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

Return flights

20 Oct - 31 Oct	TAP
06 Oct - 20 Oct	Ryanair
06 Oct - 16 Oct	Ryanair
06 Oct - 18 Oct	Ryanair
06 Oct - 21 Oct	Ryanair
25 Oct - 22 Nov	Ryanair
06 Oct - 13 Oct	Ryanair
07 Oct - 19 Oct	TAP
06 Oct - 23 Oct	Ryanair
17 Oct - 19 Oct	TAP
10 Oct - 19 Oct	TAP
14 Oct - 15 Nov	TAP
15 Oct - 15 Nov	TAP
29 Oct - 15 Nov	Iberia
26 Oct - 29 Nov	TAP
09 Oct - 28 Nov	TAP
16 Oct - 01 Nov	Ryanair
18 Oct - 15 Nov	TAP
22 Oct - 14 Nov	Iberia
20 Oct - 12 Nov	TAP

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 $975

Return flights