Air Canada flight, departing Wed, Oct 1 from Prague to St. Louis, returning Wed, Oct 22, priced at $892 found 16 hours ago
Air Canada
Sat, Oct 4 - Wed, Oct 22
PRG
Prague
STL
St. Louis
$895 Roundtrip, found 1 day ago
$895
Roundtrip
found 1 day ago
Select Air Canada flight, departing Sat, Oct 4 from Prague to St. Louis, returning Wed, Oct 22, priced at $895 found 1 day ago
Air Canada
Sat, Oct 4 - Wed, Oct 22
PRG
Prague
STL
St. Louis
$898 Roundtrip, found 1 day ago
$898
Roundtrip
found 1 day ago
Select Air Canada flight, departing Sat, Oct 4 from Prague to St. Louis, returning Wed, Oct 22, priced at $898 found 1 day ago
Air Canada
Wed, Oct 1 - Wed, Oct 22
PRG
Prague
STL
St. Louis
$899 Roundtrip, found 16 hours ago
$899
Roundtrip
found 16 hours ago
Select Air Canada flight, departing Wed, Oct 1 from Prague to St. Louis, returning Wed, Oct 22, priced at $899 found 16 hours ago
British Airways
Sat, Oct 4 - Wed, Oct 22
PRG
Prague
STL
St. Louis
$900 Roundtrip, found 1 day ago
$900
Roundtrip
found 1 day ago
Select British Airways flight, departing Sat, Oct 4 from Prague to St. Louis, returning Wed, Oct 22, priced at $900 found 1 day ago
Air Canada
Wed, Oct 1 - Wed, Oct 22
PRG
Prague
STL
St. Louis
$900 Roundtrip, found 16 hours ago
$900
Roundtrip
found 16 hours ago
Select Air Canada flight, departing Wed, Oct 1 from Prague to St. Louis, returning Wed, Oct 22, priced at $900 found 16 hours ago
Flights from Prague (PRG) to St. Louis (STL)
Origin airport
Vaclav Havel
Destination airport
Lambert-St. Louis Intl.
Airlines serving
Aer Lingus, Air Canada, British Airways, Brussels Airlines, Finnair, Iberia, Lufthansa, Scandinavian Airlines
Roundtrip price
$826
Distance
4786 mi

Prague to St. Louis Flights

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

 

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

Sunday is one of the best days to book for cheap flights from Prague 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 Prague 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 Prague to St. Louis in 2025. You can also book with separate airlines for your outbound and return journeys, from $760 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 Prague 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 Prague 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.

 

Frequently asked questions

How much does a flight from Vaclav Havel Airport (PRG) to Lambert-St. Louis Intl. Airport (STL) cost?
Discover the latest flight deals from PRG to STL 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 PRG to STL?
The cheapest flights from PRG to STL 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 PRG to STL?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that’ll take you from PRG to STL. Sort your results by “Price (lowest to highest)” to snap up a great deal.
How many flights per day from Vaclav Havel Airport (PRG) to Lambert-St. Louis Intl. Airport (STL)?
Direct flights from Vaclav Havel Airport (PRG) to Lambert-St. Louis Intl. Airport (STL) 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 dates and click on either “1 Stop” or “2+ Stops.”
What day of the week has the most flights from PRG to STL?
Friday is usually the busiest day for flights, while Tuesday tends to be the quietest.* Just remember that flight schedules can vary based on a range of factors, such as the time of year and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Vaclav Havel Airport (PRG) to Lambert-St. Louis Intl. Airport (STL)?
Book a flight from Vaclav Havel Airport (PRG) to Lambert-St. Louis Intl. Airport (STL) that leaves before 3 PM to reduce the risk of cancellations and delays. Departures after this time are on average 22% more likely to be 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 Vaclav Havel Airport (PRG) to Lambert-St. Louis Intl. Airport (STL) last-minute?
Booking your flight from PRG to STL right before your getaway is typically more expensive. But if you’re flexible with your departure dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a PRG to STL flight and hotel package?
Compared with arranging flights and hotels separately, booking a PRG to STL flight and hotel package with Expedia could result in significant savings. Better yet, having everything in one convenient place will take the hassle out of planning your trip. Simply secure your flights and select from our extensive range of stays, then tailor your trip with other add-ons like tours, activities and car rentals.
Can I cancel or change the date of my flight from Vaclav Havel Airport (PRG) to Lambert-St. Louis Intl. Airport (STL)?
Typically, you can cancel or reschedule your PRG to STL flight. However, additional charges may apply, especially if you booked more than 24 hours ago. Double-check your itinerary for the airline’s guidelines and fees on flight changes, or if you want more information, visit our Customer Service portal.

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*Available to One Key members.