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

Return flights

31 Dec - 21 Jan	Viva
06 Dec - 12 Dec	Volaris	direct
02 Dec - 06 Dec	Volaris	direct
31 Dec - 15 Jan	Viva
07 Dec - 11 Dec	Viva
06 Dec - 09 Dec	Volaris	direct
31 Dec - 14 Jan	Viva
30 Dec - 15 Jan	Viva
06 Dec - 13 Dec	Volaris	direct
24 Dec - 14 Jan	Viva
29 Dec - 15 Jan	Viva
30 Dec - 14 Jan	Viva
07 Dec - 10 Dec	Viva
04 Dec - 11 Dec	Viva	direct
29 Dec - 14 Jan	Viva
04 Dec - 09 Dec	Viva	direct
05 Dec - 09 Dec	Viva
05 Dec - 11 Dec	Viva
27 Dec - 15 Jan	Viva
27 Dec - 14 Jan	Viva

Also check the deals for one-way flights from Houston to Mexico City 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 Mexico City in December from 211€

Return flights