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

Return flights

04 Dec - 14 Dec	Viva	direct
07 Dec - 14 Dec	Viva	direct
04 Dec - 21 Dec	Viva	direct
04 Dec - 18 Dec	Viva	direct
07 Dec - 21 Dec	Viva	direct
07 Dec - 18 Dec	Viva	direct
04 Dec - 25 Dec	Viva	direct
07 Dec - 25 Dec	Viva	direct
10 Dec - 14 Dec	Viva	direct
12 Dec - 14 Dec	Viva
12 Dec - 01 Jan	Viva
12 Dec - 01 Jan	Viva	direct
31 Dec - 01 Jan	Viva	direct
31 Dec - 17 Jan	Viva
14 Dec - 01 Jan	Viva
14 Dec - 01 Jan	Viva	direct
31 Dec - 17 Jan	Viva	direct
31 Dec - 16 Jan	Viva	direct
31 Dec - 10 Jan	Viva
21 Dec - 01 Jan	Viva	direct

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.

Book a cheap hotel in Mexico City

Cheap car rent in Mexico City

Cheapest return flights from Houston to Mexico City in December from $166

Return flights