Cheapest return flights from Ontario to Belgrade in December from $1667

AirHint found the following cheapest return flights from Ontario (ONT) to Belgrade (BEG) in December 2025 (see full year).

Return flights

27 Dec - 17 Jan British Airways
26 Dec - 17 Jan British Airways
27 Dec - 15 Jan British Airways
28 Dec - 16 Jan British Airways
27 Dec - 16 Jan British Airways
26 Dec - 16 Jan British Airways
20 Dec - 08 Jan Alaska Airlines
23 Dec - 03 Jan British Airways

Also check the deals for one-way flights from Ontario to Belgrade in December.

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