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

Return flights

25 Sep - 28 Sep	Volaris	direct
04 Sep - 07 Sep	Volaris	direct
29 Sep - 06 Oct	Volaris	direct
04 Sep - 08 Sep	Volaris	direct
11 Sep - 15 Sep	Volaris	direct
12 Sep - 14 Sep	Volaris	direct
26 Sep - 29 Sep	Volaris	direct
04 Sep - 17 Sep	Volaris	direct
04 Sep - 11 Oct	Volaris	direct
23 Sep - 29 Sep	Volaris	direct
20 Sep - 29 Sep	Volaris	direct
26 Sep - 01 Oct	Volaris	direct
19 Sep - 22 Sep	Volaris	direct
28 Sep - 07 Oct	Volaris	direct
29 Sep - 19 Oct	Viva
29 Sep - 01 Oct	Viva
29 Sep - 11 Oct	Viva
20 Sep - 01 Oct	Viva
30 Sep - 19 Oct	Viva
12 Sep - 01 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 133€

Return flights