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

Return flights

20 Sep - 24 Sep	Viva	direct
20 Sep - 23 Sep	Viva	direct
27 Sep - 14 Oct	Viva
26 Sep - 14 Oct	Viva	direct
24 Sep - 14 Oct	Viva	direct
25 Sep - 29 Sep	Volaris	direct
24 Sep - 26 Sep	Volaris	direct
27 Sep - 08 Oct	Viva
26 Sep - 08 Oct	Viva	direct
26 Sep - 15 Oct	Viva	direct
26 Sep - 16 Oct	Viva	direct
26 Sep - 01 Oct	Viva	direct
26 Sep - 07 Oct	Viva	direct
26 Sep - 03 Oct	Viva	direct
26 Sep - 26 Sep	Viva	direct
26 Sep - 29 Sep	Viva
24 Sep - 29 Sep	Viva
23 Sep - 30 Sep	Volaris	direct
27 Sep - 29 Sep	Volaris	direct
27 Sep - 29 Sep	Viva

Also check the deals for one-way flights from Mexico City to Houston 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 Mexico City to Houston in September from $175

Return flights