AirHint found the following cheapest return flights from Madrid (MAD) to Buenos Aires (EZE) in October 2025 (see full year).

Return flights

27 Oct - 16 Nov	Delta
27 Oct - 06 Nov	Delta
27 Oct - 17 Nov	Delta
27 Oct - 13 Nov	Delta
28 Oct - 26 Nov	Delta
27 Oct - 24 Nov	Delta
28 Oct - 25 Nov	Delta
29 Oct - 26 Nov	Delta
29 Oct - 06 Nov	Delta
04 Oct - 26 Oct	Ethiopian Airlines
29 Oct - 09 Nov	Delta
01 Oct - 08 Oct	American Airlines
09 Oct - 18 Oct	American Airlines
24 Oct - 31 Oct	Avianca
26 Oct - 29 Oct	Delta
20 Oct - 29 Oct	Air Canada
20 Oct - 27 Oct	Air Canada
05 Oct - 19 Oct	Avianca
26 Oct - 30 Oct	Avianca
05 Oct - 18 Oct	Avianca

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 744€

Return flights