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

Return flights

01 Dec - 08 Dec	Royal Air Maroc
04 Dec - 08 Dec	Royal Air Maroc
04 Dec - 09 Dec	Royal Air Maroc
02 Dec - 10 Dec	Vueling Airlines
04 Dec - 07 Dec	Ryanair
01 Dec - 10 Dec	Vueling Airlines
01 Dec - 02 Dec	Vueling Airlines
01 Dec - 11 Dec	Vueling Airlines
04 Dec - 10 Dec	Ryanair
02 Dec - 14 Dec	Vueling Airlines
01 Dec - 30 Jan	ITA Airways
04 Dec - 29 Jan	Iberia
08 Dec - 28 Jan	Vueling Airlines
31 Dec - 28 Jan	Iberia
10 Dec - 24 Jan	Vueling Airlines
31 Dec - 25 Jan	Iberia
28 Dec - 28 Jan	Iberia
09 Dec - 26 Jan	Vueling Airlines
31 Dec - 09 Jan	LATAM Airlines Group
15 Dec - 31 Jan	Ryanair

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 $1012

Return flights