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

Return flights

03 Dec - 10 Dec	ITA Airways
01 Dec - 10 Dec	ITA Airways
06 Dec - 10 Dec	ITA Airways
01 Dec - 11 Dec	ITA Airways
02 Dec - 11 Dec	ITA Airways
04 Dec - 09 Dec	ITA Airways
08 Dec - 22 Jan	Delta
10 Dec - 22 Jan	Delta
08 Dec - 29 Jan	Delta
10 Dec - 27 Jan	Delta
07 Dec - 26 Jan	Delta
24 Dec - 29 Jan	Delta
10 Dec - 29 Jan	Delta
05 Dec - 29 Jan	Delta
08 Dec - 27 Jan	Delta
06 Dec - 27 Jan	Delta
03 Dec - 09 Dec	Delta
05 Dec - 11 Dec	ITA Airways
06 Dec - 24 Dec	Delta
01 Dec - 12 Dec	ITA Airways

Also check the deals for one-way flights from Barcelona 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 Barcelona to Buenos Aires in December from $804

Return flights