Cheap flights from St Louis to Belgrade from $617 STL → BEG
Lambert-St. Louis International Airport (STL) → Belgrad Nikola Tesla Airport (BEG)
The cheapest return found recently is $1,150 with United Airlines, 10 Dec – 8 Jan 2027, found today. The cheapest one-way found recently is $617 with Lufthansa, 13 Jan 2027, found today.
- Cheapest one-way found recently
- $617, found today
- Cheapest return found recently
- $1,150, 10 Dec to 8 Jan 2027
- Usual return price
- $967 to $1,091
- Cheapest month to fly
- January 2027, return fares from $902 found in the last 7 days
Return
The cheapest return fare on each of 3 departure dates is usually $967 to $1,091.
Cheapest return found recently
$1,150
10 Dec – 8 Jan 2027 · United Airlines
Lambert-St. Louis International Airport (STL) → Belgrad Nikola Tesla Airport (BEG)
Leaves 11:05 a.m. · Return leaves 6:15 a.m. · 33 h 15 min of travel, both ways together
out 2 stops, back 1 stop
found today
Cheapest nonstop return
None seen yet.
Found recently, and the cheapest we hold
$1,150 10 Dec – 8 Jan 2027found todaySee prices for these dates
$902 13 Jan 2027 – 18 Jan 2027found 3 days agoSee prices for these dates
What have prices looked like?
Over 19 days, 22 Oct to 12 Nov, the cheapest return we saw each day was $855 to $902.
At $1,150, the cheapest return found recently is above that range.
19 days is a short history, so treat this range as an early guide.
Those were the prices on those days, not today's.
Is this a good return price?
Compared with the cheapest return fare on each of 3 departure dates from 5 Dec to 13 Jan 2027, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.
Could nearby dates be cheaper?
We hold no other 29-night return fares leaving within 3 days of 10 Dec to compare.
Every date we hold
3 fares on 3 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 5 Dec – 22 Jan 2027 | $1,031 | United Airlines | Lambert-St. Louis International Airport (STL) → Belgrad Nikola Tesla Airport (BEG) | out 2 stops, back 2 stops | found 2 days ago | See prices for these dates |
| 10 Dec – 8 Jan 2027 | $1,150 | United Airlines | Lambert-St. Louis International Airport (STL) → Belgrad Nikola Tesla Airport (BEG) | out 2 stops, back 1 stop | found today | See prices for these dates |
| 13 Jan 2027 – 18 Jan 2027 | $902 | United Airlines | Lambert-St. Louis International Airport (STL) → Belgrad Nikola Tesla Airport (BEG) | out 2 stops, back 2 stops | found 3 days ago | See prices for these dates |
Which month looks cheapest?
January 2027 is the cheapest month — from $902.
Airlines on the cheapest dates: United Airlines.
One-way
Not enough comparable prices yet for a usual one-way price.
Cheapest one-way found recently
$617
13 Jan 2027 · Lufthansa
Lambert-St. Louis International Airport (STL) → Belgrad Nikola Tesla Airport (BEG)
Leaves 3:40 p.m. · 14 h 10 min trip
1 stop
found today
Cheapest nonstop one-way
None seen yet.
Found recently, and the cheapest we hold
$617 13 Jan 2027found todayOpen this trip
$349 3 Aug 2027found 3 days agoOpen this trip
What have prices looked like?
Over 9 days, 4 Oct to 12 Nov, the cheapest one-way we saw each day was $349 to $638.
9 days is a short history, so treat this range as an early guide.
Those were the prices on those days, not today's.
Is this a good one-way price?
Not enough comparable prices yet: we hold one-way fares on 2 departure dates and need at least 3 to say what is usual.
Could nearby dates be cheaper?
We hold no other one-way fares leaving within 3 days of 13 Jan 2027 to compare.
Every date we hold
3 fares on 2 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 13 Jan 2027 | $580 | Frontier Airlines | Lambert-St. Louis International Airport (STL) → Belgrad Nikola Tesla Airport (BEG) | 3 stops | found 3 days ago | Open this trip |
| 3 Aug 2027 | $349 | United Airlines | Lambert-St. Louis International Airport (STL) → Belgrad Nikola Tesla Airport (BEG) | 2 stops | found 3 days ago | Open this trip |
Which month looks cheapest?
August 2027 is the cheapest month — from $349.
Airlines on the cheapest dates: Frontier Airlines, United Airlines.
Premium cabin fares from St Louis to Belgrade
We hold no premium economy, business or first-class fares for this route: we collect them for the busiest routes, and this one is not among them yet.
Today's prices for 10 Dec – 8 Jan 2027 in another cabin: Premium economy · Business · First
Today's prices for 13 Jan 2027 in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for St Louis to Belgrade?
Return
Not enough history yet: in 19 days of return prices, 22 Oct to 12 Nov, fewer than 3 booking ranges had prices on 7 days or more.
One-way
Not enough history yet: in 9 days of one-way prices, 4 Oct to 12 Nov, fewer than 3 booking ranges had prices on 7 days or more.
Live price for these dates
The cheapest return found recently is for 10 Dec – 8 Jan 2027. A live search on this page shows what those dates cost now, for one adult in economy.
Questions about this trip
How much is a return flight from St Louis to Belgrade?
The cheapest return found recently is $1,150 with United Airlines, 10 Dec to 8 Jan 2027, found today. The cheapest return we hold, of any age, is $902 with United Airlines, 13 Jan 2027 to 18 Jan 2027, found 3 days ago. The cheapest return fare on each of 3 departure dates is usually $967 to $1,091.
How much is a one-way flight from St Louis to Belgrade?
The cheapest one-way found recently is $617 with Lufthansa, 13 Jan 2027, found today. The cheapest one-way we hold, of any age, is $349 with United Airlines, 3 Aug 2027, found 3 days ago.
What is the cheapest month to fly from St Louis to Belgrade?
January 2027 is the cheapest month for a return, from $902, 13 Jan 2027 to 18 Jan 2027, found 3 days ago. August 2027 is the cheapest month for a one-way, from $349, 3 Aug 2027, found 3 days ago.
How long is the flight from St Louis to Belgrade?
The cheapest one-way found recently, with Lufthansa on 13 Jan 2027, takes 14 h 10 min with 1 stop.
Which airlines have the cheapest flights from St Louis to Belgrade?
Between 5 Dec and 13 Jan 2027, United Airlines has the cheapest return on all 3 departure dates we hold.
Prices are what travelers' searches on Aviasales found in the last 7 days, in US dollars: the price the seller showed on Aviasales; bags may cost extra. Fares change, so check today's price before you book. How our prices work