What is the cheapest airline that flies from Lambert-St Louis to Belgrade Nikola Tesla?

United Airlines and Air Serbia are the most popular carriers operating from Lambert-St Louis to Belgrade Nikola Tesla

When did momondo last update prices for flights from Lambert-St Louis Airport to Belgrade Nikola Tesla Airport?

Prices for flights from Lambert-St Louis Airport to Belgrade Nikola Tesla Airport are refreshed on a daily basis.

How many operators does momondo search for flights from Lambert-St Louis Airport to Belgrade Nikola Tesla Airport?

As of October 2026, there are 2 operators available to choose from for flights from Lambert-St Louis Airport to Belgrade Nikola Tesla Airport.

How old do you have to be to fly from Lambert-St Louis Airport to Belgrade Nikola Tesla 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 Belgrade Nikola Tesla Airport.

What documentation or ID do you need to fly to Belgrade Nikola Tesla Airport?

The travel and health documents required for your trip to Belgrade Nikola Tesla 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 Belgrade Nikola Tesla Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$340 Cheap Flights from St. Louis to Belgrade in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Belgrade

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One-way

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4:05 pm - 7:10 pmSTL Lambert-St Louis-BEG Belgrade Nikola Tesla

20h 05m2 stops Toronto Pearson Intl Zurich

8:05 pm - 3:26 pmBEG Belgrade Nikola Tesla-STL Lambert-St Louis

50h 21m2 stops Zurich Toronto Pearson Intl

$740Multiple Airlines

Mon, Mar 1 - Thu, Mar 4

5:00 am - 12:50 pmSTL Lambert-St Louis-BEG Belgrade Nikola Tesla

24h 50m2 stops Chicago O'Hare Intl Frankfurt am Main

6:15 am - 1:45 pmBEG Belgrade Nikola Tesla-STL Lambert-St Louis

14h 30m1 stop Frankfurt am Main

$754United Airlines

Tue, Mar 2 - Fri, Mar 5

11:25 am - 12:50 pmSTL Lambert-St Louis-BEG Belgrade Nikola Tesla

18h 25m2 stops Chicago O'Hare Intl Frankfurt am Main

6:15 am - 3:26 pmBEG Belgrade Nikola Tesla-STL Lambert-St Louis

16h 11m2 stops Frankfurt am Main Toronto Pearson Intl

$761United Airlines

Mon, Mar 1 - Thu, Mar 4

8:00 am - 12:50 pmSTL Lambert-St Louis-BEG Belgrade Nikola Tesla

21h 50m2 stops Chicago O'Hare Intl Frankfurt am Main

6:15 am - 4:56 pmBEG Belgrade Nikola Tesla-STL Lambert-St Louis

41h 41m3 stops Frankfurt am Main Toronto Pearson Intl Newark

$761United Airlines

Tue, Mar 2 - Fri, Mar 5

4:05 pm - 1:55 pmSTL Lambert-St Louis-BEG Belgrade Nikola Tesla

14h 50m2 stops Toronto Pearson Intl Zurich

1:40 pm - 1:45 pmBEG Belgrade Nikola Tesla-STL Lambert-St Louis

31h 05m1 stop Frankfurt am Main

$765Multiple Airlines

Mon, Mar 1 - Thu, Mar 4

4:05 pm - 12:50 pmSTL Lambert-St Louis-BEG Belgrade Nikola Tesla

37h 45m2 stops Toronto Pearson Intl Frankfurt am Main

9:40 am - 3:26 pmBEG Belgrade Nikola Tesla-STL Lambert-St Louis

36h 46m2 stops Zurich Toronto Pearson Intl

$883Multiple Airlines

Sun, Nov 22 - Sun, Dec 6

6:50 pm - 12:50 pmSTL Lambert-St Louis-BEG Belgrade Nikola Tesla

35h 00m2 stops Chicago O'Hare Intl Frankfurt am Main

6:00 pm - 10:59 pmBEG Belgrade Nikola Tesla-STL Lambert-St Louis

35h 59m2 stops Munich Franz Josef Strauss Chicago O'Hare Intl

$884Lufthansa

Sun, Nov 22 - Sun, Dec 6

6:50 pm - 12:50 pmSTL Lambert-St Louis-BEG Belgrade Nikola Tesla

35h 00m2 stops Chicago O'Hare Intl Frankfurt am Main

6:15 am - 1:45 pmBEG Belgrade Nikola Tesla-STL Lambert-St Louis

14h 30m1 stop Frankfurt am Main

$885Lufthansa

Sun, Nov 22 - Sun, Dec 6

3:40 pm - 11:50 pmSTL Lambert-St Louis-BEG Belgrade Nikola Tesla

25h 10m1 stop Frankfurt am Main

6:15 am - 1:45 pmBEG Belgrade Nikola Tesla-STL Lambert-St Louis

14h 30m1 stop Frankfurt am Main

$904Lufthansa

Sun, Dec 27 - Wed, Jan 13

4:05 pm - 12:50 pmSTL Lambert-St Louis-BEG Belgrade Nikola Tesla

37h 45m2 stops Toronto Pearson Intl Frankfurt am Main

6:15 am - 6:16 pmBEG Belgrade Nikola Tesla-STL Lambert-St Louis

19h 01m3 stops Frankfurt am Main Toronto Pearson Intl Chicago O'Hare Intl

$905Multiple Airlines

Sun, Nov 22 - Sun, Dec 6

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United Airlines flights from St. Louis to Belgrade

Our best United Airlines deals on St. Louis to Belgrade flight tickets

United Airlines

Mar 2

STL5:00 amLambert-St Louis

24h 50m

2 stops

BEG12:50 pmBelgrade Nikola Tesla

Mar 5

BEG6:15 amBelgrade Nikola Tesla

14h 30m

1 stop

STL1:45 pmLambert-St Louis

$754

United Airlines

Mar 2

STL5:00 amLambert-St Louis

24h 50m

2 stops

BEG12:50 pmBelgrade Nikola Tesla

Mar 5

BEG6:15 amBelgrade Nikola Tesla

16h 11m

2 stops

STL3:26 pmLambert-St Louis

$761

United Airlines

Dec 27

STL8:32 amLambert-St Louis

32h 18m

2 stops

BEG11:50 pmBelgrade Nikola Tesla

Jan 13

BEG6:15 amBelgrade Nikola Tesla

14h 30m

1 stop

STL1:45 pmLambert-St Louis

$875

Lufthansa flights from St. Louis to Belgrade

Our best Lufthansa deals on St. Louis to Belgrade flight tickets

Lufthansa

Nov 22

STL6:50 pmLambert-St Louis

35h 00m

2 stops

BEG12:50 pmBelgrade Nikola Tesla

Dec 6

BEG6:00 pmBelgrade Nikola Tesla

35h 59m

2 stops

STL10:59 pmLambert-St Louis

$884

Lufthansa

Nov 22

STL6:50 pmLambert-St Louis

35h 00m

2 stops

BEG12:50 pmBelgrade Nikola Tesla

Dec 6

BEG6:15 amBelgrade Nikola Tesla

14h 30m

1 stop

STL1:45 pmLambert-St Louis

$885

Lufthansa

Dec 27

STL3:40 pmLambert-St Louis

25h 10m

1 stop

BEG11:50 pmBelgrade Nikola Tesla

Jan 13

BEG6:15 amBelgrade Nikola Tesla

14h 30m

1 stop

STL1:45 pmLambert-St Louis

$904

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisBelgrade

STL Lambert-St Louis - BEG Belgrade Nikola Tesla

STLBEG

Lambert-St Louis

Mon 3/1

4:05 pm-7:10 pm

2 stops20h 05m

Belgrade Nikola Tesla

Thu 3/4

8:05 pm-3:26 pm

2 stops50h 21m

$740

St. LouisBelgrade

STL Lambert-St Louis - BEG Belgrade Nikola Tesla

STLBEG

Lambert-St Louis

Tue 3/2

5:00 am-12:50 pm

2 stops24h 50m

Belgrade Nikola Tesla

Fri 3/5

6:15 am-1:45 pm

1 stop14h 30m

$754

Quickest round-trip

St. LouisBelgrade

STL Lambert-St Louis - BEG Belgrade Nikola Tesla

STLBEG

Lambert-St Louis

Mon 3/1

11:25 am-12:50 pm

2 stops18h 25m

Belgrade Nikola Tesla

Thu 3/4

6:15 am-3:26 pm

2 stops16h 11m

$761

St. LouisBelgrade

STL Lambert-St Louis - BEG Belgrade Nikola Tesla

STLBEG

Lambert-St Louis

Tue 3/2

8:00 am-12:50 pm

2 stops21h 50m

Belgrade Nikola Tesla

Fri 3/5

6:15 am-4:56 pm

3 stops41h 41m

$761

St. LouisBelgrade

STL Lambert-St Louis - BEG Belgrade Nikola Tesla

STLBEG

Lambert-St Louis

Mon 3/1

4:05 pm-1:55 pm

2 stops14h 50m

Belgrade Nikola Tesla

Thu 3/4

1:40 pm-1:45 pm

1 stop31h 05m

$765

St. LouisBelgrade

STL Lambert-St Louis - BEG Belgrade Nikola Tesla

STLBEG

Lambert-St Louis

Sun 11/22

4:05 pm-12:50 pm

2 stops37h 45m

Belgrade Nikola Tesla

Sun 12/6

9:40 am-3:26 pm

2 stops36h 46m

$883

St. LouisBelgrade

STL Lambert-St Louis - BEG Belgrade Nikola Tesla

STLBEG

Lambert-St Louis

Sun 11/22

6:50 pm-12:50 pm

2 stops35h 00m

Belgrade Nikola Tesla

Sun 12/6

6:00 pm-10:59 pm

2 stops35h 59m

$884

St. LouisBelgrade

STL Lambert-St Louis - BEG Belgrade Nikola Tesla

STLBEG

Lambert-St Louis

Sun 11/22

6:50 pm-12:50 pm

2 stops35h 00m

Belgrade Nikola Tesla

Sun 12/6

6:15 am-1:45 pm

1 stop14h 30m

$885

St. LouisBelgrade

STL Lambert-St Louis - BEG Belgrade Nikola Tesla

STLBEG

Lambert-St Louis

Sun 12/27

3:40 pm-11:50 pm

1 stop25h 10m

Belgrade Nikola Tesla

Wed 1/13

6:15 am-1:45 pm

1 stop14h 30m

$904

St. LouisBelgrade

STL Lambert-St Louis - BEG Belgrade Nikola Tesla

STLBEG

Lambert-St Louis

Sun 11/22

4:05 pm-12:50 pm

2 stops37h 45m

Belgrade Nikola Tesla

Sun 12/6

6:15 am-6:16 pm

3 stops19h 01m

$905

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from St. Louis to Belgrade

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

Prices

Airlines

What is the cheapest month to fly to Belgrade?

The month of December is, on average, the cheapest month to fly to Belgrade from St. Louis, with most prices found around $0. If you are unable to visit Belgrade during the month of December, then departing from St. Louis during the month November is also very affordable. Most momondo users find prices during this month for around $554.

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

You could potentially save up to 30% on your flight if you consider stops on a St. Louis to Belgrade flight.

When to book flights from St. Louis to Belgrade

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Belgrade according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap St. Louis to Belgrade (STL to BEG) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Belgrade

Best Price Found	$340
Fastest flight time	15h 30m
Direct flights	None

The best one-way flight to Belgrade from St. Louis in the past 72 hours is $340. The best round-trip flight deal from St. Louis to Belgrade found on momondo in the last 72 hours is $740.

The fastest flight from St. Louis to Belgrade takes 15h 30m

There are no direct flights from St. Louis to Belgrade. There are no popular flight routes from St. Louis to Belgrade.

Search flight deals

Frequently asked questions about flying from St. Louis to Belgrade

How far is Lambert-St Louis to Belgrade Nikola Tesla by plane?
There are 5237.0 mi between Lambert-St Louis and Belgrade Nikola Tesla. Flights usually cover this in 15h 30m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Lambert-St Louis Airport to Belgrade Nikola Tesla Airport?
Prices for flights from Lambert-St Louis Airport to Belgrade Nikola Tesla Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Lambert-St Louis Airport to Belgrade Nikola Tesla Airport?
As of October 2026, there are 2 operators available to choose from for flights from Lambert-St Louis Airport to Belgrade Nikola Tesla Airport.
How old do you have to be to fly from Lambert-St Louis Airport to Belgrade Nikola Tesla 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 Belgrade Nikola Tesla Airport.
What documentation or ID do you need to fly to Belgrade Nikola Tesla Airport?
The travel and health documents required for your trip to Belgrade Nikola Tesla 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 Belgrade Nikola Tesla 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 Belgrade?
Based on momondo bookings for flights between St. Louis and Belgrade, the leading airline is Lufthansa, making up 91% of the total bookings. Other popular airlines include United Airlines with 9%.

Best airlines flying from St. Louis to Belgrade

Compare and see reviews for airlines that fly from St. Louis to Belgrade with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $624	Free Cancellation	Rating 7.3 10,415 reviews		Search United Airlines flights
Lufthansa	PriceFrom $746	Free Cancellation	Rating 6.8 8,292 reviews		Search Lufthansa flights

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Why should I use momondo to find a flight deal from St. Louis to Belgrade?

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Can I find flights from St. Louis to Belgrade with flexible booking policies on momondo?

momondo does allow users to show only those flights to Belgrade from St. Louis which offer a flexible booking policy as well as other useful filters and features.

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Once all potential St. Louis to Belgrade flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from St. Louis to Belgrade right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of St. Louis to Belgrade flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Cheap flights from St. Louis to Belgrade from $340

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 Belgrade departing on 4/7. 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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How to get the cheapest flight ticket from St. Louis to Belgrade

What is the cheapest month to fly to Belgrade?

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

What is the cheapest airline that flies from Lambert-St Louis to Belgrade Nikola Tesla?

When to book flights from St. Louis to Belgrade

Cheap St. Louis to Belgrade (STL to BEG) flight deals and tips

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Frequently asked questions about flying from St. Louis to Belgrade

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An easier way to manage your Belgrade trip

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