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

Return flights

02 Dec - 09 Dec	Delta
03 Dec - 09 Dec	Delta
06 Dec - 29 Jan	Delta
08 Dec - 21 Jan	Air Canada
29 Dec - 29 Jan	Delta
05 Dec - 08 Dec	Delta
03 Dec - 07 Dec	Delta
06 Dec - 09 Dec	Delta
02 Dec - 07 Dec	Delta
05 Dec - 09 Dec	Delta
03 Dec - 08 Dec	Delta
04 Dec - 10 Dec	ITA Airways
04 Dec - 09 Dec	ITA Airways
11 Dec - 25 Jan	Air Canada
11 Dec - 21 Jan	Air Canada
11 Dec - 28 Jan	Air Canada
09 Dec - 26 Jan	Delta
07 Dec - 26 Jan	Delta
08 Dec - 27 Jan	Delta
08 Dec - 24 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 792€

Return flights