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Cheap flights from St. Louis to Budapest from $439

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.
1 adult
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 - 1:50 pm
STL
-
BUD
15h 00m1 stop
Lufthansa Logo
10:10 am - 11:59 pm
BUD
-
STL
20h 49m2 stops
$514Lufthansa
Fri, Jan 16 - Fri, Jan 23
Lufthansa Logo
3:50 pm - 11:35 am
STL
-
BUD
12h 45m1 stop
Lufthansa Logo
6:25 am - 1:55 pm
BUD
-
STL
14h 30m1 stop
$523Lufthansa
Fri, Jan 16 - Fri, Jan 23
British Airways Logo
6:00 am - 11:05 pm
STL
-
BUD
34h 05m2 stops
British Airways Logo
7:15 am - 9:15 pm
BUD
-
STL
21h 00m2 stops
$553British Airways
Thu, Jan 22 - Thu, Jan 29
United Airlines Logo
9:57 am - 9:10 pm
STL
-
BUD
28h 13m2 stops
United Airlines Logo
6:05 am - 3:29 pm
BUD
-
STL
40h 24m2 stops
$563United Airlines
Fri, Jan 23 - Tue, Jan 27
Multiple Airlines Logo
4:05 pm - 10:45 pm
STL
-
BUD
23h 40m2 stops
Multiple Airlines Logo
2:25 pm - 1:55 pm
BUD
-
STL
30h 30m1 stop
$564Multiple Airlines
Thu, Jan 22 - Thu, Jan 29
Air Canada Logo
4:05 pm - 2:05 pm
STL
-
BUD
15h 00m2 stops
Air Canada Logo
6:05 am - 3:29 pm
BUD
-
STL
40h 24m2 stops
$566Air Canada
Fri, Jan 23 - Tue, Jan 27
United Airlines Logo
3:50 pm - 1:50 pm
STL
-
BUD
15h 00m1 stop
United Airlines Logo
6:05 am - 3:29 pm
BUD
-
STL
40h 24m2 stops
$571United Airlines
Fri, Jan 23 - Tue, Jan 27
United Airlines Logo
3:50 pm - 1:50 pm
STL
-
BUD
15h 00m1 stop
United Airlines Logo
6:05 am - 10:58 pm
BUD
-
STL
23h 53m2 stops
$574United Airlines
Fri, Jan 23 - Tue, Jan 27
Multiple Airlines Logo
5:59 pm - 1:20 pm
STL
-
BUD
13h 21m2 stops
Multiple Airlines Logo
1:55 pm - 8:52 am
BUD
-
STL
24h 57m2 stops
$647Multiple Airlines
Wed, Mar 18 - Mon, Mar 23
Multiple Airlines Logo
4:05 pm - 11:40 pm
STL
-
BUD
24h 35m3 stops
Multiple Airlines Logo
5:20 pm - 1:55 pm
BUD
-
STL
27h 35m2 stops
$649Multiple Airlines
Thu, Jan 22 - Thu, Jan 29

Air Canada flights from St. Louis to Budapest

Our best Air Canada deals on St. Louis to Budapest flight tickets
Air Canada
Jan 23
STL4:05 pmLambert-St Louis
15h 00m
2 stops
BUD2:05 pmBudapest Ferenc Liszt Intl
Jan 27
BUD6:05 amBudapest Ferenc Liszt Intl
40h 24m
2 stops
STL3:29 pmLambert-St Louis
$566
Find similar
Air Canada
Apr 11
STL4:05 pmLambert-St Louis
43h 15m
2 stops
BUD6:20 pmBudapest Ferenc Liszt Intl
Apr 22
BUD9:25 amBudapest Ferenc Liszt Intl
36h 59m
2 stops
STL3:24 pmLambert-St Louis
$727
Find similar
Air Canada
Apr 15
STL4:05 pmLambert-St Louis
19h 15m
2 stops
BUD6:20 pmBudapest Ferenc Liszt Intl
Apr 20
BUD2:15 pmBudapest Ferenc Liszt Intl
56h 09m
2 stops
STL3:24 pmLambert-St Louis
$748
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 23
STL9:57 amLambert-St Louis
28h 13m
2 stops
BUD9:10 pmBudapest Ferenc Liszt Intl
Jan 27
BUD6:05 amBudapest Ferenc Liszt Intl
40h 24m
2 stops
STL3:29 pmLambert-St Louis
$563
Find similar
United Airlines
Jan 23
STL3:50 pmLambert-St Louis
15h 00m
1 stop
BUD1:50 pmBudapest Ferenc Liszt Intl
Jan 27
BUD6:05 amBudapest Ferenc Liszt Intl
40h 24m
2 stops
STL3:29 pmLambert-St Louis
$571
Find similar
United Airlines
Jan 23
STL3:50 pmLambert-St Louis
15h 00m
1 stop
BUD1:50 pmBudapest Ferenc Liszt Intl
Jan 27
BUD6:05 amBudapest Ferenc Liszt Intl
23h 53m
2 stops
STL10:58 pmLambert-St Louis
$574
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 December 10, 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

Fri 1/16

3:50 pm-1:50 pm

1 stop15h 00m

Budapest Ferenc Liszt Intl

Fri 1/23

10:10 am-11:59 pm

2 stops20h 49m

$514

St. LouisBudapest

STL - BUD

STLBUD

Lambert-St Louis

Fri 1/16

3:50 pm-11:35 am

1 stop12h 45m

Budapest Ferenc Liszt Intl

Fri 1/23

6:25 am-1:55 pm

1 stop14h 30m

$523

St. LouisBudapest

STL - BUD

STLBUD

Lambert-St Louis

Thu 1/22

6:00 am-11:05 pm

2 stops34h 05m

Budapest Ferenc Liszt Intl

Thu 1/29

7:15 am-9:15 pm

2 stops21h 00m

$553

St. LouisBudapest

STL - BUD

STLBUD

Lambert-St Louis

Fri 1/23

9:57 am-9:10 pm

2 stops28h 13m

Budapest Ferenc Liszt Intl

Tue 1/27

6:05 am-3:29 pm

2 stops40h 24m

$563

St. LouisBudapest

STL - BUD

STLBUD

Lambert-St Louis

Thu 1/22

4:05 pm-10:45 pm

2 stops23h 40m

Budapest Ferenc Liszt Intl

Thu 1/29

2:25 pm-1:55 pm

1 stop30h 30m

$564

St. LouisBudapest

STL - BUD

STLBUD

Lambert-St Louis

Fri 1/23

4:05 pm-2:05 pm

2 stops15h 00m

Budapest Ferenc Liszt Intl

Tue 1/27

6:05 am-3:29 pm

2 stops40h 24m

$566

St. LouisBudapest

STL - BUD

STLBUD

Lambert-St Louis

Fri 1/23

3:50 pm-1:50 pm

1 stop15h 00m

Budapest Ferenc Liszt Intl

Tue 1/27

6:05 am-3:29 pm

2 stops40h 24m

$571

St. LouisBudapest

STL - BUD

STLBUD

Lambert-St Louis

Fri 1/23

3:50 pm-1:50 pm

1 stop15h 00m

Budapest Ferenc Liszt Intl

Tue 1/27

6:05 am-10:58 pm

2 stops23h 53m

$574

St. LouisBudapest

STL - BUD

STLBUD

Lambert-St Louis

Wed 3/18

5:59 pm-1:20 pm

2 stops13h 21m

Budapest Ferenc Liszt Intl

Mon 3/23

1:55 pm-8:52 am

2 stops24h 57m

$647

St. LouisBudapest

STL - BUD

STLBUD

Lambert-St Louis

Thu 1/22

4:05 pm-11:40 pm

3 stops24h 35m

Budapest Ferenc Liszt Intl

Thu 1/29

5:20 pm-1:55 pm

2 stops27h 35m

$649

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 typical price of a round-trip flight between St. Louis and Budapest?

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 December is another great option to travel to Budapest, with average flight prices from St. Louis averaging around $686.

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 30% 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

Fastest flight time

12h 20m

Direct flights

None
The fastest flight from St. Louis to Budapest takes 12h 20m
There are no direct flights from St. Louis to Budapest. There are no popular flight routes from St. Louis to Budapest.
Search flight deals

  • 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 20m.

  • 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
7,619 reviews
Search Lufthansa flights
United AirlinesPriceFrom $578Free CancellationRating
7.4
9,092 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