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

Return flights

29 Aug - 05 Sep	Delta
22 Aug - 05 Sep	Delta
29 Aug - 19 Sep	Delta
20 Aug - 20 Sep	Lufthansa
27 Aug - 10 Sep	Iberia
22 Aug - 13 Sep	Lufthansa
18 Aug - 25 Aug	Lufthansa
18 Aug - 29 Aug	Lufthansa
10 Aug - 22 Aug	Ethiopian Airlines
04 Aug - 31 Aug	Ethiopian Airlines
17 Aug - 31 Aug	Air Europa
02 Aug - 14 Aug	Ethiopian Airlines
02 Aug - 28 Sep	KLM
01 Aug - 24 Aug	KLM

Also check the deals for one-way flights from Brussels to Buenos Aires in August.

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 August from 797€

Return flights