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	Ethiopian Airlines
04 Dec - 13 Dec	Ethiopian Airlines
05 Dec - 13 Dec	Ethiopian Airlines
07 Dec - 11 Dec	Ethiopian Airlines
30 Dec - 14 Jan	Ethiopian Airlines
08 Dec - 21 Jan	Ethiopian Airlines
09 Dec - 16 Dec	Ethiopian Airlines
09 Dec - 13 Jan	Delta
30 Dec - 17 Jan	Ethiopian Airlines
02 Dec - 27 Jan	ITA Airways
15 Dec - 15 Jan	Delta
28 Dec - 18 Jan	Ethiopian Airlines
01 Dec - 15 Dec	ITA Airways
29 Dec - 16 Jan	Ethiopian Airlines
25 Dec - 16 Jan	Delta
28 Dec - 15 Jan	Ethiopian Airlines
14 Dec - 23 Dec	TAP
12 Dec - 19 Dec	Ryanair
15 Dec - 22 Dec	Iberia
17 Dec - 21 Dec	Vueling 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 775€

Return flights