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

Return flights

04 Dec - 14 Dec	Viva	direct
11 Dec - 14 Dec	Viva	direct
11 Dec - 13 Dec	Viva	direct
10 Dec - 13 Dec	Viva	direct
10 Dec - 11 Dec	Viva	direct
04 Dec - 11 Dec	Viva	direct
04 Dec - 08 Dec	Viva	direct
11 Dec - 15 Dec	Viva	direct
12 Dec - 15 Dec	Viva	direct
13 Dec - 14 Dec	Viva	direct
31 Dec - 19 Jan	Viva
29 Dec - 19 Jan	Viva
31 Dec - 18 Jan	Viva	direct
31 Dec - 19 Jan	Viva	direct
31 Dec - 17 Jan	Viva
29 Dec - 18 Jan	Viva	direct
29 Dec - 19 Jan	Viva	direct
29 Dec - 17 Jan	Viva
31 Dec - 17 Jan	Viva	direct
29 Dec - 17 Jan	Viva	direct

Also check the deals for one-way flights from Houston 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 Houston to Monterrey in December from $220

Return flights