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

Return flights

07 Oct - 16 Oct	TUI fly Belgium
14 Oct - 01 Nov	TUI fly Belgium
05 Oct - 20 Oct	Ryanair
20 Oct - 27 Oct	Ryanair
13 Oct - 01 Nov	Ryanair
15 Oct - 01 Nov	Ryanair
31 Oct - 09 Nov	Ryanair
06 Oct - 10 Oct	Ryanair
31 Oct - 01 Nov	Ryanair
17 Oct - 30 Oct	KLM
30 Oct - 23 Nov	LATAM Airlines Group
26 Oct - 08 Nov	LATAM Airlines Group
03 Oct - 31 Oct	Ryanair
11 Oct - 12 Oct	TUI fly Belgium
22 Oct - 02 Nov	LATAM Airlines Group
17 Oct - 02 Nov	LATAM Airlines Group
12 Oct - 26 Oct	Ryanair
22 Oct - 31 Oct	LATAM Airlines Group
25 Oct - 10 Nov	SWISS
21 Oct - 24 Oct	Emirates

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

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 October from 1005€

Return flights