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

Return flights

03 Sep - 17 Sep	Delta	direct
26 Sep - 28 Sep	Delta	direct
05 Sep - 14 Sep	Delta	direct
19 Sep - 26 Sep	Delta	direct
16 Sep - 23 Sep	Delta	direct
06 Sep - 20 Sep	Delta	direct
30 Sep - 01 Oct	Aeromexico	direct
27 Sep - 29 Sep	Aeromexico	direct
22 Sep - 29 Sep	Aeromexico	direct
27 Sep - 28 Sep	Aeromexico	direct
18 Sep - 21 Sep	Delta	direct
24 Sep - 01 Oct	Aeromexico	direct
21 Sep - 03 Oct	Viva
21 Sep - 02 Oct	Viva
21 Sep - 09 Oct	Viva
21 Sep - 04 Oct	Viva
28 Sep - 15 Oct	Viva
28 Sep - 03 Oct	Viva
28 Sep - 17 Oct	Viva
28 Sep - 18 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 161€

Return flights