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

Return flights

14 Dec - 02 Jan	Viva	direct
06 Dec - 13 Dec	Viva	direct
19 Dec - 30 Dec	United	direct
23 Dec - 02 Jan	Viva	direct
23 Dec - 11 Jan	Viva	direct
14 Dec - 15 Dec	Viva
19 Dec - 02 Jan	Viva	direct
06 Dec - 12 Dec	Viva
14 Dec - 14 Dec	Viva
23 Dec - 05 Jan	Viva	direct
26 Dec - 02 Jan	Viva	direct
22 Dec - 02 Jan	Viva	direct
26 Dec - 11 Jan	Viva	direct
22 Dec - 11 Jan	Viva	direct
19 Dec - 05 Jan	Viva	direct
06 Dec - 15 Dec	Viva
06 Dec - 14 Dec	Viva
22 Dec - 26 Dec	Aeromexico
14 Dec - 26 Dec	Viva
06 Dec - 26 Dec	Viva

Also check the deals for one-way flights from Monterrey to Houston 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 Houston in December from $232

Return flights