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

Return flights

31 Dec - 21 Jan	Ethiopian Airlines
30 Dec - 21 Jan	Ethiopian Airlines
27 Dec - 30 Jan	Ethiopian Airlines
30 Dec - 20 Jan	Ethiopian Airlines
23 Dec - 27 Dec	Delta
29 Dec - 16 Jan	Turkish Airlines
31 Dec - 12 Jan	Iberia
28 Dec - 09 Jan	Iberia
28 Dec - 06 Jan	Iberia
23 Dec - 09 Jan	Delta
26 Dec - 02 Jan	ITA Airways

Also check the deals for one-way flights from Brussels 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 Brussels to Buenos Aires in December from 778€

Return flights