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

Return flights

01 Sep - 08 Sep	Volaris	direct
11 Sep - 13 Sep	Aeromexico	direct
11 Sep - 14 Sep	Aeromexico	direct
14 Sep - 21 Sep	Aeromexico	direct
10 Sep - 14 Sep	Aeromexico	direct
22 Sep - 28 Sep	Viva
22 Sep - 05 Oct	Viva
01 Sep - 21 Sep	Viva
21 Sep - 21 Sep	Viva	direct
14 Sep - 28 Sep	Viva
21 Sep - 28 Sep	Viva
14 Sep - 05 Oct	Viva
21 Sep - 05 Oct	Viva
19 Sep - 05 Oct	Viva
27 Sep - 05 Oct	Viva
26 Sep - 05 Oct	Viva
25 Sep - 05 Oct	Viva
22 Sep - 13 Oct	Viva
22 Sep - 12 Oct	Viva
24 Sep - 05 Oct	Viva

Also check the deals for one-way flights from Houston to Mexico City in September.

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 September from $190

Return flights