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

Return flights

27 Oct - 13 Nov	TAP
29 Oct - 05 Nov	Air Europa
13 Oct - 19 Oct	Air Europa
06 Oct - 28 Oct	Air Europa
29 Oct - 12 Nov	Air Europa
30 Oct - 06 Nov	Air Europa
05 Oct - 19 Oct	Air Europa
05 Oct - 28 Oct	Air Europa
13 Oct - 22 Oct	Air Europa
27 Oct - 09 Nov	Air Europa
25 Oct - 02 Nov	Air Europa
25 Oct - 19 Nov	Air Europa
30 Oct - 13 Nov	Air Europa
28 Oct - 11 Nov	Air Europa
24 Oct - 18 Nov	TAP
14 Oct - 21 Oct	Air Europa
07 Oct - 30 Oct	Air Europa
07 Oct - 14 Oct	Air Europa
02 Oct - 16 Oct	Air Europa
11 Oct - 14 Oct	Air Europa

Also check the deals for one-way flights from Porto to Sao Paulo in October.

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 October from $698

Return flights