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$510+ Cheap flights from St. Louis (STL) to Serbia

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/3. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BEG
Sep 6 — Sep 131
Sun 9/6
Sun 9/13
1 adult, Economy
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Cheap flight deals from St. Louis to Serbia

Cheapest flights from St. Louis to Serbia
Explore the most affordable flight options available from St. Louis to Serbia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 7, 2026.

This oojo deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/106:50 pm -
2 stops15h 30m
Sun 11/156:15 am -
1 stop14h 30m
Deal found 8/2$779
This oojo deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/93:30 pm -
1 stop14h 15m
Wed 9/306:15 am -
2 stops16h 28m
Deal found 8/2$841
This Delta deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/911:21 am -
2 stops17h 34m
Wed 9/3012:35 pm -
2 stops18h 07m
Deal found 8/6$852
This United Airlines deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/98:40 am -
2 stops24h 50m
Wed 9/306:10 am -
3 stops37h 03m
Deal found 8/5$864

Find flight deals from St. Louis to Serbia

Keep the following information in mind while searching for St. Louis to Serbia flight deals. Data was last updated August 7, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$779
(oojo)

One-way from

$510
(oojo)

Popular in

June

Cheapest in

November

Average price

$1,253
Provider with most accurate pricing for Lambert-St Louis-Belgrade Nikola Tesla flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Belgrade Nikola Tesla flights.
Search Deals
From Lambert-St Louis to Serbia
Search Deals
One-way flight from Lambert-St Louis to Serbia
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($211 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($31 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2026
Search Deals

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated August 7, 2026.
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

Cheapest round-trip
Quickest round-trip

St. LouisBelgrade

STL Lambert-St Louis - BEG Belgrade Nikola Tesla

STLBEG

Lambert-St Louis

Tue 11/10

6:50 pm-5:20 pm

2 stops15h 30m

Belgrade Nikola Tesla

Sun 11/15

6:15 am-1:45 pm

1 stop14h 30m

$779

St. LouisBelgrade

STL Lambert-St Louis - BEG Belgrade Nikola Tesla

STLBEG

Lambert-St Louis

Wed 9/9

3:30 pm-12:45 pm

1 stop14h 15m

Belgrade Nikola Tesla

Wed 9/30

6:15 am-3:43 pm

2 stops16h 28m

$841

St. LouisBelgrade

STL Lambert-St Louis - BEG Belgrade Nikola Tesla

STLBEG

Lambert-St Louis

Wed 9/9

11:21 am-11:55 am

2 stops17h 34m

Belgrade Nikola Tesla

Wed 9/30

12:35 pm-11:42 pm

2 stops18h 07m

$852

St. LouisBelgrade

STL Lambert-St Louis - BEG Belgrade Nikola Tesla

STLBEG

Lambert-St Louis

Wed 9/9

8:40 am-4:30 pm

2 stops24h 50m

Belgrade Nikola Tesla

Wed 9/30

6:10 am-12:13 pm

3 stops37h 03m

$864
Cheapest one-way
Quickest one-way

St. LouisBelgrade

STL Lambert-St Louis - BEG Belgrade Nikola Tesla

STLBEG

Lambert-St Louis

Thu 9/3

12:28 pm-3:45 pm

2 stops20h 17m

$510

St. LouisBelgrade

STL Lambert-St Louis - BEG Belgrade Nikola Tesla

STLBEG

Lambert-St Louis

Thu 9/3

7:00 am-12:20 pm

3 stops22h 20m

$656

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/3

Sorted by cheapest first

Best time to book a flight from St. Louis to Serbia

Have a flexible travel schedule? Discover the best time to fly to Serbia from St. Louis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Serbia

What is the cheapest month to book a flight from St. Louis to Serbia?

Currently, November is the cheapest month in which you can book a flight from St. Louis to Serbia (average of $630). Flying from St. Louis to Serbia in June is currently the most expensive (average of $1,348). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Serbia

Get insights into the airlines that provide service to Serbia. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Serbia. Reviews last updated August 7, 2026.
Read reviews from past customers who have flown Lufthansa from St. Louis to Serbia. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Lufthansa
6.8
Okay
8,177 reviews

Boarding

7.0

Overall

6.8

Comfort

6.8

Food

6.3

Entertainment

6.5

Crew

7.6

Reviews

1 / 20
6.0
Good

Kunal,Jul 2026

LAX - MUC

The flight was delayed from Munich to Thira, the wait was very annoying and frustrating
Lufthansa
6.8
Okay
8,177 reviews
Lufthansa
6.8
Okay
8,177 reviews

Boarding

7.0

Overall

6.8

Comfort

6.8

Food

6.3

Entertainment

6.5

Crew

7.6

Reviews

1 / 20
6.0
Good

Kunal,Jul 2026

LAX - MUC

The flight was delayed from Munich to Thira, the wait was very annoying and frustrating

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Serbia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from St. Louis to Serbia?

    Most people fly from Lambert-St Louis (STL) if they book a flight from St. Louis to Serbia. Lambert-St Louis is conveniently located just 12.7 mi from St. Louis’s city center.

  • How long is the flight from St. Louis to Serbia?

    A quick flight from St. Louis to Serbia can take about 15h 30m. Lufthansa provides one of the quickest options available for as low as $779. Airlines will cover a distance of 5231 mi.

  • Can I find deals for flights from St. Louis to Serbia that include hotel bookings?

    Yes. In addition to deals on St. Louis to Serbia flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Serbia?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Serbia.

  • Can I find deals for business class flights from St. Louis to Serbia?

    Yes. Cheapflights offers flight deals from St. Louis to Serbia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from St. Louis to Serbia?

    Currently, November is the cheapest month in which you can book a flight from St. Louis to Serbia (average of $630). Flying from St. Louis to Serbia in June is currently the most expensive (average of $1,348). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from St. Louis to Serbia

Discover the top airline that operate flights from St. Louis to Serbia. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 7, 2026.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$602Average$1,056FlexibilityNo cancel feeOn-time76%

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