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

Return flights

27 Sep - 30 Sep	Viva	direct
27 Sep - 08 Oct	Viva	direct
27 Sep - 05 Oct	Viva	direct
27 Sep - 09 Oct	Viva	direct
27 Sep - 18 Oct	Viva	direct
27 Sep - 12 Oct	Viva	direct
27 Sep - 06 Oct	Viva	direct
27 Sep - 13 Oct	Viva	direct
27 Sep - 07 Oct	Viva	direct
27 Sep - 11 Oct	Viva	direct
27 Sep - 03 Oct	Viva	direct
27 Sep - 29 Sep	Viva	direct
29 Sep - 30 Sep	Viva	direct
23 Sep - 30 Sep	Viva	direct
23 Sep - 27 Sep	Viva	direct
22 Sep - 30 Sep	Viva
22 Sep - 27 Sep	Viva
23 Sep - 25 Sep	Viva	direct
23 Sep - 26 Sep	Viva	direct
21 Sep - 30 Sep	Viva	direct

Also check the deals for one-way flights from Houston to Monterrey 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 Monterrey in September from 182€

Return flights