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

Return flights

05 Dec - 10 Dec	Air Canada
10 Dec - 31 Dec	Air Canada
03 Dec - 09 Dec	Delta
10 Dec - 20 Jan	American Airlines
09 Dec - 29 Jan	Delta
03 Dec - 07 Dec	Delta
04 Dec - 08 Dec	Air Canada
01 Dec - 07 Dec	Delta
05 Dec - 29 Jan	Delta
03 Dec - 28 Jan	Delta
09 Dec - 24 Dec	Delta
29 Dec - 29 Jan	Delta
31 Dec - 30 Jan	Delta
31 Dec - 27 Jan	Iberia
02 Dec - 08 Dec	Delta
09 Dec - 28 Jan	Delta
04 Dec - 11 Dec	Iberia
03 Dec - 10 Dec	Iberia
02 Dec - 29 Jan	Delta
29 Dec - 30 Jan	Delta

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

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 December from 652€

Return flights