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

Return flights

27 Oct - 04 Nov	TAP
24 Oct - 02 Nov	TAP
31 Oct - 09 Nov	TAP
30 Oct - 29 Nov	TAP
26 Oct - 02 Nov	TAP
30 Oct - 13 Nov	TAP
31 Oct - 30 Nov	TAP
30 Oct - 14 Nov	TAP
02 Oct - 21 Oct	TAP
24 Oct - 01 Nov	TAP
13 Oct - 27 Oct	Air Europa
06 Oct - 21 Oct	Air Europa
09 Oct - 28 Oct	TAP
03 Oct - 02 Nov	Air Europa
01 Oct - 06 Oct	TAP
03 Oct - 26 Oct	Air Europa
13 Oct - 25 Oct	Air Europa
15 Oct - 29 Oct	Air Europa
07 Oct - 26 Oct	Air Europa
14 Oct - 28 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 522€

Return flights