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

Return flights

27 Sep - 06 Oct	Viva
27 Sep - 14 Oct	Viva
15 Sep - 25 Sep	Viva
26 Sep - 23 Oct	Viva
26 Sep - 14 Oct	Viva
29 Sep - 08 Oct	Iberia
30 Sep - 08 Oct	Iberia
22 Sep - 14 Oct	Viva
30 Sep - 16 Oct	Iberia
27 Sep - 04 Oct	Viva
30 Sep - 07 Oct	Finnair
22 Sep - 29 Sep	Viva
19 Sep - 22 Sep	Viva
22 Sep - 26 Sep	Viva
22 Sep - 30 Sep	Viva
23 Sep - 26 Sep	Viva
25 Sep - 30 Sep	Alaska Airlines
22 Sep - 25 Sep	Viva
19 Sep - 29 Sep	Viva
19 Sep - 26 Sep	Viva

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 $800

Return flights