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

Return flights

03 Dec - 10 Dec	Condor
05 Dec - 12 Dec	Condor
10 Dec - 17 Dec	FrenchBee
07 Dec - 14 Dec	Porter Airlines (Canada) Ltd
08 Dec - 15 Dec	TAP
02 Dec - 09 Dec	Air Transat
14 Dec - 21 Dec	TAP
01 Dec - 08 Dec	TAP
12 Dec - 19 Dec	FrenchBee
09 Dec - 16 Dec	SWISS
31 Dec - 07 Jan	SWISS
30 Dec - 06 Jan	SWISS
25 Dec - 01 Jan	Air Canada
29 Dec - 05 Jan	Air Canada
17 Dec - 10 Jan	TAP
26 Dec - 02 Jan	Condor
17 Dec - 05 Jan	Air Canada
28 Dec - 04 Jan	Air Canada
27 Dec - 03 Jan	Air Canada
19 Dec - 10 Jan	Air Canada

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

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Montreal to Belgrade in December from $655

Return flights