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

Return flights

18 Oct - 25 Oct	SWISS
06 Oct - 13 Oct	Air Transat
11 Oct - 18 Oct	Air Transat
16 Oct - 23 Oct	Air Transat
13 Oct - 20 Oct	Air Transat
22 Oct - 29 Oct	Air Transat
17 Oct - 24 Oct	Air Transat
08 Oct - 15 Oct	Air Transat
20 Oct - 27 Oct	Air Transat
21 Oct - 28 Oct	British Airways
27 Oct - 03 Nov	British Airways
28 Oct - 04 Nov	British Airways
25 Oct - 01 Nov	SWISS
29 Oct - 05 Nov	SWISS
30 Oct - 06 Nov	Air Canada
31 Oct - 07 Nov	Air Canada

Also check the deals for one-way flights from Montreal to Oslo in October.

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 October from 524€

Return flights