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

Return flights

23 Sep - 09 Oct	Viva
21 Sep - 30 Sep	Viva
28 Sep - 14 Oct	Air Canada
14 Sep - 22 Sep	Hawaiian Airlines
21 Sep - 07 Oct	Air Canada
23 Sep - 02 Oct	Iberia
22 Sep - 30 Sep	Viva
25 Sep - 30 Sep	Viva
08 Sep - 23 Sep	Viva
16 Sep - 03 Oct	Finnair
16 Sep - 25 Sep	Finnair
09 Sep - 24 Sep	Viva
20 Sep - 30 Sep	Viva
24 Sep - 03 Oct	Finnair
09 Sep - 23 Sep	Viva
20 Sep - 03 Oct	Finnair
20 Sep - 27 Sep	Volaris
30 Sep - 06 Oct	Aeromexico
29 Sep - 06 Oct	Viva
27 Sep - 09 Oct	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 693€

Return flights