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

Return flights

07 Sep - 26 Sep	Viva
07 Sep - 19 Sep	Viva
02 Sep - 09 Sep	Alaska Airlines
21 Sep - 30 Sep	Air Canada
14 Sep - 23 Sep	Air Canada
25 Sep - 09 Oct	Volaris
02 Sep - 11 Sep	Alaska Airlines
07 Sep - 21 Sep	Viva
07 Sep - 22 Sep	Viva
08 Sep - 22 Sep	Viva
30 Sep - 30 Oct	Iberia
28 Sep - 09 Oct	Iberia
23 Sep - 02 Oct	Iberia
07 Sep - 20 Sep	Viva
21 Sep - 14 Oct	Air Canada
21 Sep - 07 Oct	Air Canada
08 Sep - 06 Oct	Viva
25 Sep - 05 Oct	Viva
09 Sep - 30 Oct	Iberia
23 Sep - 14 Oct	Iberia

Also check the deals for one-way flights from Monterrey to Madrid 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 Monterrey to Madrid in September from 685€

Return flights