AirHint found the following cheapest return flights from Porto (OPO) to Sao Paulo (GRU) in August 2025 (see full year).

Return flights

31 Aug - 30 Sep	Air Europa
27 Aug - 30 Sep	Iberia
25 Aug - 22 Sep	Ethiopian Airlines
26 Aug - 10 Sep	Ethiopian Airlines
25 Aug - 08 Sep	Ethiopian Airlines
16 Aug - 27 Sep	British Airways
27 Aug - 24 Sep	KLM
28 Aug - 25 Sep	Air Europa
30 Aug - 27 Sep	Air Europa
31 Aug - 28 Sep	Air Europa
26 Aug - 31 Aug	Ethiopian Airlines
16 Aug - 23 Aug	KLM
17 Aug - 24 Aug	KLM
15 Aug - 17 Aug	KLM
16 Aug - 22 Aug	KLM
15 Aug - 19 Aug	KLM
20 Aug - 24 Aug	KLM
18 Aug - 24 Aug	KLM
20 Aug - 27 Aug	KLM
14 Aug - 23 Aug	Air France

Also check the deals for one-way flights from Porto to Sao Paulo 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 Porto to Sao Paulo in August from 702€

Return flights