St Louis to Belgrade flights

Routavio compares airline fares from several flight booking sites. The lowest one-way fare it found for St Louis to Belgrade is €302 (checked on 24 Oct 2026).

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Lowest observed

€302

Average observed

€573

Cheapest month

January 2027

Last checked

24 Oct 2026

Observed fares. Prices may change.

Your next trip, last seen at €302

Lowest observed

24 Jan 2027

One way

Cheapest observed day · Last checked: 24 Oct 2026

When to fly

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The lowest fare we observed for each month. Open a month to see its days, then pick your outbound and return. A day with no price is one we will search for you.

One-way fare

One-way fare · No data: click and we will search

Lowest observed: €302, departing 24 Jan 2027 (Last checked: 24 Oct 2026)One-way fare · Priced departure days checked in the last 14 days: 18Check live prices for this route
Airlines seen: Aer Lingus, Air Canada, Air France, Air Serbia, Alaska Airlines, Frontier Airlines, Iberia, Icelandair, KLM, Lufthansa, Norse, Norse Atlantic Airways, Ryanair, Swiss, TAP Air Portugal, Turkish Airlines, United Airlines, WestJet, Wizz Air, Wizz Air Malta (20)
Typical journey time: 25h 15m

Short answer

Routavio has seen Aer Lingus fares from St Louis to Belgrade. The lowest fare Routavio's own searches returned is €302, seen on 24 Oct 2026. The average across the fares we caught is €573. January 2027 is the cheapest month in our observations, at €302. These are prices Routavio's searches returned on the dates shown, not quotes; run a live search for today's fare.

About this route

Explore the fares we observed from St Louis to Belgrade. Prices move often, so pick your dates to see the latest options.

Route distance: 8,436 km
Typical journey time: 25h 15m
Seen on fares with a connection: Air Canada, Frontier Airlines, Lufthansa, United Airlines, Air Serbia, Alaska Airlines, Aer Lingus, Icelandair, KLM, Wizz Air, Ryanair, Norse, Swiss (13)
Alternative airports: SUS

Route-level information; individual journeys vary.
We have not observed non-stop service on this route; the fares shown include at least one stop.

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Observed, not guaranteed

Every price is a fare we actually saw, and it may change at any time.

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The price is final on the provider's site, where your booking is completed.

How our prices work

Airport to city: straight-line distance

St. Louis Lambert International Airport (STL) → St Louis, city gazetteer reference point (38.6270, -90.1994): ≈ 20 km.
Belgrade Nikola Tesla (BEG) → Belgrade, city gazetteer reference point (44.7866, 20.4489): ≈ 12 km.

Approximate distances calculated from coordinates, not road distances or travel times. These airports serve the city; they are not confirmed endpoints of an offer.

Lowest fare by day of the week

Cheapest day of the week from St Louis to Belgrade: Saturday, from €317 (checked 24 Oct 2026).

Lowest fare by day of the week
Day	Lowest fare	Priced days
Thursday	€347	3
Friday	€347	3
Saturday	€317	5

One-way fares checked in the last 14 days. Each figure is the lowest priced departure day we saw, not a guaranteed fare.

Lowest one-way fare we saw per airline

Cheapest airline from St Louis to Belgrade: Lufthansa, from €309 (checked 24 Oct 2026).

Lowest one-way fare we saw per airline
Airline	Lowest fare	Priced days
Lufthansa	€309Jan 24, 2027	7
Air Canada	€380Jan 19, 2027	14
Frontier Airlines	€396Dec 5, 2026	16
Icelandair	€398Dec 7, 2026	7
Air Serbia	€478Jan 11, 2027	3
KLM	€494Nov 17, 2026	4
Alaska Airlines	€506Nov 10, 2026	5
United Airlines	€511Nov 15, 2026	9
Aer Lingus	€577Nov 3, 2026	6

One-way fares checked in the last 14 days. An airline listed here had a fare on at least 3 departure days. Each figure is the lowest we saw, not a guaranteed fare. Connecting itineraries are included; the date is the departure day of that fare.

Frequently asked

How much is a flight from St Louis to Belgrade?

The lowest fare Routavio has observed is €302, found on 24 Oct 2026. Prices move, so read it as a floor rather than a quote.

When is the cheapest month to fly from St Louis to Belgrade?

In our observations January 2027 is the cheapest month so far, at €302.

Are there direct flights from St Louis to Belgrade?

Our data holds no non-stop flight from St Louis to Belgrade. The fares on this page include at least one stop.

Which airlines fly from St Louis to Belgrade?

Routavio has seen these carriers on the route: Aer Lingus, Air Canada, Air France, Air Serbia, Alaska Airlines, Frontier Airlines, Iberia, Icelandair, KLM, Lufthansa, Norse, Norse Atlantic Airways, Ryanair, Swiss, TAP Air Portugal, Turkish Airlines, United Airlines, WestJet, Wizz Air, Wizz Air Malta (20).

How long does the flight from St Louis to Belgrade take?

Across the 84 fares Routavio observed, the average journey time is 32h 12m, including any stops. Individual departures vary; the fastest observed flight is listed in the route facts above.

How many of the observed St Louis to Belgrade fares were non-stop?

None of the 85 fares we observed was non-stop; every one included at least one stop. That describes our observations, not every flight that operates.

Which day of the week is cheapest from St Louis to Belgrade?

Cheapest day of the week from St Louis to Belgrade: Saturday, from €317 (checked 24 Oct 2026).

Which airline has the lowest fare from St Louis to Belgrade?

Cheapest airline from St Louis to Belgrade: Lufthansa, from €309 (checked 24 Oct 2026).

How observed prices work, what "No data" means and what a fare includes: Read the flight price guide