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Cheap flights from St. Louis to Budapest from $542

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 3/20. 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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0 bags

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Find the cheapest flights from St. Louis to Budapest

Cheap round-trip flights

Enter your travel dates to find the best prices.
Lufthansa Logo
3:50 pm - 11:35 amSTL-BUD
12h 45m1 stop
Lufthansa Logo
10:05 am - 11:59 pmBUD-STL
20h 54m2 stops
$710Lufthansa
Find Deal
Sun, Jan 4 - Tue, Jan 13
Multiple Airlines Logo
3:50 pm - 9:10 pmSTL-BUD
22h 20m2 stops
Multiple Airlines Logo
2:55 pm - 3:29 pmBUD-STL
55h 34m2 stops
$738Multiple Airlines
Find Deal
Sun, Jan 4 - Tue, Jan 13
United Airlines Logo
3:50 pm - 1:35 pmSTL-BUD
14h 45m1 stop
United Airlines Logo
10:05 am - 1:55 pmBUD-STL
34h 50m1 stop
$745United Airlines
Find Deal
Sun, Jan 4 - Tue, Jan 13
Lufthansa Logo
6:43 pm - 11:15 pmSTL-BUD
21h 32m2 stops
Lufthansa Logo
6:20 am - 11:42 pmBUD-STL
24h 22m2 stops
$753Lufthansa
Find Deal
Wed, Nov 26 - Thu, Dec 11
Lufthansa Logo
3:50 pm - 5:45 pmSTL-BUD
18h 55m1 stop
Lufthansa Logo
1:20 pm - 11:42 pmBUD-STL
17h 22m2 stops
$770Lufthansa
Find Deal
Wed, Nov 26 - Thu, Dec 11
Lufthansa Logo
3:50 pm - 11:35 amSTL-BUD
12h 45m1 stop
Lufthansa Logo
6:35 pm - 1:55 pmBUD-STL
26h 20m1 stop
$799Lufthansa
Find Deal
Wed, Nov 26 - Thu, Dec 11
United Airlines Logo
4:05 pm - 9:10 pmSTL-BUD
23h 05m2 stops
United Airlines Logo
9:25 am - 9:03 pmBUD-STL
18h 38m2 stops
$816United Airlines
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Fri, Mar 27 - Tue, Mar 31
United Airlines Logo
4:50 pm - 11:35 amSTL-BUD
12h 45m1 stop
United Airlines Logo
5:55 am - 2:27 pmBUD-STL
15h 32m2 stops
$822United Airlines
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Fri, Mar 27 - Tue, Mar 31
United Airlines Logo
4:50 pm - 4:15 pmSTL-BUD
17h 25m2 stops
United Airlines Logo
9:25 am - 7:26 pmBUD-STL
17h 01m2 stops
$846United Airlines
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Fri, Mar 27 - Tue, Mar 31
Air Canada Logo
4:05 pm - 5:45 pmSTL-BUD
18h 40m2 stops
Air Canada Logo
10:05 am - 10:45 pmBUD-STL
19h 40m3 stops
$967Air Canada
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Wed, Nov 26 - Thu, Dec 11

Lufthansa flights from St. Louis to Budapest

Our best Lufthansa deals on St. Louis to Budapest flight tickets
Lufthansa
Jan 4
STL3:50 pmLambert-St Louis
12h 45m
1 stop
BUD11:35 amBudapest Ferenc Liszt Intl
Jan 13
BUD10:05 amBudapest Ferenc Liszt Intl
20h 54m
2 stops
STL11:59 pmLambert-St Louis
$710
Find similar
Lufthansa
Nov 26
STL6:43 pmLambert-St Louis
21h 32m
2 stops
BUD11:15 pmBudapest Ferenc Liszt Intl
Dec 11
BUD6:20 amBudapest Ferenc Liszt Intl
24h 22m
2 stops
STL11:42 pmLambert-St Louis
$753
Find similar
Lufthansa
Nov 26
STL3:50 pmLambert-St Louis
18h 55m
1 stop
BUD5:45 pmBudapest Ferenc Liszt Intl
Dec 11
BUD1:20 pmBudapest Ferenc Liszt Intl
17h 22m
2 stops
STL11:42 pmLambert-St Louis
$770
Find similar

United Airlines flights from St. Louis to Budapest

Our best United Airlines deals on St. Louis to Budapest flight tickets
United Airlines
Jan 4
STL3:50 pmLambert-St Louis
14h 45m
1 stop
BUD1:35 pmBudapest Ferenc Liszt Intl
Jan 13
BUD10:05 amBudapest Ferenc Liszt Intl
34h 50m
1 stop
STL1:55 pmLambert-St Louis
$745
Find similar
United Airlines
Mar 27
STL4:05 pmLambert-St Louis
23h 05m
2 stops
BUD9:10 pmBudapest Ferenc Liszt Intl
Mar 31
BUD9:25 amBudapest Ferenc Liszt Intl
18h 38m
2 stops
STL9:03 pmLambert-St Louis
$816
Find similar
United Airlines
Mar 27
STL4:50 pmLambert-St Louis
12h 45m
1 stop
BUD11:35 amBudapest Ferenc Liszt Intl
Mar 31
BUD5:55 amBudapest Ferenc Liszt Intl
15h 32m
2 stops
STL2:27 pmLambert-St Louis
$822
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Budapest that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated November 13, 2025.
Use the filters below to find and compare flights from St. Louis to Budapest that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisBudapest

STL - BUD

STLBUD

Lambert-St Louis

Sun 1/4

3:50 pm-11:35 am

1 stop12h 45m

Budapest Ferenc Liszt Intl

Tue 1/13

10:05 am-11:59 pm

2 stops20h 54m

$710

St. LouisBudapest

STL - BUD

STLBUD

Lambert-St Louis

Sun 1/4

3:50 pm-9:10 pm

2 stops22h 20m

Budapest Ferenc Liszt Intl

Tue 1/13

2:55 pm-3:29 pm

2 stops55h 34m

$738

St. LouisBudapest

STL - BUD

STLBUD

Lambert-St Louis

Sun 1/4

3:50 pm-1:35 pm

1 stop14h 45m

Budapest Ferenc Liszt Intl

Tue 1/13

10:05 am-1:55 pm

1 stop34h 50m

$745

St. LouisBudapest

STL - BUD

STLBUD

Lambert-St Louis

Wed 11/26

6:43 pm-11:15 pm

2 stops21h 32m

Budapest Ferenc Liszt Intl

Thu 12/11

6:20 am-11:42 pm

2 stops24h 22m

$753

St. LouisBudapest

STL - BUD

STLBUD

Lambert-St Louis

Wed 11/26

3:50 pm-5:45 pm

1 stop18h 55m

Budapest Ferenc Liszt Intl

Thu 12/11

1:20 pm-11:42 pm

2 stops17h 22m

$770

St. LouisBudapest

STL - BUD

STLBUD

Lambert-St Louis

Wed 11/26

3:50 pm-11:35 am

1 stop12h 45m

Budapest Ferenc Liszt Intl

Thu 12/11

6:35 pm-1:55 pm

1 stop26h 20m

$799

St. LouisBudapest

STL - BUD

STLBUD

Lambert-St Louis

Fri 3/27

4:05 pm-9:10 pm

2 stops23h 05m

Budapest Ferenc Liszt Intl

Tue 3/31

9:25 am-9:03 pm

2 stops18h 38m

$816

St. LouisBudapest

STL - BUD

STLBUD

Lambert-St Louis

Fri 3/27

4:50 pm-11:35 am

1 stop12h 45m

Budapest Ferenc Liszt Intl

Tue 3/31

5:55 am-2:27 pm

2 stops15h 32m

$822

St. LouisBudapest

STL - BUD

STLBUD

Lambert-St Louis

Fri 3/27

4:50 pm-4:15 pm

2 stops17h 25m

Budapest Ferenc Liszt Intl

Tue 3/31

9:25 am-7:26 pm

2 stops17h 01m

$846

St. LouisBudapest

STL - BUD

STLBUD

Lambert-St Louis

Wed 11/26

4:05 pm-5:45 pm

2 stops18h 40m

Budapest Ferenc Liszt Intl

Thu 12/11

10:05 am-10:45 pm

3 stops19h 40m

$967

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 resultsSorted by cheapest first
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See travel insights to Budapest from

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

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 $616, are often lower during this time because this is during the off-season. The month of November is another great option to travel to Budapest, with average flight prices from St. Louis averaging around $712.

What is the cheapest day to depart on your flight to Budapest?

The cheapest day to depart on your flight to Budapest is on a Monday when prices can be found for as low as $987. This is often the case because there is less demand to fly during this day of the week. Flights from St. Louis to Budapest on a Sunday will generally be more expensive and average around $1,139. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Budapest?

In the evening is the cheapest time of day to fly from St. Louis to Budapest when you can find flight prices for as low as $917. Flying to Budapest in the evening is an ideal time because this is during off-peak travel hours. Flights at noon are often more expensive with an average ticket price of $1,098.

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

You could potentially save up to 19% 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

Direct flights

None
There are no direct flights from St. Louis to Budapest. There are no popular flight routes from St. Louis to Budapest.
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  • 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 12h 45m.

  • 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?

  • 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?

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
LufthansaPriceFrom $517Free CancellationRating
6.8
7,572 reviews
Search Lufthansa flights
United AirlinesPriceFrom $578Free CancellationRating
7.4
9,017 reviews
Search United Airlines flights

Traveling to a place near Budapest?

Book flights to Budapest if you plan to visit one of these locations
Siófok
Szeged
Eger
Kecskemét
Szentendre

Why use momondo?

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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Find better results for your trip to Hungary

Airports servicing Hungary

Debrecen Airport
Miskolc Airport