What is the cheapest airline that flies from Lambert-St Louis to Budapest Ferenc Liszt Intl?

British Airways, United Airlines, and Lufthansa are the most popular carriers operating from Lambert-St Louis to Budapest Ferenc Liszt Intl

Which layover airport offers the lowest fares from St. Louis to Budapest?

Flights via London (LHR) offer the lowest average round-trip price of $886.

Which layover airport has the shortest connection time from St. Louis to Budapest?

Philadelphia (PHL) has the shortest average layover time for this route: 2h 13m.

What airlines fly to Budapest?

Lufthansa, United Airlines and British Airways are the top three most popular airlines that fly to Budapest from St. Louis according to our data. Lufthansa is the first choice among our users, with 51% of people opting to fly with this airline when traveling to Budapest. Keep in mind that there are 3 different airlines that fly to Budapest on a routine basis, so you have a few additional options to choose from.

Which airport is the most popular layover for flights between St. Louis and Budapest?

Frankfurt am Main (FRA) was the most common stop: 91% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport has the shortest travel time from St. Louis to Budapest?

Flights connecting via London (LHR) have the shortest average one-way travel time: 12h 15m.

When did momondo last update prices for flights from Lambert-St Louis Airport to Budapest Ferenc Liszt Intl Airport?

Prices for flights from Lambert-St Louis Airport to Budapest Ferenc Liszt Intl Airport are refreshed on a daily basis.

How many operators does momondo search for flights from Lambert-St Louis Airport to Budapest Ferenc Liszt Intl Airport?

As of November 2026, there are 3 operators available to choose from for flights from Lambert-St Louis Airport to Budapest Ferenc Liszt Intl Airport.

How old do you have to be to fly from Lambert-St Louis Airport to Budapest Ferenc Liszt Intl Airport?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Lambert-St Louis Airport to Budapest Ferenc Liszt Intl Airport.

What documentation or ID do you need to fly to Budapest Ferenc Liszt Intl Airport?

The travel and health documents required for your trip to Budapest Ferenc Liszt Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Budapest Ferenc Liszt Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$384 Cheap Flights from St. Louis to Budapest in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Budapest

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

1:00 pm - 4:25 pmSTL Lambert-St Louis-BUD Budapest Ferenc Liszt Intl

21h 25m2 stops Washington, D.C. Dulles Intl Munich Franz Josef Strauss

5:55 am - 1:25 pmBUD Budapest Ferenc Liszt Intl-STL Lambert-St Louis

14h 30m1 stop Frankfurt am Main

$740Lufthansa

Tue, Mar 23 - Tue, Apr 6

9:05 am - 2:05 pmSTL Lambert-St Louis-BUD Budapest Ferenc Liszt Intl

22h 00m2 stops Chicago O'Hare Intl Zurich

6:40 am - 1:45 pmBUD Budapest Ferenc Liszt Intl-STL Lambert-St Louis

14h 05m1 stop Frankfurt am Main

$746United Airlines

Wed, Feb 3 - Fri, Feb 5

10:23 am - 2:00 pmSTL Lambert-St Louis-BUD Budapest Ferenc Liszt Intl

20h 37m2 stops Chicago O'Hare Intl Zurich

5:55 am - 1:25 pmBUD Budapest Ferenc Liszt Intl-STL Lambert-St Louis

14h 30m1 stop Frankfurt am Main

$746United Airlines

Sun, Apr 25 - Thu, Apr 29

9:40 pm - 1:10 amSTL Lambert-St Louis-BUD Budapest Ferenc Liszt Intl

20h 30m1 stop London Heathrow

12:05 pm - 10:17 pmBUD Budapest Ferenc Liszt Intl-STL Lambert-St Louis

17h 12m2 stops Helsinki-Vantaa Chicago O'Hare Intl

$746Multiple Airlines

Sun, Apr 25 - Thu, Apr 29

9:23 am - 2:00 pmSTL Lambert-St Louis-BUD Budapest Ferenc Liszt Intl

21h 37m2 stops Chicago O'Hare Intl Zurich

5:55 am - 1:25 pmBUD Budapest Ferenc Liszt Intl-STL Lambert-St Louis

14h 30m1 stop Frankfurt am Main

$746United Airlines

Sun, Apr 25 - Thu, Apr 29

9:40 pm - 10:50 amSTL Lambert-St Louis-BUD Budapest Ferenc Liszt Intl

30h 10m1 stop London Heathrow

11:40 am - 7:30 pmBUD Budapest Ferenc Liszt Intl-STL Lambert-St Louis

14h 50m1 stop London Heathrow

$750British Airways

Sun, Apr 25 - Thu, Apr 29

3:30 pm - 6:00 pmSTL Lambert-St Louis-BUD Budapest Ferenc Liszt Intl

19h 30m1 stop Frankfurt am Main

5:55 am - 1:25 pmBUD Budapest Ferenc Liszt Intl-STL Lambert-St Louis

14h 30m1 stop Frankfurt am Main

$750Lufthansa

Sun, Apr 25 - Thu, Apr 29

9:40 pm - 10:50 amSTL Lambert-St Louis-BUD Budapest Ferenc Liszt Intl

30h 10m1 stop London Heathrow

11:40 am - 7:30 pmBUD Budapest Ferenc Liszt Intl-STL Lambert-St Louis

14h 50m1 stop London Heathrow

$751British Airways

Sun, Apr 25 - Thu, Apr 29

3:30 pm - 6:00 pmSTL Lambert-St Louis-BUD Budapest Ferenc Liszt Intl

19h 30m1 stop Frankfurt am Main

5:55 am - 1:25 pmBUD Budapest Ferenc Liszt Intl-STL Lambert-St Louis

14h 30m1 stop Frankfurt am Main

$751Lufthansa

Sun, Apr 25 - Thu, Apr 29

7:00 am - 2:05 pmSTL Lambert-St Louis-BUD Budapest Ferenc Liszt Intl

25h 05m2 stops Chicago O'Hare Intl Zurich

5:55 am - 3:26 pmBUD Budapest Ferenc Liszt Intl-STL Lambert-St Louis

16h 31m2 stops Frankfurt am Main Toronto Pearson Intl

$753Multiple Airlines

Tue, Mar 23 - Tue, Apr 6

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British Airways flights from St. Louis to Budapest

Our best British Airways deals on St. Louis to Budapest flight tickets

British Airways

Apr 25

STL9:40 pmLambert-St Louis

30h 10m

1 stop

BUD10:50 amBudapest Ferenc Liszt Intl

Apr 29

BUD11:40 amBudapest Ferenc Liszt Intl

14h 50m

1 stop

STL7:30 pmLambert-St Louis

$750

British Airways

Apr 25

STL9:40 pmLambert-St Louis

30h 10m

1 stop

BUD10:50 amBudapest Ferenc Liszt Intl

Apr 29

BUD11:40 amBudapest Ferenc Liszt Intl

14h 50m

1 stop

STL7:30 pmLambert-St Louis

$751

British Airways

Nov 30

STL5:29 pmLambert-St Louis

22h 51m

2 stops

BUD11:20 pmBudapest Ferenc Liszt Intl

Dec 14

BUD5:35 pmBudapest Ferenc Liszt Intl

31h 11m

2 stops

STL5:46 pmLambert-St Louis

$1,970

United Airlines flights from St. Louis to Budapest

Our best United Airlines deals on St. Louis to Budapest flight tickets

United Airlines

Apr 25

STL10:23 amLambert-St Louis

20h 37m

2 stops

BUD2:00 pmBudapest Ferenc Liszt Intl

Apr 29

BUD5:55 amBudapest Ferenc Liszt Intl

14h 30m

1 stop

STL1:25 pmLambert-St Louis

$746

United Airlines

Feb 3

STL9:05 amLambert-St Louis

22h 00m

2 stops

BUD2:05 pmBudapest Ferenc Liszt Intl

Feb 5

BUD6:40 amBudapest Ferenc Liszt Intl

40h 39m

3 stops

STL4:19 pmLambert-St Louis

$753

United Airlines

Feb 3

STL9:05 amLambert-St Louis

22h 00m

2 stops

BUD2:05 pmBudapest Ferenc Liszt Intl

Feb 5

BUD6:40 amBudapest Ferenc Liszt Intl

19h 47m

2 stops

STL7:27 pmLambert-St Louis

$755

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisBudapest

STL Lambert-St Louis - BUD Budapest Ferenc Liszt Intl

STLBUD

Lambert-St Louis

Tue 3/23

1:00 pm-4:25 pm

2 stops21h 25m

Budapest Ferenc Liszt Intl

Tue 4/6

5:55 am-1:25 pm

1 stop14h 30m

$740

St. LouisBudapest

STL Lambert-St Louis - BUD Budapest Ferenc Liszt Intl

STLBUD

Lambert-St Louis

Wed 2/3

9:05 am-2:05 pm

2 stops22h 00m

Budapest Ferenc Liszt Intl

Fri 2/5

6:40 am-1:45 pm

1 stop14h 05m

$746

St. LouisBudapest

STL Lambert-St Louis - BUD Budapest Ferenc Liszt Intl

STLBUD

Lambert-St Louis

Sun 4/25

10:23 am-2:00 pm

2 stops20h 37m

Budapest Ferenc Liszt Intl

Thu 4/29

5:55 am-1:25 pm

1 stop14h 30m

$746

St. LouisBudapest

STL Lambert-St Louis - BUD Budapest Ferenc Liszt Intl

STLBUD

Lambert-St Louis

Sun 4/25

9:40 pm-1:10 am

1 stop20h 30m

Budapest Ferenc Liszt Intl

Thu 4/29

12:05 pm-10:17 pm

2 stops17h 12m

$746

St. LouisBudapest

STL Lambert-St Louis - BUD Budapest Ferenc Liszt Intl

STLBUD

Lambert-St Louis

Sun 4/25

9:23 am-2:00 pm

2 stops21h 37m

Budapest Ferenc Liszt Intl

Thu 4/29

5:55 am-1:25 pm

1 stop14h 30m

$746

St. LouisBudapest

STL Lambert-St Louis - BUD Budapest Ferenc Liszt Intl

STLBUD

Lambert-St Louis

Sun 4/25

9:40 pm-10:50 am

1 stop30h 10m

Budapest Ferenc Liszt Intl

Thu 4/29

11:40 am-7:30 pm

1 stop14h 50m

$750

Quickest round-trip

St. LouisBudapest

STL Lambert-St Louis - BUD Budapest Ferenc Liszt Intl

STLBUD

Lambert-St Louis

Sun 4/25

3:30 pm-6:00 pm

1 stop19h 30m

Budapest Ferenc Liszt Intl

Thu 4/29

5:55 am-1:25 pm

1 stop14h 30m

$750

St. LouisBudapest

STL Lambert-St Louis - BUD Budapest Ferenc Liszt Intl

STLBUD

Lambert-St Louis

Sun 4/25

9:40 pm-10:50 am

1 stop30h 10m

Budapest Ferenc Liszt Intl

Thu 4/29

11:40 am-7:30 pm

1 stop14h 50m

$751

St. LouisBudapest

STL Lambert-St Louis - BUD Budapest Ferenc Liszt Intl

STLBUD

Lambert-St Louis

Sun 4/25

3:30 pm-6:00 pm

1 stop19h 30m

Budapest Ferenc Liszt Intl

Thu 4/29

5:55 am-1:25 pm

1 stop14h 30m

$751

St. LouisBudapest

STL Lambert-St Louis - BUD Budapest Ferenc Liszt Intl

STLBUD

Lambert-St Louis

Tue 3/23

7:00 am-2:05 pm

2 stops25h 05m

Budapest Ferenc Liszt Intl

Tue 4/6

5:55 am-3:26 pm

2 stops16h 31m

$753

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 resultsSorted by cheapest first

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

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

Prices

Airlines

Layovers

What is the cheapest month to fly to Budapest?

The cheapest month to fly to Budapest from St. Louis is in October. Flight prices, which tend to average around $0, are often lower during this time because this is during the off-season. The month of April is another great option to travel to Budapest, with average flight prices from St. Louis averaging around $714.

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

You could potentially save up to 14% on your flight if you consider stops on a St. Louis to Budapest flight.

When to book flights from St. Louis to Budapest

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

Estimated round-trip price

Cheap St. Louis to Budapest (STL to BUD) flight deals and tips

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

Best Price Found	$384
Fastest flight time	20h 37m
Direct flights	None

The best one-way flight to Budapest from St. Louis in the past 72 hours is $384. The best round-trip flight deal from St. Louis to Budapest found on momondo in the last 72 hours is $740.

The fastest flight from St. Louis to Budapest takes 20h 37m

There are no direct flights from St. Louis to Budapest. There are no popular flight routes from St. Louis to Budapest.

Search flight deals

Frequently asked questions about flying from St. Louis to Budapest

How far is Lambert-St Louis to Budapest Ferenc Liszt Intl by plane?
The straight-line distance from Lambert-St Louis to Budapest Ferenc Liszt Intl is 5065.8 mi. A reasonable flight in good conditions will take 20h 37m.
When did momondo last update prices for flights from Lambert-St Louis Airport to Budapest Ferenc Liszt Intl Airport?
Prices for flights from Lambert-St Louis Airport to Budapest Ferenc Liszt Intl Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Lambert-St Louis Airport to Budapest Ferenc Liszt Intl Airport?
As of November 2026, there are 3 operators available to choose from for flights from Lambert-St Louis Airport to Budapest Ferenc Liszt Intl Airport.
How old do you have to be to fly from Lambert-St Louis Airport to Budapest Ferenc Liszt Intl Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Lambert-St Louis Airport to Budapest Ferenc Liszt Intl Airport.
What documentation or ID do you need to fly to Budapest Ferenc Liszt Intl Airport?
The travel and health documents required for your trip to Budapest Ferenc Liszt Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Budapest Ferenc Liszt Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular airline from St. Louis to Budapest?
Based on momondo bookings for flights between St. Louis and Budapest, the leading airline is Lufthansa, making up 51% of the total bookings. Other popular airlines include United Airlines with 28% and British Airways with 22%.

Best airlines flying from St. Louis to Budapest

Compare and see reviews for airlines that fly from St. Louis to Budapest with momondo

Airline	Rating	Free Cancellation	Price
Lufthansa	PriceFrom $468	Free Cancellation	Rating 6.8 8,299 reviews	Search Lufthansa flights
United Airlines	PriceFrom $578	Free Cancellation	Rating 7.3 10,460 reviews	Search United Airlines flights
British Airways	PriceFrom $825	Free Cancellation	Rating 6.7 8,280 reviews	Search British Airways flights

Siófok

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Eger

Kecskemét

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Budapest from St. Louis.

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

Yes. momondo allows you to filter the results for St. Louis to Budapest flights to just show those with flexible booking policies.

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

Once you have performed a search for St. Louis to Budapest 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 Budapest right now. Can momondo alert me if prices change?

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

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Cheap flights from St. Louis to Budapest from $384

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 Budapest departing on 3/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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British Airways flights from St. Louis to Budapest

Our best British Airways deals on St. Louis to Budapest flight tickets

United Airlines flights from St. Louis to Budapest

Our best United Airlines deals on St. Louis to Budapest flight tickets

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See travel insights to Budapest from

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

What is the cheapest month to fly to Budapest?

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

What is the cheapest airline that flies from Lambert-St Louis to Budapest Ferenc Liszt Intl?

What airlines fly to Budapest?

Which airport is the most popular layover for flights between St. Louis and Budapest?

Which layover airport offers the lowest fares from St. Louis to Budapest?

Which layover airport has the shortest travel time from St. Louis to Budapest?

Which layover airport has the shortest connection time from St. Louis to Budapest?

When to book flights from St. Louis to Budapest

Cheap St. Louis to Budapest (STL to BUD) flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from St. Louis to Budapest

Best airlines flying from St. Louis to Budapest

Compare and see reviews for airlines that fly from St. Louis to Budapest with momondo

Traveling to a place near Budapest?

Why use momondo?

An easier way to manage your Budapest 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.

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Find better results for your trip to Hungary

Airports servicing Hungary

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List of cabin classes available on flights landing in Budapest. Availability may vary depending on flight origin and airline.

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