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

Return flights

15 Dec - 08 Jan	Viva
15 Dec - 15 Dec	Volaris
08 Dec - 12 Dec	Viva
19 Dec - 31 Dec	United
15 Dec - 15 Dec	Air Canada	direct
31 Dec - 07 Jan	United
25 Dec - 04 Jan	United
21 Dec - 27 Dec	Delta
16 Dec - 28 Dec	Delta
22 Dec - 28 Dec	United
08 Dec - 12 Dec	Air Canada	direct
16 Dec - 28 Dec	Air Canada	direct
22 Dec - 28 Dec	Air Canada	direct
25 Dec - 04 Jan	Air Canada	direct

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.

Book a cheap hotel in Toronto

Cheap car rent in Toronto

Cheapest return flights from Monterrey to Toronto in December from $404

Return flights