KLM Cheap Flights from St. Louis to Belgrade

View €501 flight on Mon, 13 Apr 2026Opens in a new window

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Prices were available within the past 7 days and start at €501 for one-way flights and €1,243 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

KLM
Thu, 2 Apr - Mon, 6 Apr
STL
St. Louis
BEG
Belgrade
€1,243 Return, found 6 days ago
€1,243
Return
found 6 days ago
Select KLM flight, departing Thu, 2 Apr from St. Louis to Belgrade, returning Mon, 6 Apr, priced at €1,243 found 6 days ago
KLM
Thu, 2 Apr - Mon, 6 Apr
STL
St. Louis
BEG
Belgrade
€1,248 Return, found 6 days ago
€1,248
Return
found 6 days ago
Select KLM flight, departing Thu, 2 Apr from St. Louis to Belgrade, returning Mon, 6 Apr, priced at €1,248 found 6 days ago
KLM
Thu, 2 Apr - Mon, 6 Apr
STL
St. Louis
BEG
Belgrade
€1,276 Return, found 6 days ago
€1,276
Return
found 6 days ago
Select KLM flight, departing Thu, 2 Apr from St. Louis to Belgrade, returning Mon, 6 Apr, priced at €1,276 found 6 days ago
KLM
Thu, 2 Apr - Mon, 6 Apr
STL
St. Louis
BEG
Belgrade
€1,299 Return, found 6 days ago
€1,299
Return
found 6 days ago
Select KLM flight, departing Thu, 2 Apr from St. Louis to Belgrade, returning Mon, 6 Apr, priced at €1,299 found 6 days ago

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

February is typically the cheapest month to fly

From €484 - €1,421 per traveller.

Frequently asked questions

How much is a KLM flight from Lambert-St. Louis Intl. Airport (STL) to Nikola Tesla Airport (BEG)?
You'll discover affordable return KLM flights from €1,243 from STL to BEG by organising your results from "Price (lowest to highest)" on Expedia. Or search for bargains from €501 for a one-way trip.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from STL to BEG with KLM?
February is one of the cheapest months to jet off to Belgrade with KLM. You could also find excellent prices on one-way and return fares in January.
Does KLM fly nonstop from Lambert-St. Louis Intl. Airport (STL) to Nikola Tesla Airport (BEG)?
To see if there's a direct trip from STL to BEG with KLM or another carrier, use our "Nonstop" filter when looking for tickets.
What airports does KLM fly into in Belgrade?
Nikola Tesla Airport (BEG) is the primary Belgrade hub for KLM flights from Lambert-St. Louis Intl. Airport (STL).
Can I change or cancel my KLM flight from Lambert-St. Louis Intl. Airport (STL) to Nikola Tesla Airport (BEG)?
Depending on your fare type, a fee typically applies if you change or cancel your flight more than 24 hours after confirmation. To find flexible fares, select our "Changes included" or "No cancel fee" filter when you look for flights. For more information on modifying or cancelling your reservation, go to "Trips," select your flight and tick "Manage Booking."

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
Nikola Tesla
Distance
8375 km

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