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Cheap flights from St. Louis to Serbia from $586

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Serbia departing on 10/19. 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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Cheap round-trip flights

Air Canada Logo
9:15 am - 12:15 pmSTL-BEG
20h 00m2 stops
Air Canada Logo
1:50 pm - 3:29 pmBEG-STL
32h 39m2 stops
$586Air Canada
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Sun, Oct 19 - Tue, Nov 4
United Airlines Logo
3:30 pm - 1:10 pmSTL-BEG
14h 40m1 stop
United Airlines Logo
6:10 am - 11:44 pmBEG-STL
24h 34m2 stops
$589United Airlines
Find Deal
Sun, Oct 19 - Tue, Nov 4
United Airlines Logo
3:30 pm - 1:10 pmSTL-BEG
14h 40m1 stop
United Airlines Logo
1:50 pm - 1:55 pmBEG-STL
31h 05m1 stop
$606United Airlines
Find Deal
Sun, Oct 19 - Tue, Nov 4
Lufthansa Logo
6:43 pm - 4:55 pmSTL-BEG
16h 12m2 stops
Lufthansa Logo
6:15 am - 1:55 pmBEG-STL
14h 40m1 stop
$653Lufthansa
Find Deal
Fri, Oct 31 - Fri, Nov 7
United Airlines Logo
10:00 am - 12:50 pmSTL-BEG
19h 50m2 stops
United Airlines Logo
6:15 am - 1:55 pmBEG-STL
14h 40m1 stop
$656United Airlines
Find Deal
Wed, Dec 3 - Sun, Dec 7
United Airlines Logo
1:30 pm - 12:35 pmSTL-BEG
16h 05m2 stops
United Airlines Logo
6:10 am - 7:42 pmBEG-STL
20h 32m2 stops
$657United Airlines
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Tue, Oct 7 - Fri, Oct 17
Multiple Airlines Logo
4:05 pm - 7:10 pmSTL-BEG
21h 05m2 stops
Multiple Airlines Logo
6:15 am - 3:29 pmBEG-STL
40h 14m2 stops
$660Multiple Airlines
Find Deal
Fri, Oct 31 - Fri, Nov 7
Multiple Airlines Logo
3:30 pm - 3:55 pmSTL-BEG
17h 25m1 stop
Multiple Airlines Logo
1:50 pm - 3:47 pmBEG-STL
55h 57m2 stops
$792Multiple Airlines
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Fri, Oct 17 - Sun, Oct 26
Lufthansa Logo
3:50 pm - 12:50 pmSTL-BEG
14h 00m1 stop
Lufthansa Logo
6:15 am - 1:55 pmBEG-STL
14h 40m1 stop
$805Lufthansa
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Wed, Dec 3 - Sun, Dec 7
Delta Logo
6:30 am - 11:55 amSTL-BEG
23h 25m2 stops
Delta Logo
6:00 am - 8:39 pmBEG-STL
20h 39m2 stops
$923Delta
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Fri, Mar 13 - Fri, Mar 20

United Airlines flights from St. Louis to Serbia

Our best United Airlines deals on St. Louis to Serbia flight tickets
United Airlines
Oct 19
STL3:30 pmLambert-St Louis
14h 40m
1 stop
BEG1:10 pmBelgrade Nikola Tesla
Nov 4
BEG6:10 amBelgrade Nikola Tesla
24h 34m
2 stops
STL11:44 pmLambert-St Louis
$589
Find similar
United Airlines
Oct 19
STL3:30 pmLambert-St Louis
14h 40m
1 stop
BEG1:10 pmBelgrade Nikola Tesla
Nov 4
BEG1:50 pmBelgrade Nikola Tesla
31h 05m
1 stop
STL1:55 pmLambert-St Louis
$606
Find similar
United Airlines
Dec 3
STL10:00 amLambert-St Louis
19h 50m
2 stops
BEG12:50 pmBelgrade Nikola Tesla
Dec 7
BEG6:15 amBelgrade Nikola Tesla
14h 40m
1 stop
STL1:55 pmLambert-St Louis
$656
Find similar

Air Canada flights from St. Louis to Serbia

Our best Air Canada deals on St. Louis to Serbia flight tickets
Air Canada
Oct 19
STL9:15 amLambert-St Louis
20h 00m
2 stops
BEG12:15 pmBelgrade Nikola Tesla
Nov 4
BEG1:50 pmBelgrade Nikola Tesla
32h 39m
2 stops
STL3:29 pmLambert-St Louis
$586
Find similar
Air Canada
Oct 19
STL9:15 amLambert-St Louis
24h 10m
2 stops
BEG4:25 pmBelgrade Nikola Tesla
Nov 4
BEG6:10 amBelgrade Nikola Tesla
22h 30m
3 stops
STL9:40 pmLambert-St Louis
$1,065
Find similar
Air Canada
Oct 31
STL12:31 pmLambert-St Louis
18h 14m
3 stops
BEG12:45 pmBelgrade Nikola Tesla
Nov 7
BEG6:15 amBelgrade Nikola Tesla
20h 24m
3 stops
STL7:39 pmLambert-St Louis
$1,145
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Serbia 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 September 16, 2025.
Use the filters below to find and compare flights from St. Louis to Serbia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisBelgrade

STL - BEG

STLBEG

Lambert-St Louis

Sun 10/19

9:15 am-12:15 pm

2 stops20h 00m

Belgrade Nikola Tesla

Tue 11/4

1:50 pm-3:29 pm

2 stops32h 39m

$586

St. LouisBelgrade

STL - BEG

STLBEG

Lambert-St Louis

Sun 10/19

3:30 pm-1:10 pm

1 stop14h 40m

Belgrade Nikola Tesla

Tue 11/4

6:10 am-11:44 pm

2 stops24h 34m

$589

St. LouisBelgrade

STL - BEG

STLBEG

Lambert-St Louis

Sun 10/19

3:30 pm-1:10 pm

1 stop14h 40m

Belgrade Nikola Tesla

Tue 11/4

1:50 pm-1:55 pm

1 stop31h 05m

$606

St. LouisBelgrade

STL - BEG

STLBEG

Lambert-St Louis

Fri 10/31

6:43 pm-4:55 pm

2 stops16h 12m

Belgrade Nikola Tesla

Fri 11/7

6:15 am-1:55 pm

1 stop14h 40m

$653

St. LouisBelgrade

STL - BEG

STLBEG

Lambert-St Louis

Wed 12/3

10:00 am-12:50 pm

2 stops19h 50m

Belgrade Nikola Tesla

Sun 12/7

6:15 am-1:55 pm

1 stop14h 40m

$656

St. LouisBelgrade

STL - BEG

STLBEG

Lambert-St Louis

Tue 10/7

1:30 pm-12:35 pm

2 stops16h 05m

Belgrade Nikola Tesla

Fri 10/17

6:10 am-7:42 pm

2 stops20h 32m

$657

St. LouisBelgrade

STL - BEG

STLBEG

Lambert-St Louis

Fri 10/31

4:05 pm-7:10 pm

2 stops21h 05m

Belgrade Nikola Tesla

Fri 11/7

6:15 am-3:29 pm

2 stops40h 14m

$660

St. LouisBelgrade

STL - BEG

STLBEG

Lambert-St Louis

Fri 10/17

3:30 pm-3:55 pm

1 stop17h 25m

Belgrade Nikola Tesla

Sun 10/26

1:50 pm-3:47 pm

2 stops55h 57m

$792

St. LouisBelgrade

STL - BEG

STLBEG

Lambert-St Louis

Wed 12/3

3:50 pm-12:50 pm

1 stop14h 00m

Belgrade Nikola Tesla

Sun 12/7

6:15 am-1:55 pm

1 stop14h 40m

$805

St. LouisBelgrade

STL - BEG

STLBEG

Lambert-St Louis

Fri 3/13

6:30 am-11:55 am

2 stops23h 25m

Belgrade Nikola Tesla

Fri 3/20

6:00 am-8:39 pm

2 stops20h 39m

$923

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Serbia from

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

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 cheapest day to depart on your flight to Serbia?

According to our data, Monday is the cheapest day to fly to Serbia from St. Louis. The lowest ticket price found for a Monday departure recently was $894. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. The most expensive day to fly to Serbia is Sunday, with ticket prices averaging around $1,090.

Cheap St. Louis to Serbia flight deals and tips

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

Direct flights

None
There are no direct flights from St. Louis to Serbia. There are no popular flight routes from St. Louis to Serbia.
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  • When did momondo last update prices for flights from Lambert-St Louis Airport to Serbia?

    Prices for flights from Lambert-St Louis Airport to Serbia were last updated today.

  • How many operators does momondo search for flights from Lambert-St Louis Airport to Serbia?

  • How old do you have to be to fly from Lambert-St Louis Airport to Serbia?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Lambert-St Louis Airport to Serbia.

  • What documentation or ID do you need to fly to Serbia?

    The necessary travel and health documents for your Serbia trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from St. Louis to Serbia

Compare and see reviews for airlines that fly from St. Louis to Serbia with momondo
Airline
Rating
Free Cancellation
Price
Air CanadaPriceFrom $574Free CancellationRating
7.1
10,000 reviews
Search Air Canada flights
DeltaPriceFrom $696Free CancellationRating
7.9
7,957 reviews
Search Delta flights
LufthansaPriceFrom $710Free CancellationRating
6.8
7,407 reviews
Search Lufthansa flights
KLMPriceFrom $747Free CancellationRating
7.8
1,386 reviews
Search KLM flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from St. Louis to Serbia for you.

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

Yes. momondo allows you to filter the results for St. Louis to Serbia flights to just show those with flexible booking policies.

How can momondo help me find flights from St. Louis to Serbia?

momondo provides multiple filters to help you find the best flight to Serbia from St. Louis. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Yes. momondo can track prices for St. Louis to Serbia flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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