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

Return flights

07 Dec - 14 Dec	Air Transat
08 Dec - 15 Dec	Air Transat
03 Dec - 10 Dec	FrenchBee
02 Dec - 09 Dec	Air France
01 Dec - 08 Dec	Delta
06 Dec - 13 Dec	Air France
09 Dec - 16 Dec	Air France
10 Dec - 17 Dec	KLM
31 Dec - 07 Jan	SWISS
14 Dec - 21 Dec	British Airways
09 Dec - 19 Dec	SWISS
30 Dec - 06 Jan	SWISS
25 Dec - 01 Jan	Porter Airlines (Canada) Ltd
29 Dec - 05 Jan	SWISS
26 Dec - 02 Jan	KLM
28 Dec - 04 Jan	British Airways
22 Dec - 03 Jan	British Airways
23 Dec - 02 Jan	Air France
20 Dec - 02 Jan	British Airways

Also check the deals for one-way flights from Montreal to Copenhagen 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 Copenhagen in December from $625

Return flights