$446 Cheap Flights from St. Louis (STL) to Belgrade (BEG)

View $446 flight on Wed, Oct 22, 2025Opens in a new window

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Nikola Tesla Airport (BEG)

Cheap Flights from St. Louis to Belgrade (STL-BEG)

Prices were available within the past 7 days and start at $446 for one-way flights and $596 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Wed, Oct 29 - Wed, Nov 19
STL
St. Louis
BEG
Belgrade
$596 Roundtrip, just found
$596
Roundtrip
just found
Select Delta flight, departing Wed, Oct 29 from St. Louis to Belgrade, returning Wed, Nov 19, priced at $596 just found
Air Canada
Wed, Oct 15 - Fri, Nov 7
STL
St. Louis
BEG
Belgrade
$599 Roundtrip, found 23 hours ago
$599
Roundtrip
found 23 hours ago
Select Air Canada flight, departing Wed, Oct 15 from St. Louis to Belgrade, returning Fri, Nov 7, priced at $599 found 23 hours ago
United
Wed, Oct 22 - Wed, Nov 5
STL
St. Louis
BEG
Belgrade
$600 Roundtrip, found 4 hours ago
$600
Roundtrip
found 4 hours ago
Select United flight, departing Wed, Oct 22 from St. Louis to Belgrade, returning Wed, Nov 5, priced at $600 found 4 hours ago
Lufthansa
Wed, Oct 29 - Wed, Nov 19
STL
St. Louis
BEG
Belgrade
$603 Roundtrip, just found
$603
Roundtrip
just found
Select Lufthansa flight, departing Wed, Oct 29 from St. Louis to Belgrade, returning Wed, Nov 19, priced at $603 just found
United
Wed, Oct 29 - Wed, Nov 19
STL
St. Louis
BEG
Belgrade
$603 Roundtrip, just found
$603
Roundtrip
just found
Select United flight, departing Wed, Oct 29 from St. Louis to Belgrade, returning Wed, Nov 19, priced at $603 just found
United
Tue, Nov 11 - Fri, Nov 21
STL
St. Louis
BEG
Belgrade
$604 Roundtrip, just found
$604
Roundtrip
just found
Select United flight, departing Tue, Nov 11 from St. Louis to Belgrade, returning Fri, Nov 21, priced at $604 just found
Air Canada
Mon, Oct 20 - Wed, Nov 5
STL
St. Louis
BEG
Belgrade
$605 Roundtrip, found 1 day ago
$605
Roundtrip
found 1 day ago
Select Air Canada flight, departing Mon, Oct 20 from St. Louis to Belgrade, returning Wed, Nov 5, priced at $605 found 1 day ago
Delta
Wed, Oct 22 - Wed, Nov 5
STL
St. Louis
BEG
Belgrade
$606 Roundtrip, found 4 hours ago
$606
Roundtrip
found 4 hours ago
Select Delta flight, departing Wed, Oct 22 from St. Louis to Belgrade, returning Wed, Nov 5, priced at $606 found 4 hours ago
United
Wed, Oct 29 - Wed, Nov 19
STL
St. Louis
BEG
Belgrade
$607 Roundtrip, just found
$607
Roundtrip
just found
Select United flight, departing Wed, Oct 29 from St. Louis to Belgrade, returning Wed, Nov 19, priced at $607 just found
KLM
Wed, Oct 22 - Wed, Nov 5
STL
St. Louis
BEG
Belgrade
$621 Roundtrip, found 4 hours ago
$621
Roundtrip
found 4 hours ago
Select KLM flight, departing Wed, Oct 22 from St. Louis to Belgrade, returning Wed, Nov 5, priced at $621 found 4 hours ago

Find the cheapest month to fly from St. Louis (STL) to Belgrade (BEG)

November is typically the cheapest month to fly

From $608 - $1,375 per traveler.
Flights from St. Louis (STL) to Belgrade (BEG)
Origin airport
Lambert-St. Louis Intl.
Destination airport
Nikola Tesla
Airlines serving
Air Canada, Air France, Austrian Airlines, Delta, KLM, Lufthansa, Turkish Airlines, United
Roundtrip price
$595
Distance
5234 mi

St. Louis to Belgrade Flights

The cheapest times to fly from St. Louis to Belgrade

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from St. Louis to Belgrade are during the month of October. You can find some of the cheapest flights from St. Louis to Belgrade with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from St. Louis to Belgrade

Sunday is one of the best days to book for cheap flights from St. Louis to Belgrade: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from St. Louis to Belgrade

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from St. Louis to Belgrade in 2025. You can also book with separate airlines for your outbound and return journeys, from $446 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap St. Louis to Belgrade flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your St. Louis to Belgrade airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Nikola Tesla Airport (BEG) cost?
Get a cheap one-way flight from $446 or cheap return flight from $596 from Lambert-St. Louis Intl. Airport (STL) to Nikola Tesla Airport (BEG) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Lambert-St. Louis Intl. Airport (STL) to Nikola Tesla Airport (BEG)?
The cheapest month to fly from STL to BEG is October, when there's less demand. Off-peak season is often when you'll find cheap fares for travel between these airports.
What is the cheapest airline that flies from Lambert-St. Louis Intl. Airport (STL) to Nikola Tesla Airport (BEG)?
To find the cheapest airline flying from STL to BEG, use Expedia's filter tool. Customize your search based on what matters most to you, such as preferred carriers and flight duration. You can then sort your results by "Price (lowest to highest)" to list the most affordable options first.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Nikola Tesla Airport (BEG)?
There aren't any daily nonstop flights departing from Lambert-St. Louis Intl. Airport (STL) to Nikola Tesla Airport (BEG). But you can book flights with layovers. Filter your search on Expedia to include one or two stops, and you'll be on your way in no time at all.
What day of the week has the most flights from STL to BEG?
Typically you'll have the most choice when it comes to flights on a Friday. Tuesdays are often the quietest.* But this can vary based on the season, carrier and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Lambert-St. Louis Intl. Airport (STL) to Nikola Tesla Airport (BEG)?
Opt for a flight from Lambert-St. Louis Intl. Airport (STL) to Nikola Tesla Airport (BEG) that leaves before 3 PM to reduce the risk of delays and cancellations. Departures later than this are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Lambert-St. Louis Intl. Airport (STL) to Nikola Tesla Airport (BEG) last-minute?
Holding off until right before your break to book a flight from STL to BEG generally means paying more. Although you may find some last-minute discounts, there's no guarantee. Keep your travel plans flexible for the best chance of snagging a bargain.
Is it cheaper to book a STL to BEG flight and hotel package?
Compared with arranging flights and hotels separately, booking a STL to BEG flight and hotel package with Expedia could result in significant savings. Better yet, having everything in one easy place will take the hassle out of planning your trip. Just pick your flights and select from our wide range of hotels, then customize your trip with other add-ons like tours and car rentals.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to Nikola Tesla Airport (BEG)?
It's usually possible to reschedule or cancel your STL to BEG flight. However, if it's been more than 24 hours since booking, additional fees may apply. Check your airline's policies in your itinerary to see what changes are allowed and whether any costs are involved. You'll also find more information on our Customer Service portal.

Explore a world of travel with Expedia

*Available to One Key members.