What are the cheapest airlines flying from St. Louis to Belgrade round-trip?

Lufthansa, at $682, was found to be the cheapest airline from St. Louis to Belgrade. An alternate airline flying to your destination would be United Airlines. Lufthansa is 28% cheaper than the average price of flights available within the next 90 days to this destination.

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

Currently, January is the cheapest month in which you can book a flight from St. Louis to Belgrade (average of $688). Flying from St. Louis to Belgrade in June is currently the most expensive (average of $1,172). 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.

What is the cheapest day to fly from St. Louis to Belgrade?

Travelers seeking maximum savings on their St. Louis to Belgrade flight should consider departing on Monday afternoons when fares are most often at their lowest. Wednesday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

In terms of precipitation, rainfall in Belgrade ranges from 1.6 - 4.0 inches per month. June is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Belgrade when rainfall is around 1.6 in.

If weather is an important factor for your trip to Belgrade, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 33.8 F).

What are the most popular airlines that fly from St. Louis to Belgrade?

Before booking your flight from St. Louis to Belgrade check out the most popular airlines for this route: Air Canada, Delta or KLM.

What is the cheapest day to fly round-trip from St. Louis to Belgrade?

It’s generally more expensive to depart on a Sunday, if you have to leave on this day you can still search on Cheapflights to find great options that meet your needs.

What is the cheapest month to fly from St. Louis to Belgrade?

Our data shows that February tends to be the cheapest month to fly to Belgrade from St. Louis. Users have commonly found prices around $956 for the month, but tickets can be as low as $700. Due to multiple factors, prepare for potentially higher prices in June.

What is the cheapest time of day to fly from STL to BEG?

One of the essential ways to save on airfare from St. Louis to Belgrade is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the morning could potentially save you up to 9% on airfare.

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

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

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

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

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

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

$682+ Flights from St. Louis to Belgrade

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Cheap flight deals from St. Louis to Belgrade

Round-trip from	$682 (Lufthansa)
Popular in	June
Cheapest in	February
Average price	$1,013

From Lambert-St Louis to Belgrade Nikola Tesla

Search Deals

Highest demand for flights based on searches. 12% potential increase in price ($139 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($27 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in July 2025

Search Deals

Find flight deals from St. Louis to Belgrade

Cheapest flights from St. Louis to Belgrade
Explore the most affordable flight options available from St. Louis to Belgrade. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 31, 2025.

Wed 12/33:50 pmSTL - BEG

1 stop14h 00mLufthansa

Sun 12/76:15 amBEG - STL

1 stop14h 40mLufthansa

Deal found 7/29

$682

Wed 12/38:30 amSTL - BEG

2 stops21h 20mUnited Airlines

Sun 12/76:15 amBEG - STL

1 stop14h 40mUnited Airlines

Deal found 7/29

$686

Fri 8/83:30 pmSTL - BEG

1 stop14h 25mMultiple Airlines

Fri 8/156:05 amBEG - STL

2 stops20h 40mMultiple Airlines

Deal found 7/31

$1,495

Best flights from St. Louis to Belgrade
Discover carefully curated flight deals from St. Louis to Belgrade that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 31, 2025.

Wed 12/33:50 pmSTL - BEG

1 stop14h 00mLufthansa

Sun 12/76:15 amBEG - STL

1 stop14h 40mLufthansa

Deal found 7/29

$682

Wed 12/38:30 amSTL - BEG

2 stops21h 20mUnited Airlines

Sun 12/76:15 amBEG - STL

1 stop14h 40mUnited Airlines

Deal found 7/29

$686

Last-minute flights from St. Louis to Belgrade
Discover last-minute flight deals from St. Louis to Belgrade. Data last updated July 31, 2025 and is based on user searches.

Fri 8/83:30 pmSTL - BEG

1 stop14h 25mMultiple Airlines

Fri 8/156:05 amBEG - STL

2 stops20h 40mMultiple Airlines

Deal found 7/31

$1,495

Sat 8/95:30 pmSTL - BEG

2 stops35h 45mLufthansa

Sat 8/164:45 pmBEG - STL

1 stop27h 45mLufthansa

Deal found 7/30

$1,425

Sat 8/94:00 pmSTL - BEG

2 stops38h 10mUnited Airlines

Sat 8/161:40 pmBEG - STL

3 stops39h 35mUnited Airlines

Deal found 7/30

$1,490

Fly from

Fly to

Route

Depart

Return

Price

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

$682

St. LouisBelgrade

STL - BEG

STLBEG

Lambert-St Louis

Wed 12/3

8:30 am-12:50 pm

2 stops21h 20m

Belgrade Nikola Tesla

Sun 12/7

6:15 am-1:55 pm

1 stop14h 40m

$686

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

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

Have a flexible travel schedule? Discover the best time to fly to Belgrade 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.

Reviews of airlines servicing Belgrade

Peruse reviews from past customers who have flown with United Airlines and Lufthansa from St. Louis to Belgrade to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

United Airlines

7.4

Good

8,900 reviews

Reviews

1 / 20

4.0

Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

United Airlines

7.4

Good

8,900 reviews

United Airlines

7.4

Good

8,900 reviews

Reviews

1 / 20

4.0

Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Lufthansa

6.8

Okay

7,275 reviews

United Airlines

7.4

Good

8,900 reviews

Reviews

1 / 20

4.0

Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Related info for your journey

What are the cheapest airlines flying from St. Louis to Belgrade round-trip?
Lufthansa, at $682, was found to be the cheapest airline from St. Louis to Belgrade. An alternate airline flying to your destination would be United Airlines. Lufthansa is 28% cheaper than the average price of flights available within the next 90 days to this destination.
Can I find deals for flights from St. Louis to Belgrade that include hotel bookings?
Yes. In addition to deals on St. Louis to Belgrade flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from St. Louis to Belgrade?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Belgrade.
Can I find deals for business class flights from St. Louis to Belgrade?
Yes. Cheapflights offers flight deals from St. Louis to Belgrade 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 Belgrade?
Currently, January is the cheapest month in which you can book a flight from St. Louis to Belgrade (average of $688). Flying from St. Louis to Belgrade in June is currently the most expensive (average of $1,172). 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

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Alternative routes for St. Louis to Belgrade

Kansas City to Belgrade flights

Other flights to Belgrade

Top 4 airlines flying from St. Louis to Belgrade

Airline	Cheapest	Average	Flexibility	On-time
Air Canada	Cheapest$574	Average$1,057	FlexibilityNo cancel fee	On-time67%
Delta	Cheapest$696	Average$765	FlexibilityNo cancel fee	On-timeN/A
KLM	Cheapest$747	Average$865	FlexibilityNo cancel fee	On-time75%
Lufthansa	Cheapest$753	Average$1,122	FlexibilityNo cancel fee	On-time76%

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$682+ Cheap flights from St. Louis (STL) to Belgrade (BEG)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/3. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from St. Louis to Belgrade with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from St. Louis to Belgrade

Round-trip from

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Average price

Find flight deals from St. Louis to Belgrade

Cheapest flights from St. Louis to BelgradeExplore the most affordable flight options available from St. Louis to Belgrade. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 31, 2025.

Explore the most affordable flight options available from St. Louis to Belgrade. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 31, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to Belgrade that are best for you.

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

Have a flexible travel schedule? Discover the best time to fly to Belgrade from St. Louis with our price prediction graph.

Reviews of airlines servicing Belgrade

Peruse reviews from past customers who have flown with United Airlines and Lufthansa from St. Louis to Belgrade to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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

What are the cheapest airlines flying from St. Louis to Belgrade round-trip?

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

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

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

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for St. Louis to Belgrade

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Top 4 airlines flying from St. Louis to Belgrade

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Cheapest flights from St. Louis to Belgrade
Explore the most affordable flight options available from St. Louis to Belgrade. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 31, 2025.