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

Return flights

14 Sep - 16 Sep	Viva	direct
02 Sep - 16 Sep	Viva
03 Sep - 16 Sep	Viva
05 Sep - 16 Sep	Viva	direct
01 Sep - 16 Sep	Viva	direct
14 Sep - 21 Sep	Viva	direct
14 Sep - 29 Sep	Viva	direct
14 Sep - 22 Sep	Viva	direct
14 Sep - 05 Oct	Viva	direct
08 Sep - 16 Sep	Viva
09 Sep - 16 Sep	Viva
14 Sep - 03 Oct	Viva	direct
29 Sep - 19 Oct	Viva	direct
29 Sep - 05 Oct	Viva	direct
29 Sep - 10 Oct	Viva	direct
30 Sep - 19 Oct	Viva
30 Sep - 05 Oct	Viva
30 Sep - 10 Oct	Viva
22 Sep - 05 Oct	Viva	direct
22 Sep - 10 Oct	Viva	direct

Also check the deals for one-way flights from Los Angeles 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 Los Angeles to Monterrey in September from $245

Return flights