AirHint found the following cheapest return flights from Sao Paulo (GRU) to Brussels (BRU) in September 2025 (see full year).

Return flights

09 Sep - 17 Sep	Ethiopian Airlines
09 Sep - 24 Sep	Ethiopian Airlines
30 Sep - 20 Oct	British Airways
27 Sep - 06 Oct	British Airways
17 Sep - 03 Oct	Ethiopian Airlines
29 Sep - 06 Oct	British Airways
25 Sep - 06 Oct	British Airways
01 Sep - 07 Sep	Turkish Airlines
23 Sep - 21 Oct	Iberia
24 Sep - 21 Oct	Iberia
29 Sep - 13 Oct	Air Europa
22 Sep - 21 Oct	Iberia
23 Sep - 22 Oct	Iberia
10 Sep - 16 Sep	Copa
02 Sep - 07 Sep	Copa
16 Sep - 23 Sep	KLM
09 Sep - 13 Sep	Copa
12 Sep - 18 Sep	Avianca
20 Sep - 27 Sep	Air Europa
07 Sep - 15 Sep	KLM

Also check the deals for one-way flights from Sao Paulo to Brussels in September.

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 Sao Paulo to Brussels in September from 696€

Return flights