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

Return flights

08 Sep - 22 Sep	Ethiopian Airlines
02 Sep - 23 Sep	Qatar Airways
02 Sep - 09 Sep	Qatar Airways
02 Sep - 30 Sep	Qatar Airways
02 Sep - 15 Sep	Qatar Airways
04 Sep - 07 Sep	Qatar Airways
01 Sep - 01 Oct	Qatar Airways
30 Sep - 12 Oct	Qatar Airways
26 Sep - 11 Oct	Qatar Airways
30 Sep - 31 Oct	Cathay Pacific

Also check the deals for one-way flights from Hong Kong to Sao Paulo 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 Hong Kong to Sao Paulo in September from 921€

Return flights