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

Return flights

04 Dec - 07 Dec	Air Canada
02 Dec - 07 Dec	Air Canada
02 Dec - 24 Jan	Air Canada
08 Dec - 29 Jan	Delta
10 Dec - 29 Jan	Delta
03 Dec - 29 Jan	Delta
10 Dec - 24 Dec	Delta
08 Dec - 24 Dec	Delta
10 Dec - 19 Jan	Delta
08 Dec - 26 Jan	Delta
10 Dec - 27 Jan	Delta
08 Dec - 19 Jan	Delta
07 Dec - 24 Jan	Delta
01 Dec - 07 Dec	Delta
02 Dec - 11 Dec	Air France
09 Dec - 19 Jan	Delta
02 Dec - 24 Dec	Delta
06 Dec - 09 Dec	Delta
01 Dec - 04 Dec	Delta
07 Dec - 27 Dec	Delta

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 730€

Return flights