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

Return flights

03 Dec - 10 Dec	Air Canada
08 Dec - 21 Jan	Air Canada
09 Dec - 21 Jan	Air Canada
09 Dec - 28 Jan	Air Canada
08 Dec - 26 Jan	Air Canada
30 Dec - 27 Jan	Iberia
30 Dec - 22 Jan	Iberia
04 Dec - 21 Jan	Air Canada
08 Dec - 30 Jan	Air Canada
09 Dec - 26 Jan	Lufthansa
05 Dec - 28 Jan	Air Canada
04 Dec - 12 Dec	Iberia
02 Dec - 12 Dec	Iberia
05 Dec - 12 Dec	Iberia
02 Dec - 13 Dec	Iberia
01 Dec - 13 Dec	Iberia
02 Dec - 14 Dec	Iberia
01 Dec - 09 Dec	Iberia
02 Dec - 11 Dec	Iberia
04 Dec - 13 Dec	Iberia

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 784€

Return flights