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

Return flights

02 Dec - 09 Dec	Viva	direct
02 Dec - 05 Dec	Viva	direct
02 Dec - 07 Dec	Viva	direct
05 Dec - 09 Dec	Viva	direct
05 Dec - 07 Dec	Viva	direct
02 Dec - 14 Dec	Viva	direct
05 Dec - 14 Dec	Viva	direct
07 Dec - 09 Dec	Viva	direct
12 Dec - 14 Dec	Viva	direct
09 Dec - 14 Dec	Viva	direct
16 Dec - 05 Jan	Viva	direct
17 Dec - 05 Jan	Viva	direct
17 Dec - 06 Jan	Viva	direct
15 Dec - 02 Jan	Viva	direct
21 Dec - 01 Jan	United	direct
20 Dec - 01 Jan	United	direct
31 Dec - 07 Jan	United	direct
29 Dec - 16 Jan	Viva
29 Dec - 15 Jan	Viva
17 Dec - 07 Jan	Viva	direct

Also check the deals for one-way flights from Mexico City 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 Mexico City to Houston in December from $174

Return flights