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

Return flights

31 Dec - 06 Jan	Mexicana	direct
31 Dec - 01 Jan	Mexicana	direct
25 Dec - 31 Dec	Aeromexico	direct
24 Dec - 14 Jan	Viva
24 Dec - 12 Jan	Viva
31 Dec - 21 Jan	Viva	direct
31 Dec - 20 Jan	Viva	direct
31 Dec - 14 Jan	Viva
31 Dec - 12 Jan	Viva
24 Dec - 13 Jan	Viva	direct
24 Dec - 14 Jan	Viva	direct
15 Dec - 31 Dec	Viva	direct
13 Dec - 31 Dec	Viva	direct
11 Dec - 31 Dec	Viva	direct
11 Dec - 15 Dec	Viva	direct
14 Dec - 31 Dec	Viva	direct
13 Dec - 15 Dec	Viva	direct
31 Dec - 31 Dec	Viva	direct
13 Dec - 13 Dec	Mexicana	direct
17 Dec - 31 Dec	Viva	direct

Also check the deals for one-way flights from Mexico City to Monterrey 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 Mexico City to Monterrey in December from $81

Return flights