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Cheap flights from St. Louis to Serbia from $388

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 Serbia departing on 4/12. 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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Find the cheapest flights from St. Louis to Serbia

Cheap round-trip flights

Enter your travel dates to find the best prices.
Lufthansa Logo
6:40 pm - 5:05 pm
STL
-
BEG
15h 25m2 stops
Lufthansa Logo
1:30 pm - 11:59 pm
BEG
-
STL
17h 29m2 stops
$547Lufthansa
Wed, Jan 14 - Wed, Jan 21
Lufthansa Logo
3:50 pm - 12:50 pm
STL
-
BEG
14h 00m1 stop
Lufthansa Logo
1:30 pm - 11:59 pm
BEG
-
STL
17h 29m2 stops
$555Lufthansa
Wed, Jan 14 - Wed, Jan 21
Lufthansa Logo
3:50 pm - 12:50 pm
STL
-
BEG
14h 00m1 stop
Lufthansa Logo
1:30 pm - 11:59 pm
BEG
-
STL
17h 29m2 stops
$559Lufthansa
Wed, Jan 14 - Wed, Jan 21
Lufthansa Logo
3:50 pm - 12:50 pm
STL
-
BEG
14h 00m1 stop
Lufthansa Logo
6:15 am - 1:55 pm
BEG
-
STL
14h 40m1 stop
$642Lufthansa
Wed, Jan 14 - Wed, Jan 21
Lufthansa Logo
3:50 pm - 12:50 pm
STL
-
BEG
14h 00m1 stop
Lufthansa Logo
6:15 am - 1:55 pm
BEG
-
STL
14h 40m1 stop
$666Lufthansa
Wed, Jan 14 - Wed, Jan 21
Delta Logo
6:35 am - 11:55 am
STL
-
BEG
22h 20m2 stops
Delta Logo
6:05 am - 11:25 pm
BEG
-
STL
24h 20m2 stops
$730Delta
Sun, Jan 11 - Sun, Jan 18
Multiple Airlines Logo
9:57 am - 12:50 pm
STL
-
BEG
19h 53m3 stops
Multiple Airlines Logo
9:40 am - 3:29 pm
BEG
-
STL
36h 49m2 stops
$776Multiple Airlines
Wed, Jan 14 - Wed, Jan 21
Lufthansa Logo
3:50 pm - 12:50 pm
STL
-
BEG
14h 00m1 stop
Lufthansa Logo
1:50 pm - 10:58 pm
BEG
-
STL
40h 08m2 stops
$790Lufthansa
Sun, Jan 11 - Sun, Jan 18
Lufthansa Logo
3:50 pm - 12:50 pm
STL
-
BEG
14h 00m1 stop
Lufthansa Logo
6:15 am - 1:55 pm
BEG
-
STL
14h 40m1 stop
$846Lufthansa
Sun, Jan 11 - Sun, Jan 18
Air Canada Logo
9:57 am - 12:50 pm
STL
-
BEG
19h 53m3 stops
Air Canada Logo
1:50 pm - 12:29 pm
BEG
-
STL
29h 39m3 stops
$857Air Canada
Wed, Jan 14 - Wed, Jan 21

Lufthansa flights from St. Louis to Serbia

Our best Lufthansa deals on St. Louis to Serbia flight tickets
Lufthansa
Jan 14
STL6:40 pmLambert-St Louis
15h 25m
2 stops
BEG5:05 pmBelgrade Nikola Tesla
Jan 21
BEG1:30 pmBelgrade Nikola Tesla
17h 29m
2 stops
STL11:59 pmLambert-St Louis
$547
Find similar
Lufthansa
Jan 14
STL3:50 pmLambert-St Louis
14h 00m
1 stop
BEG12:50 pmBelgrade Nikola Tesla
Jan 21
BEG1:30 pmBelgrade Nikola Tesla
17h 29m
2 stops
STL11:59 pmLambert-St Louis
$555
Find similar
Lufthansa
Jan 14
STL3:50 pmLambert-St Louis
14h 00m
1 stop
BEG12:50 pmBelgrade Nikola Tesla
Jan 21
BEG1:30 pmBelgrade Nikola Tesla
17h 29m
2 stops
STL11:59 pmLambert-St Louis
$559
Find similar

Delta flights from St. Louis to Serbia

Our best Delta deals on St. Louis to Serbia flight tickets
Delta
Jan 11
STL6:35 amLambert-St Louis
22h 20m
2 stops
BEG11:55 amBelgrade Nikola Tesla
Jan 18
BEG6:05 amBelgrade Nikola Tesla
24h 20m
2 stops
STL11:25 pmLambert-St Louis
$730
Find similar
Delta
May 24
STL5:00 pmLambert-St Louis
46h 55m
2 stops
BEG10:55 pmBelgrade Nikola Tesla
Jun 1
BEG12:40 pmBelgrade Nikola Tesla
34h 18m
2 stops
STL3:58 pmLambert-St Louis
$1,401
Find similar
Delta
Dec 24
STL7:20 amLambert-St Louis
33h 05m
2 stops
BEG11:25 pmBelgrade Nikola Tesla
Jan 7
BEG6:05 amBelgrade Nikola Tesla
24h 34m
2 stops
STL11:39 pmLambert-St Louis
$1,788
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 December 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

Wed 1/14

6:40 pm-5:05 pm

2 stops15h 25m

Belgrade Nikola Tesla

Wed 1/21

1:30 pm-11:59 pm

2 stops17h 29m

$547

St. LouisBelgrade

STL - BEG

STLBEG

Lambert-St Louis

Wed 1/14

3:50 pm-12:50 pm

1 stop14h 00m

Belgrade Nikola Tesla

Wed 1/21

1:30 pm-11:59 pm

2 stops17h 29m

$555

St. LouisBelgrade

STL - BEG

STLBEG

Lambert-St Louis

Wed 1/14

3:50 pm-12:50 pm

1 stop14h 00m

Belgrade Nikola Tesla

Wed 1/21

1:30 pm-11:59 pm

2 stops17h 29m

$559

St. LouisBelgrade

STL - BEG

STLBEG

Lambert-St Louis

Wed 1/14

3:50 pm-12:50 pm

1 stop14h 00m

Belgrade Nikola Tesla

Wed 1/21

6:15 am-1:55 pm

1 stop14h 40m

$642

St. LouisBelgrade

STL - BEG

STLBEG

Lambert-St Louis

Wed 1/14

3:50 pm-12:50 pm

1 stop14h 00m

Belgrade Nikola Tesla

Wed 1/21

6:15 am-1:55 pm

1 stop14h 40m

$666

St. LouisBelgrade

STL - BEG

STLBEG

Lambert-St Louis

Sun 1/11

6:35 am-11:55 am

2 stops22h 20m

Belgrade Nikola Tesla

Sun 1/18

6:05 am-11:25 pm

2 stops24h 20m

$730

St. LouisBelgrade

STL - BEG

STLBEG

Lambert-St Louis

Wed 1/14

9:57 am-12:50 pm

3 stops19h 53m

Belgrade Nikola Tesla

Wed 1/21

9:40 am-3:29 pm

2 stops36h 49m

$776

St. LouisBelgrade

STL - BEG

STLBEG

Lambert-St Louis

Sun 1/11

3:50 pm-12:50 pm

1 stop14h 00m

Belgrade Nikola Tesla

Sun 1/18

1:50 pm-10:58 pm

2 stops40h 08m

$790

St. LouisBelgrade

STL - BEG

STLBEG

Lambert-St Louis

Sun 1/11

3:50 pm-12:50 pm

1 stop14h 00m

Belgrade Nikola Tesla

Sun 1/18

6:15 am-1:55 pm

1 stop14h 40m

$846

St. LouisBelgrade

STL - BEG

STLBEG

Lambert-St Louis

Wed 1/14

9:57 am-12:50 pm

3 stops19h 53m

Belgrade Nikola Tesla

Wed 1/21

1:50 pm-12:29 pm

3 stops29h 39m

$857

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 resultsSorted by cheapest first
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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 month to fly to Serbia?

The cheapest month to fly to Serbia from St. Louis is in November. Flight prices, which tend to average around $630, are often lower during this time because this is during the off-season. If you are unable to visit Serbia during the month of November, then departing from St. Louis during the month February is also very affordable. Most momondo users find prices during this month for around $701.

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

Fastest flight time

14h 41m

Direct flights

None
The fastest flight from St. Louis to Serbia takes 14h 41m
There are no direct flights from St. Louis to Serbia. There are no popular flight routes from St. Louis to Serbia.
Search flight deals

  • 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
LufthansaPriceFrom $567Free CancellationRating
6.8
7,632 reviews
Search Lufthansa flights
Air CanadaPriceFrom $574Free CancellationRating
7.1
10,531 reviews
Search Air Canada flights
DeltaPriceFrom $746Free CancellationRating
7.9
8,008 reviews
Search Delta flights
KLMPriceFrom $747Free CancellationRating
7.7
1,430 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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