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

Return flights

20 Sep - 28 Sep	Delta	direct
06 Sep - 20 Sep	Delta	direct
13 Sep - 16 Sep	Delta	direct
12 Sep - 20 Sep	Delta	direct
06 Sep - 16 Sep	Delta	direct
11 Sep - 18 Sep	Aeromexico	direct
05 Sep - 12 Sep	Aeromexico	direct
07 Sep - 25 Sep	Viva Aerobus
07 Sep - 22 Sep	Viva Aerobus
07 Sep - 11 Sep	Viva Aerobus
28 Sep - 03 Oct	Viva Aerobus
25 Sep - 03 Oct	Viva Aerobus
21 Sep - 03 Oct	Viva Aerobus
28 Sep - 10 Oct	Viva Aerobus
28 Sep - 15 Oct	Viva Aerobus
28 Sep - 08 Oct	Viva Aerobus
28 Sep - 02 Oct	Viva Aerobus
28 Sep - 06 Oct	Viva Aerobus
28 Sep - 13 Oct	Viva Aerobus
28 Sep - 18 Oct	Viva Aerobus

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 $188

Return flights