$439 Cheap Flights from St. Louis (STL) to Budapest (BUD)

View $439 flight on Tue, Dec 9, 2025Opens in a new window

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Ferenc Liszt Intl. Airport (BUD)

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Cheap Flights from St. Louis to Budapest (STL-BUD)

Prices were available within the past 7 days and start at $439 for one-way flights and $533 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Scandinavian Airlines
Sat, Apr 18 - Thu, Apr 30
STL
St. Louis
BUD
Budapest
$533 Roundtrip, found 1 day ago
$533
Roundtrip
found 1 day ago
Select Scandinavian Airlines flight, departing Sat, Apr 18 from St. Louis to Budapest, returning Thu, Apr 30, priced at $533 found 1 day ago
United
Mon, Dec 8 - Wed, Dec 24
STL
St. Louis
BUD
Budapest
$553 Roundtrip, found 1 day ago
$553
Roundtrip
found 1 day ago
Select United flight, departing Mon, Dec 8 from St. Louis to Budapest, returning Wed, Dec 24, priced at $553 found 1 day ago
Lufthansa
Sat, Jan 17 - Sun, Jan 25
STL
St. Louis
BUD
Budapest
$555 Roundtrip, found 4 days ago
$555
Roundtrip
found 4 days ago
Select Lufthansa flight, departing Sat, Jan 17 from St. Louis to Budapest, returning Sun, Jan 25, priced at $555 found 4 days ago
Air Canada
Sat, Dec 6 - Wed, Dec 24
STL
St. Louis
BUD
Budapest
$557 Roundtrip, found 4 days ago
$557
Roundtrip
found 4 days ago
Select Air Canada flight, departing Sat, Dec 6 from St. Louis to Budapest, returning Wed, Dec 24, priced at $557 found 4 days ago
Lufthansa
Sun, Jan 11 - Fri, Jan 23
STL
St. Louis
BUD
Budapest
$560 Roundtrip, found 12 hours ago
$560
Roundtrip
found 12 hours ago
Select Lufthansa flight, departing Sun, Jan 11 from St. Louis to Budapest, returning Fri, Jan 23, priced at $560 found 12 hours ago
Lufthansa
Sun, Jan 11 - Fri, Jan 23
STL
St. Louis
BUD
Budapest
$561 Roundtrip, found 12 hours ago
$561
Roundtrip
found 12 hours ago
Select Lufthansa flight, departing Sun, Jan 11 from St. Louis to Budapest, returning Fri, Jan 23, priced at $561 found 12 hours ago
Lufthansa
Sat, Jan 17 - Sun, Jan 25
STL
St. Louis
BUD
Budapest
$562 Roundtrip, found 4 days ago
$562
Roundtrip
found 4 days ago
Select Lufthansa flight, departing Sat, Jan 17 from St. Louis to Budapest, returning Sun, Jan 25, priced at $562 found 4 days ago
Air Canada
Wed, Feb 4 - Tue, Feb 17
STL
St. Louis
BUD
Budapest
$564 Roundtrip, found 2 days ago
$564
Roundtrip
found 2 days ago
Select Air Canada flight, departing Wed, Feb 4 from St. Louis to Budapest, returning Tue, Feb 17, priced at $564 found 2 days ago
United
Thu, Jan 29 - Fri, Feb 6
STL
St. Louis
BUD
Budapest
$564 Roundtrip, found 3 days ago
$564
Roundtrip
found 3 days ago
Select United flight, departing Thu, Jan 29 from St. Louis to Budapest, returning Fri, Feb 6, priced at $564 found 3 days ago
Delta
Thu, Jan 29 - Fri, Feb 6
STL
St. Louis
BUD
Budapest
$564 Roundtrip, found 3 days ago
$564
Roundtrip
found 3 days ago
Select Delta flight, departing Thu, Jan 29 from St. Louis to Budapest, returning Fri, Feb 6, priced at $564 found 3 days ago

Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Ferenc Liszt Intl. Airport (BUD) cost?
Lock in a cheap one-way flight from $439 or cheap return flight from $533 from Lambert-St. Louis Intl. Airport (STL) to Ferenc Liszt Intl. Airport (BUD) 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 Ferenc Liszt Intl. Airport (BUD)?
The cheapest month to fly from STL to BUD is April, when demand is low. Off-peak season is usually when you'll find lower airfares between these airports.
What is the cheapest airline that flies from Lambert-St. Louis Intl. Airport (STL) to Ferenc Liszt Intl. Airport (BUD)?
Use the filters on Expedia to compare different airlines and find the cheapest carrier that'll fly you from STL to BUD. Then, sort your results by "Price (lowest to highest)" to snap up a good deal.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Ferenc Liszt Intl. Airport (BUD)?
There aren't any daily nonstop flights from Lambert-St. Louis Intl. Airport (STL) to Ferenc Liszt Intl. Airport (BUD). But you can book flights with layovers. Filter your search on Expedia to include one or more stops, and you'll be soaring above the clouds before you know it.
What day of the week has the most flights from STL to BUD?
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 Lambert-St. Louis Intl. Airport (STL) to Ferenc Liszt Intl. Airport (BUD)?
Book a flight from Lambert-St. Louis Intl. Airport (STL) to Ferenc Liszt Intl. Airport (BUD) that leaves before 3 PM to reduce the risk of cancellations. Later departures 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 Lambert-St. Louis Intl. Airport (STL) to Ferenc Liszt Intl. Airport (BUD) last-minute?
Holding off until just before your departure to book a ticket from STL to BUD often results in higher prices. While it's possible to find some last-minute discounts, they're not always guaranteed. Be flexible with your travel plans to maximize your chances of landing a bargain.
Is it cheaper to book a STL to BUD flight and hotel package?
Securing a STL to BUD flight and hotel package is generally cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip all in one place. Pick from our extensive range of accommodations and then add car rentals, activities and flights to your booking. Bundle it all 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 Ferenc Liszt Intl. Airport (BUD)?
Typically, it's possible to reschedule or cancel your STL to BUD flight. However, if it's been more than 24 hours since booking, additional fees may apply. Check your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find more information on our Customer Service portal.

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
Ferenc Liszt Intl.
Airlines serving
Aer Lingus, Air Canada, Air France, American Airlines, Austrian Airlines, British Airways, Brussels Airlines, Delta, Finnair, Iberia, KLM, Lufthansa, Scandinavian Airlines, Turkish Airlines, United
Roundtrip price
$533
Distance
5079 mi

Book with confidence

St. Louis to Budapest Flights

The cheapest times to fly from St. Louis to Budapest

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

 

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

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

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 Budapest in 2025. You can also book with separate airlines for your outbound and return journeys, from $439 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 Budapest 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 Budapest 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 Budapest Flights

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*Available to One Key members.