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

Return flights

25 Aug - 15 Sep	Ethiopian Airlines
26 Aug - 10 Sep	Ethiopian Airlines
26 Aug - 24 Sep	Ethiopian Airlines
30 Aug - 15 Sep	Ethiopian Airlines
26 Aug - 14 Sep	Ethiopian Airlines
23 Aug - 15 Sep	Ethiopian Airlines
30 Aug - 19 Sep	Royal Air Maroc
25 Aug - 05 Sep	Ethiopian Airlines
25 Aug - 25 Sep	KLM
30 Aug - 12 Sep	Ethiopian Airlines
20 Aug - 27 Aug	KLM
23 Aug - 26 Aug	KLM
19 Aug - 24 Aug	KLM
19 Aug - 25 Aug	KLM
19 Aug - 23 Aug	KLM
19 Aug - 26 Aug	KLM
18 Aug - 25 Aug	TAP
19 Aug - 21 Aug	TAP
25 Aug - 26 Aug	TAP
24 Aug - 31 Aug	TAP

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.

Book a cheap hotel in Sao Paulo

Cheap car rent in Sao Paulo

Cheapest return flights from Porto to Sao Paulo in August from $861

Return flights