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

Return flights

10 Sep - 21 Sep	Iberia
10 Sep - 23 Sep	Iberia
16 Sep - 23 Sep	United
17 Sep - 24 Sep	United
15 Sep - 08 Oct	Iberia
22 Sep - 01 Oct	United
23 Sep - 06 Oct	United
24 Sep - 06 Oct	United
18 Sep - 25 Sep	United
24 Sep - 07 Oct	Air Europa
07 Sep - 15 Sep	Avianca
19 Sep - 26 Sep	United
19 Sep - 05 Oct	United
04 Sep - 14 Sep	United
09 Sep - 16 Sep	United
26 Sep - 06 Oct	United
10 Sep - 17 Sep	Iberia
22 Sep - 09 Oct	Air Europa
15 Sep - 01 Oct	TAP
16 Sep - 02 Oct	Iberia

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 $784

Return flights