KLM Cheap Flights from St. Louis to Belgrade

View €513 flight on Fri, 28 Nov 2025Opens in a new window
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Prices were available within the past 7 days and start at €513 for one-way flights and €1,783 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

KLM
Fri, 12 Dec - Mon, 5 Jan
STL
St. Louis
BEG
Belgrade
€1,783 Return, found 5 hours ago
€1,783
Return
found 5 hours ago
Select KLM flight, departing Fri, 12 Dec from St. Louis to Belgrade, returning Mon, 5 Jan, priced at €1,783 found 5 hours ago
St. Louis to Belgrade route information
Origin airport
Lambert-St. Louis Intl.
Destination airport
Nikola Tesla
Distance
8375 km

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 €1,783 from STL to BEG by organising your results from "Price (lowest to highest)" on Expedia. Or search for bargains from €513 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."
*Available to Expedia members.