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

Return flights

01 Dec - 07 Dec	ITA Airways
01 Dec - 08 Dec	ITA Airways
31 Dec - 27 Jan	Avianca
31 Dec - 29 Jan	Avianca
05 Dec - 08 Dec	ITA Airways
31 Dec - 28 Jan	Avianca
07 Dec - 29 Jan	Wizz Air Malta
05 Dec - 07 Dec	ITA Airways
02 Dec - 29 Jan	LATAM Airlines Group
31 Dec - 25 Jan	Avianca
02 Dec - 10 Dec	Air France
29 Dec - 29 Jan	Ryanair
29 Dec - 28 Jan	Ryanair
03 Dec - 29 Jan	LATAM Airlines Group
01 Dec - 10 Dec	ITA Airways
31 Dec - 31 Jan	Avianca
08 Dec - 15 Dec	Royal Air Maroc
04 Dec - 16 Dec	Royal Air Maroc
02 Dec - 11 Dec	LATAM Airlines Group
04 Dec - 15 Dec	Royal Air Maroc

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 891€

Return flights