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

Return flights

29 Oct - 16 Nov	Delta
27 Oct - 08 Nov	Delta
27 Oct - 19 Nov	Delta
29 Oct - 25 Nov	Delta
29 Oct - 17 Nov	Delta
29 Oct - 18 Nov	Delta
29 Oct - 09 Nov	Delta
27 Oct - 09 Nov	Delta
27 Oct - 02 Nov	Delta
31 Oct - 21 Nov	Delta
27 Oct - 29 Oct	Delta
12 Oct - 27 Oct	Delta
29 Oct - 31 Oct	Avianca
26 Oct - 30 Oct	Delta
20 Oct - 27 Oct	Avianca
11 Oct - 19 Oct	Ryanair
12 Oct - 29 Oct	Delta
08 Oct - 16 Oct	Delta
23 Oct - 29 Oct	Delta
20 Oct - 29 Oct	Delta

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