STL - BEG

$549 Find Cheap Flights from St. Louis to Belgrade

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Belgrade departing on 2/6. 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
$549
Typical prices: $700-$701
KLM
Fri 2/6Fri 2/20
STL - BEG • 2 stops
Cheapest one-way
Multiple Airlines
Fri 1/9
STL - BEG • multi-stop
Top airlines
KLM
Cheapest • from $549 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
November
Cheapest • 31% price drop
July
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
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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

Fri, Feb 6 - Fri, Feb 20
KLM Logo
7:10 am - 11:55 am
STL
-
BEG
21h 45m2 stops
KLM Logo
6:05 am - 5:42 pm
BEG
-
STL
18h 37m2 stops
$549KLM
Wed, Feb 25 - Sun, Mar 1
United Airlines Logo
6:00 am - 12:50 pm
STL
-
BEG
23h 50m2 stops
United Airlines Logo
6:15 am - 1:55 pm
BEG
-
STL
14h 40m1 stop
$559United Airlines
Wed, Feb 25 - Sun, Mar 1
United Airlines Logo
8:17 am - 12:50 pm
STL
-
BEG
21h 33m2 stops
United Airlines Logo
6:15 am - 1:55 pm
BEG
-
STL
14h 40m1 stop
$560United Airlines
Wed, Feb 25 - Sun, Mar 1
United Airlines Logo
10:10 am - 12:50 pm
STL
-
BEG
19h 40m2 stops
United Airlines Logo
6:15 am - 3:29 pm
BEG
-
STL
40h 14m2 stops
$568United Airlines
Wed, Feb 25 - Sun, Mar 1
United Airlines Logo
9:55 am - 12:50 pm
STL
-
BEG
19h 55m2 stops
United Airlines Logo
6:15 am - 9:05 pm
BEG
-
STL
21h 50m2 stops
$570United Airlines
Fri, Feb 6 - Fri, Feb 20
Air Serbia Logo
6:44 pm - 10:10 am
STL
-
BEG
32h 26m1 stop
Air Serbia Logo
10:45 am - 6:00 pm
BEG
-
STL
14h 15m1 stop
$875Air Serbia
Fri, Feb 6 - Fri, Feb 20
Multiple Airlines Logo
9:57 am - 10:30 am
STL
-
BEG
17h 33m3 stops
Multiple Airlines Logo
6:15 am - 3:29 pm
BEG
-
STL
40h 14m2 stops
$1,147Multiple Airlines
Wed, Feb 25 - Sun, Mar 1
United Airlines Logo
8:41 am - 12:50 pm
STL
-
BEG
21h 09m2 stops
United Airlines Logo
6:15 am - 10:14 pm
BEG
-
STL
22h 59m3 stops
$1,337United Airlines
Mon, Jun 1 - Fri, Jul 24
Lufthansa Logo
6:49 pm - 11:25 pm
STL
-
BEG
21h 36m2 stops
Lufthansa Logo
6:15 am - 3:21 pm
BEG
-
STL
16h 06m2 stops
$1,443Lufthansa
Mon, Jun 1 - Fri, Jul 24
Lufthansa Logo
6:49 pm - 11:25 pm
STL
-
BEG
21h 36m2 stops
Lufthansa Logo
5:50 am - 1:25 pm
BEG
-
STL
14h 35m1 stop
$1,444Lufthansa
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 February.

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 June, where the average cost of round-trip tickets is $1,321 and $1,217 respectively.

Good to know

Low seasonDecember
Cheapest flight$549
Best time to beat the crowds but there is an average 44% increase in price.
Most popular time to fly with an average 8% 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 $549 for a round-trip ticket.

  • 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?

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

  • Which is the best airline for flights from St. Louis to Belgrade, Delta or KLM?

    The two airlines most popular with KAYAK users for flights from St. Louis to Belgrade are Delta and KLM. With an average price for the route of $765 and an overall rating of 7.9, Delta is the most popular choice. KLM is also a great choice for the route, with an average price of $815 and an overall rating of 7.7.

  • 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 4 airlines serving 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.
7.9
DeltaOverall score based on 8032 reviews
8.1Boarding
7.9Comfort
8.5Crew
7.8Entertainment
7.2Food
Airline reviews

It was Delta, but the flight attendants were stressful and disrespectful. I am a diamond member a travel weekly. I have not had a negative thing to share in quite some time. But this was noticeable.

2.0 MediocreWilliam, Jan 2026
LGA - BOS
Read more Delta reviews

It was Delta, but the flight attendants were stressful and disrespectful. I am a diamond member a travel weekly. I have not had a negative thing to share in quite some time. But this was noticeable.

Comfort Plus seat 11E seemed smaller than prior flights. The movie selection is good. Watched most of the most recent Tron movie. I'll watch the remaining part later as my movie is saved in the Delta Seatback Experience.

Flight was late from Newark to Atlanta, I asked flight attendant to please let my family of 3 out first when we landed to Atlanta because we were late for our connecting flight to Quito. She didn't and we were late for 5 minutes we couldn't board the plane and spend hours trying to get another flight with customer service for the next day.

I really liked the legroom. I am 6’4”.a at For some reason our seats were not together and using the app to fix it didn’t work. Passengers were nice enough to move for us but you should absolutely ensure a parent sits with their child.

Late delayed flight delays boarding and delays leaving and delays on arrival too. Cramped plane no room no food.

DTW line is too long. The flights from DTW to BWI are always delayed for unknown reasons.

Delta canceled our flight and we had to scramble to find another airline to get home. Phoenix is not a delta hub so they didn’t have another plane. It would have been a red eye though Salt Lake City. Getting in at 5am. No bueno.

This flight was no comparison to our prior flight. I'm thinking it all has to do with the age of the aircraft.

This flight was a first class choice and left much to be desired. Seat backs on seats were falling apart and torn. Seats actually didn't come to a "full & upright position". Pull out table was sprung. Not any significant leg room. All in all we were on an obviously older plane and felt overcharged for what we received as first class.

A 12 hour flight during the day with one real meal service - are you kidding? Also the breakfast was one of the worst and not what was listed

Terrible last row seats many seats available but no offer to move to better seat

Delay and had to run between flight to get my connection due to this delay but besides that the overall experience was ok. I arrived with just an hour of delay.

At the airport, terrible, I do not want to even remember it. It was too humiliating for a business class passenger.

Flight was ok but lack of communication cost me to literally beg to be put on another flight as connecting flight had departed

They forgot to serve food and the crew was very unfriendly. Never experienced such a bad KLM flight. Usually fly from Toronto. New York was different.

Couldn’t get boarding pass in SLC even with help from a redcoat, so had to find a desk in AMS to get boarding pass. Technical problems so not sure why. Very inconvenient. The KLM app is not as user friendly as most apps. Also had to wait almost an hour on the tarmac for a fuel truck, which caused us to miss a connecting bus in LUX.

The immigration hall in Amsterdam was understaffed, so passport checking was slower than it should be for a major airport. They need to get the automatic readers up and running for non EU passport holders. Waiting in line after a long flight feels a bit abusive.

Over 1 Hr delay. No APU so no AC on ground. Plane was hot during boarding and then they closed the doors over 20 minutes before engine start so interior of plane was steamy hot and stuffy. Could have been helped by opening doors until ready to depart.

First of all we couldn’t check in online, then we learn at the airport we were on stand by for KLM’s mistake of overbooking. The seats were not comfy at all. Our luggage got lost.

Ad experience - been flying many years with them but they are losing out to other carriers with their service and bagage / seating policy. My 2 12-yo kids were not placed with the parent. Absurdity.

Flight cancellations, delays, mass confusion and disorganization! That’s Air Canada for you, nothing new. I would have chosen a different airline if it were an option, and Air Canada continues to prove they don’t care about their customers.

everything was fine. but paying for 1 piece of check-in luggage and denying passengers to board with carry-on luggage which by air line's standards does not fit is not acceptable. when one travels for a longer time one needs to have some essentials

Couldn't fit knees, only 1 toilet working, didn't get anything to drink cause the stewards were not able to get to us

Flight was canceled for a reason they knew hours before but did not mention. Next the gate chnage from 37 to 38 at least 10 times. Ridiculous.

The flight from SFO to YVR was delayed and my bag did not make it to my next flight from YVR to SYD. It took almost 3 days after I landed to get my bag and when I got it, it was filled with dust

Our biggest complaint about Air Canada is that if you don’t like your seat during check-in, there’s a fee to move elsewhere. On our flight from YUL to FFL, we were charged to change seats—just regular seats. What’s maddening is that the plane wasn’t even full; there were even a few people sleeping in the middle row sections (entire rows, completely empty), using them as beds. In my opinion, charging passengers for seat changes is a cash grab by Air Canada. They are definitely not the airline they were back in the day. I suppose they need to gouge the consumer now that they pay their attendants while on ground. One out of 10.

Nothing specific. Cabin temperature was too high for some reason.

It was just fine. I managed to make all my connection too sbut had trouble in Munich with no wheel chair and trouble trying to get help from the airport people to get to the other terminal for my flight. Finally a wonderful lady Amelia, helped me to make my flight connection Timon with zero time to spare.

Over 40 years ago my AC return flight was canceled, during this last summer the same thing happened. AC denied everything Canadian like paying for accommodations and basic necessities. So why would I ever want to fly AC again? This last flight my wife took the return flight had problems and left late, so I guess they are getting better. However I have no faith in this airline so I drove to this last destination! I'll never fly AC again!!!

Great check in process in LA and good service The check in process as well as at the gate is way better in the US versus canada 🇨🇦

Crew was professional and great, flight was clean. However food was pathetic. I ordered a Hindu meal assuming no meat but they served chicken. Need to be very specific- Hindu meal should be categorize as Vegetarian - no meat or egg. Or it should be specific that we are serving meat.

Late flight Delays Poor service Poor staff Worst airline ever

Ground staff and cabin crew were excellent. Flight was perfectly on time. Zero issues.

Even after a delay, getting off the ground, thanks for keeping me safe, the airline made certain that my connecting flight was rebooked to get me to my final destination. It was actually rebooked twice, and my luggage still managed to meet me. The airline gave me a credit for food and beverage to be used at the airport vendors, regretfully, the credit did not transfer to my final boarding pass. Oh, well…

Trip was smooth, good drew, average meal, almost cold coffee. Excellent landing. Did not enjoy going down the stairs, walking to the gate, walking up the stairs, going a long walk to the exchange gate, and going down the stairs again to be bussed all the way where we originally landed to take our next flight! Over all an average experience. Thank you.

I booked extra leg room, due to seat neighbor i now consider extra shoulder and arm room as well. Seems like the seats shrink in width now The crew was very friendly and professional ( 100%). Food was good not great, breakfast was bad, a dry slice of bread would have been better. Facilities clean.

Boarding procedure should have the crew and personnel who are more trained, in a sense of precisely knowing what can be done and what cannot. They do not have the exact information on what you should do in the first place, also the boarding itself was slightly delayed due to the aircraft "not being ready".

Luggage transfer in Chicago was not performed in time. I received my luggage at my destination two days later.

love the crews and my only problem was the delay at Frankfurt was very bad. I have travelled with Lufthansa for over 30 years now and this was cost me some planned business appointment

The flight delay made the connection a bit tight but that's outside the flight crew's control.

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

Information on your arrival and departure airports