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

Return flights

03 Dec - 10 Dec	ITA Airways
09 Dec - 30 Dec	Delta
09 Dec - 15 Jan	Delta
10 Dec - 15 Jan	Delta
01 Dec - 16 Dec	Ryanair
01 Dec - 18 Dec	Lufthansa
03 Dec - 14 Dec	ITA Airways
06 Dec - 15 Dec	ITA Airways
05 Dec - 15 Dec	ITA Airways
02 Dec - 27 Jan	Ryanair
08 Dec - 22 Dec	ITA Airways
14 Dec - 23 Jan	Delta
10 Dec - 25 Dec	Ryanair
04 Dec - 31 Dec	Turkish Airlines
29 Dec - 16 Jan	Ethiopian Airlines
28 Dec - 12 Jan	Delta
04 Dec - 15 Jan	British Airways
05 Dec - 12 Jan	ITA Airways
29 Dec - 11 Jan	Ethiopian Airlines
24 Dec - 16 Jan	Ethiopian Airlines

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 856€

Return flights