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

Return flights

23 Sep - 23 Sep	Volaris	direct
07 Sep - 14 Sep	Volaris	direct
17 Sep - 20 Oct	Delta	direct
19 Sep - 20 Oct	Delta	direct
17 Sep - 19 Sep	Delta	direct
29 Sep - 06 Oct	Delta	direct
25 Sep - 02 Oct	Delta	direct
24 Sep - 29 Sep	Delta	direct
05 Sep - 14 Sep	Delta	direct
29 Sep - 12 Oct	Delta	direct
30 Sep - 08 Oct	Aeromexico	direct
09 Sep - 22 Sep	Aeromexico	direct
20 Sep - 03 Oct	Aeromexico	direct
19 Sep - 22 Sep	Aeromexico	direct
11 Sep - 14 Sep	Aeromexico	direct
03 Sep - 09 Sep	Aeromexico	direct
15 Sep - 17 Sep	Aeromexico	direct
28 Sep - 05 Oct	Aeromexico	direct
28 Sep - 06 Oct	Viva
28 Sep - 12 Oct	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 139€

Return flights