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

Return flights

03 Dec - 10 Dec	Air Transat
02 Dec - 09 Dec	British Airways
04 Dec - 11 Dec	Air Transat
10 Dec - 17 Dec	Air Transat
07 Dec - 14 Dec	SWISS
01 Dec - 08 Dec	SWISS
06 Dec - 13 Dec	SWISS
08 Dec - 15 Dec	SWISS
05 Dec - 12 Dec	Porter Airlines (Canada) Ltd
09 Dec - 16 Dec	British Airways
31 Dec - 07 Jan	Brussels Airlines
25 Dec - 08 Jan	Air Canada
30 Dec - 06 Jan	Air France
29 Dec - 05 Jan	SWISS
28 Dec - 04 Jan	Air Canada
26 Dec - 02 Jan	KLM
27 Dec - 03 Jan	Lufthansa

Also check the deals for one-way flights from Montreal to Oslo 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 Oslo in December from 564€

Return flights