STL - BEG

$625 Find Cheap Flights from St. Louis to Belgrade

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 Belgrade departing on 5/10. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Belgrade

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Belgrade, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Belgrade, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$1,092
Typical prices: $1,556-$943
KLM
Wed 5/13Tue 5/26
STL - BEG • 2 stops
Cheapest one-way
$625
Austrian Airlines
Sun 5/10
STL - BEG • 2 stops
Top airlines
Cheapest • from $1,092 (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 Belgrade. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $993 (round-trip)
Shortest trip • 13h 47m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 34% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Belgrade!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from St. Louis to Belgrade (STL-BEG)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Belgrade 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 Belgrade

Wed, May 13 - Tue, May 26
KLM Logo
11:25 am - 11:55 am
STL
-
BEG
17h 30m
2 stops
KLM Logo
6:15 am - 5:16 pm
BEG
-
STL
18h 01m
2 stops
$1,092KLM
Wed, May 13 - Tue, May 26
Multiple Airlines Logo
1:05 pm - 10:25 am
STL
-
BEG
14h 20m
2 stops
Multiple Airlines Logo
2:00 pm - 1:25 pm
BEG
-
STL
30h 25m
1 stop
$1,109Multiple Airlines
Wed, May 13 - Tue, May 26
Multiple Airlines Logo
1:05 pm - 10:25 am
STL
-
BEG
14h 20m
2 stops
Multiple Airlines Logo
2:00 pm - 1:25 pm
BEG
-
STL
30h 25m
1 stop
$1,110Multiple Airlines
Tue, May 12 - Wed, Aug 5
Delta Logo
6:04 pm - 10:55 pm
STL
-
BEG
21h 51m
2 stops
Delta Logo
6:15 am - 8:37 pm
BEG
-
STL
21h 22m
2 stops
$1,243Delta
Tue, May 12 - Wed, Aug 5
Multiple Airlines Logo
10:19 am - 11:55 am
STL
-
BEG
18h 36m
2 stops
Multiple Airlines Logo
6:35 am - 4:51 pm
BEG
-
STL
17h 16m
2 stops
$1,250Multiple Airlines
Sun, May 24 - Thu, Jun 25
Air Canada Logo
2:15 pm - 4:30 pm
STL
-
BEG
19h 15m
2 stops
Air Canada Logo
6:15 am - 8:07 pm
BEG
-
STL
20h 52m
2 stops
$1,270Air Canada
Mon, May 11 - Mon, Aug 10
United Airlines Logo
9:21 am - 4:10 pm
STL
-
BEG
23h 49m
2 stops
United Airlines Logo
2:10 pm - 10:09 am
BEG
-
STL
50h 59m
2 stops
$1,273United Airlines
Mon, Jun 1 - Fri, Jul 24
Air Canada Logo
2:15 pm - 4:05 pm
STL
-
BEG
42h 50m
2 stops
Air Canada Logo
1:05 pm - 2:02 pm
BEG
-
STL
31h 57m
2 stops
$1,320Air Canada
Mon, Jun 1 - Fri, Jul 24
Air Canada Logo
2:15 pm - 4:05 pm
STL
-
BEG
42h 50m
2 stops
Air Canada Logo
1:05 pm - 2:02 pm
BEG
-
STL
31h 57m
2 stops
$1,321Air Canada
Tue, May 12 - Wed, Aug 5
Multiple Airlines Logo
9:35 pm - 5:15 pm
STL
-
BEG
12h 40m
1 stop
Multiple Airlines Logo
10:25 am - 11:51 pm
BEG
-
STL
20h 26m
2 stops
$1,324Multiple Airlines
Booking Insights

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

Get data-powered insights and trends into flights from St. Louis to Belgrade 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 Belgrade?

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 Belgrade departing in May.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from St. Louis to Belgrade, 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 Belgrade is November, where tickets cost $630 (return) on average. On the other hand, the most expensive months are December and May, where the average cost of round-trip tickets is $1,321 and $1,229 respectively.

Good to know

Low seasonDecember
Cheapest flight$625
Best time to beat the crowds but there is an average 39% increase in price.
Most popular time to fly with an average 10% increase in price.
Flight from St. Louis to Belgrade

When to book flights from St. Louis to Belgrade

Are your dates flexible? Find out the best times to travel from St. Louis to Belgrade 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 Belgrade

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

    In the last 3 days, the lowest price for a flight from St. Louis to Belgrade was $625 for a one-way ticket and $1,092 for a round-trip.

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

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

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

    When flying out of St. Louis you will be using Lambert-St Louis. You will be landing at Belgrade, also known as Belgrade Nikola Tesla.

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

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

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

    Star Alliance is the only airline alliance operating flights between St. Louis and Belgrade.

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

    The two airlines most popular with KAYAK users for flights from St. Louis to Belgrade are United Airlines and Lufthansa. With an average price for the route of $1,079 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 $1,043 and an overall rating of 6.8.

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

    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 Belgrade.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Belgrade 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 Belgrade?

    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 Belgrade with an airline and back to St. Louis with another airline. Booking your flights between St. Louis and BEG 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 Belgrade?

    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 Belgrade 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 airlines flying from St. Louis to Belgrade

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Belgrade. 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 Belgrade? 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 9677 reviews
8.1Crew
7.3Comfort
7.1Entertainment
7.7Boarding
6.6Food
Airline reviews

Some crew were unfriendly or in some cases just straight up rude.

6.0 GoodAnonymous, Apr 2026
SFO - YVR
Read more United Airlines reviews

Some crew were unfriendly or in some cases just straight up rude.

Booked through Kayak Business, had a seat in middle and towards back due to booking rate, not comfortable.

Was great in general, try to respect time and excuses when slight changes have been made, appreciated!

A long delay. Don't travel late in the day.

Super friendly with lots of drink options an entertainment. Friendly crew.

Standard flight with a drinks and a snack- overall very quick flight. The flight attendants were very strict, bordered on rude.

Outstanding service, efficient & friendly crew, flight was safe, comfortable & on time

United Airline crews were very friendly and very attentive. 12 hours flight was gone like in a shorter one.

Delayed - weather wasn't bad at either end. Also sat on tarmac in ORD.

Food was surprisingly delicious. Space in the seat is horrible when the seating front is reclined. Movie offerings were terrible. Crew was friendly and helpful.

Flight was delayed by several hours and then cancelled due to weather. But Staff was very helpful getting me on a different flight. United should offer food coupons and tooth brush and paste for stranded passengers

I upgraded to the business class cabin. It was the poorest business class I have ever experienced. No access to any business lounge in Tampa airport. Seats are not comfortable. I had a window seat and had to step/crawl over the next seat. Food was mediocre and service below average for business class. Bathroom location was ridiculous. No place to wait. I cannot believe I paid this kind of money and will never fly Lufthansa Discover again. They really should reimburse me somehow.

Boarding was disorganized. The door to one to the toilets wouldn’t lock. The plane was shockingly cramped, and clearly used for domestic flights due to the menus for items to sell domestic travelers. United should be ashamed of its small seats, tiny unclean toilets, and money grubbing stance toward services, compared to Lufthansa, Emirates, and most international carriers United is awful.

Was never allowed on and not refunded the full amount of the ticket plus charged a $300 processing fee.

Terrible. Lost our luggage for 4 days. Did not advise passengers there was a strike in Barcelona Airport and had zero personnel on hand at airport to advise passengers on where to go to file claims. We had to fend for ourselves. No assistance at all other than an online claims submission process that we had to find out about on our own.

Lufthansa cancelled our flight from Los Angeles to Naples Italy on March 10 for scheduled flight on March 12 Very stressful experience trying to arrange alternatives. Will never fly again with Lufthansa

Everything could have been better. What needed to be wrong with United went wrong

The staff was bit rude when I asked for an extra drink after one beer, asked for one wine glass.

Very good, i got two seats for myself, and was comfortable with the blanket i got

I hated the FRA Airport. Confusing signage, including the path to Immigration and Security It seems that the airport grew haphazardly over the years. I have been through multiple WW Hubs with much better experiences.

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

Information on your arrival and departure airports