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

Return flights

03 Dec - 10 Dec	FrenchBee
05 Dec - 12 Dec	FrenchBee
06 Dec - 13 Dec	Air Transat
02 Dec - 09 Dec	Porter Airlines (Canada) Ltd
04 Dec - 11 Dec	Air Transat
07 Dec - 14 Dec	FrenchBee
08 Dec - 15 Dec	Azores Airlines
05 Dec - 16 Dec	FrenchBee
03 Dec - 05 Dec	FrenchBee
01 Dec - 08 Dec	Azores Airlines
25 Dec - 09 Jan	Porter Airlines (Canada) Ltd
30 Dec - 06 Jan	FrenchBee
12 Dec - 09 Jan	Porter Airlines (Canada) Ltd
31 Dec - 07 Jan	FrenchBee
20 Dec - 09 Jan	Azores Airlines
29 Dec - 05 Jan	Porter Airlines (Canada) Ltd
28 Dec - 04 Jan	FrenchBee
26 Dec - 02 Jan	FrenchBee
25 Dec - 01 Jan	Air Transat
15 Dec - 02 Jan	Azores Airlines

Also check the deals for one-way flights from Montreal to Warsaw 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 Warsaw in December from $666

Return flights