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

Return flights

24 Oct - 04 Nov	Lufthansa
24 Oct - 15 Nov	Lufthansa
24 Oct - 08 Nov	Lufthansa
24 Oct - 29 Oct	Lufthansa
24 Oct - 03 Nov	Lufthansa
21 Oct - 09 Nov	Lufthansa
24 Oct - 28 Oct	Lufthansa
22 Oct - 29 Oct	Lufthansa
21 Oct - 17 Nov	Lufthansa
21 Oct - 07 Nov	Lufthansa
22 Oct - 09 Nov	Lufthansa
22 Oct - 10 Nov	Lufthansa
22 Oct - 12 Nov	Lufthansa
07 Oct - 22 Oct	Lufthansa
17 Oct - 20 Oct	Lufthansa
21 Oct - 27 Oct	Lufthansa
17 Oct - 19 Oct	Lufthansa
17 Oct - 24 Oct	Lufthansa
24 Oct - 26 Oct	Lufthansa
17 Oct - 21 Oct	Lufthansa

Also check the deals for one-way flights from Paris to Montreal 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 Paris to Montreal in October from $363

Return flights