AirHint found the following cheapest return flights from Monterrey (MTY) to Toronto (YYZ) in December 2025 (see full year).

Return flights

25 Dec - 01 Jan	Viva
20 Dec - 30 Dec	Volaris
23 Dec - 30 Dec	Viva
09 Dec - 12 Dec	Volaris
04 Dec - 12 Dec	Viva
08 Dec - 12 Dec	Viva
01 Dec - 12 Dec	Viva
04 Dec - 06 Dec	Volaris
20 Dec - 29 Dec	Viva
15 Dec - 29 Dec	Volaris
02 Dec - 12 Dec	Volaris
29 Dec - 12 Jan	Viva
25 Dec - 04 Jan	Viva
28 Dec - 08 Jan	Volaris
27 Dec - 07 Jan	Volaris
27 Dec - 04 Jan	Volaris
27 Dec - 06 Jan	Volaris
20 Dec - 02 Jan	Volaris
25 Dec - 02 Jan	Viva
29 Dec - 02 Jan	Volaris

Also check the deals for one-way flights from Monterrey to Toronto 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 Monterrey to Toronto in December from $374

Return flights