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

Return flights

12 Oct - 28 Oct	Frontier Airlines
17 Oct - 30 Oct	Frontier Airlines
22 Oct - 07 Nov	Frontier Airlines
03 Oct - 10 Oct	jetBlue
04 Oct - 11 Oct	jetBlue
28 Oct - 04 Nov	United
29 Oct - 14 Nov	Iberia
29 Oct - 06 Nov	Iberia
31 Oct - 07 Nov	United
28 Oct - 08 Nov	Iberia
20 Oct - 15 Nov	Iberia
27 Oct - 22 Nov	Iberia
13 Oct - 08 Nov	Iberia
07 Oct - 01 Nov	Iberia
05 Oct - 25 Oct	jetBlue
08 Oct - 15 Oct	United
22 Oct - 29 Oct	United
14 Oct - 21 Oct	United
10 Oct - 17 Oct	United
16 Oct - 23 Oct	United

Also check the deals for one-way flights from Ontario to Paris 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 Ontario to Paris in October from $734

Return flights