AirHint found the following cheapest return flights from Austin (AUS) to Monterrey (MTY) in August 2025 (see full year).

Return flights

31 Aug - 10 Sep	Viva	direct
31 Aug - 03 Sep	Viva	direct
27 Aug - 10 Sep	Viva	direct
27 Aug - 03 Sep	Viva	direct
31 Aug - 05 Sep	Viva	direct
31 Aug - 15 Sep	Viva	direct
27 Aug - 05 Sep	Viva	direct
27 Aug - 15 Sep	Viva	direct
31 Aug - 17 Sep	Viva	direct
31 Aug - 14 Sep	Viva	direct
27 Aug - 29 Aug	Viva	direct
27 Aug - 31 Aug	Viva	direct
24 Aug - 27 Aug	Viva	direct
20 Aug - 27 Aug	Viva	direct
22 Aug - 27 Aug	Viva	direct
29 Aug - 31 Aug	Viva	direct
24 Aug - 29 Aug	Viva	direct
20 Aug - 29 Aug	Viva	direct
22 Aug - 29 Aug	Viva	direct
24 Aug - 31 Aug	Viva	direct

Also check the deals for one-way flights from Austin to Monterrey in August.

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 Austin to Monterrey in August from 234€

Return flights