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

Return flights

30 Dec - 20 Jan	Delta
11 Dec - 18 Jan	Delta
28 Dec - 22 Jan	Delta
11 Dec - 15 Jan	Delta
24 Dec - 14 Jan	Delta
26 Dec - 25 Jan	Ethiopian Airlines
10 Dec - 22 Dec	Lufthansa
23 Dec - 13 Jan	Ryanair
22 Dec - 13 Jan	Ryanair
15 Dec - 15 Jan	Delta
11 Dec - 22 Dec	Lufthansa
10 Dec - 20 Dec	Lufthansa
10 Dec - 21 Dec	Lufthansa
11 Dec - 21 Dec	Delta
21 Dec - 13 Jan	Ryanair
24 Dec - 29 Dec	Vueling Airlines
24 Dec - 30 Dec	Vueling Airlines
13 Dec - 25 Dec	Delta
17 Dec - 27 Dec	Iberia
22 Dec - 29 Dec	Lufthansa

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 $1288

Return flights