Cheapest one-way flights from Chicago to Belgrade in December from $266

AirHint found the following cheapest one-way flights from Chicago (ORD) to Belgrade (BEG) in December 2025 (see full year).

One-Way flights

06 Dec Frontier Airlines
06 Dec Air Serbia direct
20 Dec jetBlue direct

Also check the deals for return flights from Chicago to Belgrade in December.

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