AirHint found the following cheapest return flights from Madrid (MAD) to Buenos Aires (EZE) in October 2026 (see full year).

Return flights

06 Oct - 19 Oct	Air Canada
14 Oct - 21 Oct	Air Canada
07 Oct - 14 Oct	Air Canada
19 Oct - 31 Oct	Lufthansa
19 Oct - 31 Oct	Plus Ultra Lineas Aereas	direct
16 Oct - 31 Oct	Air Canada
01 Oct - 20 Oct	Lufthansa
01 Oct - 15 Oct	Lufthansa
01 Oct - 25 Oct	Lufthansa
01 Oct - 22 Oct	Lufthansa
13 Oct - 02 Nov	Air Europa	direct

Also check the deals for one-way flights from Madrid to Buenos Aires in October.

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 Madrid to Buenos Aires in October from 782€

Return flights