STL - BUD

$460 Find Cheap Flights from St. Louis to Budapest - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Budapest departing on 9/9. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$793
Typical prices: $659-$931
Lufthansa
Sun 11/29Mon 12/7
STL - BUD • 1 stop
Cheapest one-way
$460
Lufthansa
Wed 9/9
STL - BUD • 1 stop
Top airlines
Cheapest • from $793 (round-trip)
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between St. Louis and Budapest. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $813 (round-trip)
Shortest trip • 12h 00m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 100% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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We hope you love your trip to Budapest!
Flight Deals
Booking Insights
Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Budapest that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from St. Louis to Budapest

Sun, Nov 29 - Mon, Dec 7
Lufthansa Logo
3:40 pm - 1:40 pm
STL
-
BUD
15h 00m
1 stop
Lufthansa Logo
5:00 pm - 9:13 pm
BUD
-
STL
35h 13m
2 stops
$793Lufthansa
Sun, Nov 29 - Mon, Dec 7
United Airlines Logo
1:08 pm - 5:55 pm
STL
-
BUD
21h 47m
2 stops
United Airlines Logo
1:20 pm - 6:06 pm
BUD
-
STL
35h 46m
2 stops
$804United Airlines
Sun, Nov 29 - Mon, Dec 7
United Airlines Logo
7:30 am - 4:15 pm
STL
-
BUD
25h 45m
2 stops
United Airlines Logo
10:00 am - 3:41 pm
BUD
-
STL
36h 41m
2 stops
$805United Airlines
Mon, Oct 12 - Tue, Oct 20
Lufthansa Logo
1:29 pm - 1:25 pm
STL
-
BUD
16h 56m
2 stops
Lufthansa Logo
5:55 am - 1:25 pm
BUD
-
STL
14h 30m
1 stop
$859Lufthansa
Tue, Sep 8 - Tue, Sep 15
Multiple Airlines Logo
2:40 pm - 9:40 am
STL
-
BUD
12h 00m
1 stop
Multiple Airlines Logo
5:55 am - 1:25 pm
BUD
-
STL
14h 30m
1 stop
$860Multiple Airlines
Tue, Sep 1 - Wed, Sep 9
Air Canada Logo
2:40 pm - 9:40 am
STL
-
BUD
12h 00m
1 stop
Air Canada Logo
11:45 am - 11:57 am
BUD
-
STL
31h 12m
2 stops
$862Air Canada
Tue, Sep 1 - Wed, Sep 9
United Airlines Logo
8:55 am - 9:40 am
STL
-
BUD
17h 45m
1 stop
United Airlines Logo
11:45 am - 2:15 pm
BUD
-
STL
33h 30m
2 stops
$862United Airlines
Tue, Sep 1 - Wed, Sep 9
British Airways Logo
11:22 am - 8:10 am
STL
-
BUD
13h 48m
1 stop
British Airways Logo
10:05 am - 9:44 pm
BUD
-
STL
18h 39m
1 stop
$867British Airways
Mon, Oct 12 - Tue, Oct 20
Lufthansa Logo
1:29 pm - 1:25 pm
STL
-
BUD
16h 56m
2 stops
Lufthansa Logo
1:20 pm - 9:21 pm
BUD
-
STL
15h 01m
2 stops
$867Lufthansa
Wed, Sep 16 - Wed, Oct 21
British Airways Logo
9:35 pm - 12:10 am
STL
-
BUD
19h 35m
1 stop
British Airways Logo
7:55 am - 7:30 pm
BUD
-
STL
18h 35m
1 stop
$946British Airways
Booking Insights

KAYAK's insights & trends for St. Louis to Budapest flights

Get data-powered insights and trends into flights from St. Louis to Budapest to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from St. Louis to Budapest?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from St. Louis to Budapest departing in November.

Flight prices are below average for this route right now.

Flights to Budapest from St. Louis usually cost between $832 and $1,563 in November.
The lowest price found in the past 5 days was $793 on Lufthansa (Nov 29-Dec 7).

What is the cheapest month to fly from St. Louis to Budapest?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from St. Louis to Budapest, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from St. Louis to Budapest is February, where tickets cost $0 (return) on average. On the other hand, the most expensive months are June and May, where the average cost of round-trip tickets is $1,478 and $1,421 respectively.

Good to know

Low season

October

Cheapest flight

$460
Best time to beat the crowds with an average 35% drop in price.
Most popular time to fly and prices are also 3% lower on average.
Flight from St. Louis to Budapest

When to book flights from St. Louis to Budapest

Are your dates flexible? Find out the best times to travel from St. Louis to Budapest based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from St. Louis to Budapest

  • What is the cheapest flight from St. Louis to Budapest?

    In the last 5 days, the lowest price for a flight from St. Louis to Budapest was $460 for a one-way ticket and $793 for a round-trip.

  • Do I need a passport to fly between St. Louis and Budapest?

    A passport is required to fly from St. Louis to Budapest.

  • Which airports will I be using when flying from St. Louis to Budapest?

    When flying out of St. Louis you will be using Lambert-St Louis. You will be landing at Budapest, also known as Budapest Ferenc Liszt Intl.

  • Which aircraft models fly most regularly from St. Louis to Budapest?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from St. Louis to Budapest?

    oneworld, and Star Alliance are the airline alliances operating flights between St. Louis and Budapest, with oneworld being the most commonly used for this route.

  • Which is the best airline for flights from St. Louis to Budapest, United Airlines or Lufthansa?

    The two airlines most popular with KAYAK users for flights from St. Louis to Budapest are United Airlines and Lufthansa. With an average price for the route of $863 and an overall rating of 7.4, United Airlines is the most popular choice. Lufthansa is also a great choice for the route, with an average price of $900 and an overall rating of 6.8.

  • How does KAYAK find such low prices on flights from St. Louis to Budapest?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from St. Louis to Budapest.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from St. Louis to Budapest?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Budapest from St. Louis is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from St. Louis to Budapest?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Budapest with an airline and back to St. Louis with another airline. Booking your flights between St. Louis and BUD can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from St. Louis to Budapest?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Budapest from St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 3 airlines serving from St. Louis to Budapest

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Budapest. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from St. Louis to Budapest? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 10051 reviews
7.3Comfort
8.1Crew
7.1Entertainment
7.7Boarding
6.6Food
Airline reviews

I almost missed my connection in Chicago due to having to wait on a gate to be open I am assuming. Having to run from E terminal to C terminal and I barely made it there before they closed the door. This may not be the actual airline's fault it's crazy how there is so little time between flight especially when they are placed so far apart in the airport.

8.0 ExcellentSherry, Jul 2026
COU - ORD
Read more United Airlines reviews

I almost missed my connection in Chicago due to having to wait on a gate to be open I am assuming. Having to run from E terminal to C terminal and I barely made it there before they closed the door. This may not be the actual airline's fault it's crazy how there is so little time between flight especially when they are placed so far apart in the airport.

Our flight was great with an unexpected upgrade. However, four days into our travel we are still without a piece of luggage. The bag tracker has not been accurate, the airline is not communicating with me or the luggage delivery service and no one is willing to take responsibility or guarantee any kind of support or reimbursement. Unfortunately, we do not have the option to easily shop to replace items as we are currently on a cruise. I have been very disappointed by United Airlines response.

Fine not above and beyond as I had a connection that was delayed due to maintenance

HORRIBLE, my initial flight was cancelled, they made me pay $200 extra dollars and that got cancelled as well! After 6 cancellations I decided to get a refund because I needed to get home to my babies. Out of $1000+ dollars they offered me only $40 in refund! Totally unacceptable! The flight that they cancelled I was able to fly it on another airline. I had to spend $400 on one way tickets just to get home! I’m still getting the runaround.

Flight was delayed. De-icing took a while. When we landed had to wait for another plane to vacate our gate. Just an overall bad experience.

Flight was delayed only slightly before takeoff due to traffic control. However, the flight arrived early to ORD. Good flight. United has been very reliable for me.

Our flight was understandably diverted to a small regional airport in Laramie, Wyoming due to weather conditions, which I fully recognize and appreciate. However, the low rating stems from the experience that followed: passengers remained on board for over an hour without the option to deplane and stretch, despite the aircraft being stationary. Although the pilot opened the cabin door, only he was permitted to exit. Meanwhile, passengers grew increasingly uncomfortable as warm summer air entered the cabin through the open door, and being in the second row meant we were impacted immediately. While the flight attendants made efforts to keep everyone at ease, I believe allowing passengers to deplane briefly, given the extended delay, would have significantly improved the overall experience.

Overall a very poor experience - booked premium economy tickets but due to last minute flight delays , all my itinery went for a toss and had to fly economy class with no access to lounge or any compensation by united airlines to make up for the flight delays . i had expected better experience than that from united.

Onboarding - it would be great to see on the screen what group they were boarding. It was very confusing on who was boarding (even though they called it out) they were not clear and the space to board was strange.

Older plane. Food was really bad, almost not worth the effort. Huge difference with European based airlines.

Perfect airline, super friendly, great service, tasty food. Would fly again.

We exited from a plane from LAX TO MUC containing 853 passengers. Passport control was packed and very slow as they fingerprinted and photgraphed everyone. After finally getting though we ran to the gate listed on our boarding pass. We made it just as boarding was suppost to begin. No one was there. We started running again and found a Lufthansa gate open and spoke with them. We were told the gate had changed and they called the correct gate that we were coming. We started running again, but needed to wait for the train to get to the correct terminal. Running again we made it to the gate. The plane was still there but they said it was too late. So we went to the Lufthansa help desk, they told us it was our fault for missing our flight and that if we didn't buy a new ticket from them for €256 each our return trip to the states would be cancelled. Needless to say this was very disapointing to find out on the day before Christmas that we had to pay an extra €512 to complete our trip we had already paid $3344 for. We were left with no choice. No Christmas spirit there. Unhappy custumers.

Took a long time to board. A long wait at the but taking us to the plain

Slightly delayed but still a more comfortable experience to take a real airline instead of a budget one.

The flight was delayed more than 1.5 hours. Phone calls to united did not satisfy our need to get to Chicago to met family for fight to europe. I was told the flight was booked thru luftansa and united could not make adjustments. When call luftansa they were unaware of the significant delay on the united flight out of mci. They would not authorize a flight change. We went to the airport, as if we would be flying as scheduled, United checked us in, as if our flight would leave as scheduled. We took our bag to be checked to the baggage drop and the agent their confirmed our flight was significantly delayed. She worked for 30 min to get us on another flight. We ended up flying to Denver then to Munich. The rest of the family that flew to Chicago for our meet up and flight to Europe ended up flying to Munich alone. We meet up in Munich for our last leg to luxembourg. In luxembourg we learned on bag was scheduled on our delayed flight. The flight was canceled and we did not receive the bag in lux. We filed a lost back claim. Now 3 days later we STILL do not have the bag. It is apparently in luxembourg and they maybe tried to deliver, however the names on the door of the air b&b do not match the name on the baggage claim so the French speaking delivery person called no one could understand him so he took the bag and left. My brother, traveling with me under a different reservation , has been without essentials for 3 days. One or all of us has stayed "home" each day waiting on the bag. Today was my turn. Delivery window was 10:30 to 2:30. No attempt to knock or ring bell. After the hang up call, my brother called me and told me to check the door. There was nothing there. No sign of attempted delivery, no delivery man, nothing. Being unable to change clothes and having family members take turns waiting on a bag that never comes has ruined this family vacation. Thanks United/Luftansa

The flight left an hour late and no explanation. Food was basically a few snacks out of bags and tiny cup of soda. Crew was pretty friendly.

The The check in process was terrible on both ends. It was not clear if we should use the United, Lufthansa, or Aragrant number. It took over an hour to check in on the front end – and then at return the Lufthansa online check in failed multiple times and only after two calls to their phone number could we accomplish the task. The link to the Kayak site provided no access for check in. This difficulty and ambiguity on both ends will affect our interest in using Kayak for foreign travel in the future.

This was a terrible flight. Crowded flight. Difficult boarding. Our bags were lost and never made it to Budapest. Here with no bags, and unsure if we will get them. Terrible flight. Will avoid Lufthansa and Frankfort in the future.

You lost my bag then waiting on the phone for 30 mins for customer service just to be directed to call another number

Boarding staff, crew and food needs a lot of improvement!! It was awful Aircraft was old with minimal legspace

I liked that we got there safely. I disliked long delays, gate and ticket agents incompetence and apathy and having my luggage lost. Five days later I've yet to get anything more than a generic apology from British Air. Luggage yet to be located, much less returned.

We always use BA due to the direct flight options, we have always had a pleasant flight with BA.

Gate information deliberately delayed to only one hour B4 flight, lack of info finding gate.

Flight fine, only served water or blueberry juice option- tight fit forward- resting head on tray table difficult and especially if seat reclined in front of you and I’m only 5’2. Uncomfortable

Our flight from ORD was cancelled and BA rebooked is on a flight that originated before the time that they booked us on it. They did not realize we were already arrived in Chicago. Then American Airlines helped us get checked in to the new flight (the one BA assigned to us) which flight we did take although it was delayed about 2 hours, and our assigned seats that we paid for - on the original flight- were lost we did at least get to sit together. It was not too painful for all the changes and we made it to the UK alright though all in all with all the delays and cancellations the flight took about 20 hours to get us here.

though there was space in the cabin they asked us to check in our trolleys. As a result lots of things arrived damaged in Larnaca. They were fragile. When we asked the attendants why that.....they said talk to the captain!!! Unbelievable!

In London, everyone was very helpful to make sure all passengers find the next aircraft, as everybody missed their connection due to the late departure in Miami. My mom‘s airplane left two hours after her arrival to London however, for my nephew they only had room on the next flight seven hours later. In the last minute they contacted him and was able to put him on the same flight as my mom./ which we were very thankful for Therefore, all his luggage was on the other aircraft and have not reached Budapest yet.

This was a late night flight but the lights was on all the time and kids were screaming and many people were so loud. I was expecting to have a little rest on the plane considering it is late night but this way I couldn't. I think if at least the light would've been off / lower then people could feel they should be quieter.

Boarding ,checking in was easy and quick . Comfort was not good.

Delayed by an hour, with no real explanation given. Staff were very friendly. Food was ok, but nothing special. No USB sockets to charge devices.

Everything you need to know for your flight from St. Louis to Budapest

Information on your arrival and departure airports