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

Return flights

09 Dec - 16 Dec	Air France
10 Dec - 17 Dec	KLM
27 Dec - 19 Jan	Lufthansa
26 Dec - 19 Jan	British Airways
25 Dec - 19 Jan	Lufthansa
25 Dec - 18 Jan	Air Canada
08 Dec - 28 Dec	British Airways
11 Dec - 18 Dec	Air Transat
15 Dec - 22 Dec	KLM
16 Dec - 23 Dec	British Airways
07 Dec - 27 Dec	TAP
31 Dec - 07 Jan	FrenchBee
14 Dec - 21 Dec	Porter Airlines (Canada) Ltd
30 Dec - 06 Jan	British Airways
13 Dec - 20 Dec	Air France
12 Dec - 19 Dec	FrenchBee
12 Dec - 09 Jan	Air Transat
29 Dec - 05 Jan	Azores Airlines
25 Dec - 01 Jan	Air France
28 Dec - 04 Jan	TAP

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 $673

Return flights