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

Return flights

03 Dec - 10 Dec	United
01 Dec - 12 Dec	Iberia
08 Dec - 15 Dec	United
05 Dec - 16 Dec	Iberia
24 Dec - 17 Jan	Iberia
11 Dec - 15 Dec	Frontier Airlines
11 Dec - 25 Dec	Iberia
04 Dec - 15 Dec	Iberia
10 Dec - 20 Dec	Iberia
13 Dec - 20 Dec	United
29 Dec - 09 Jan	Iberia
11 Dec - 16 Dec	Iberia
24 Dec - 08 Jan	Iberia
25 Dec - 17 Jan	Iberia
29 Dec - 24 Jan	Iberia
15 Dec - 10 Jan	Iberia
17 Dec - 10 Jan	Iberia
27 Dec - 23 Jan	Iberia
29 Dec - 07 Jan	Iberia
24 Dec - 06 Jan	Iberia

Also check the deals for one-way flights from Ontario to Paris 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 Ontario to Paris in December from $940

Return flights