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

Return flights

03 Dec - 10 Dec	Air Europa
03 Dec - 07 Dec	Air Europa
03 Dec - 22 Jan	Air Europa
04 Dec - 07 Dec	Air Europa
04 Dec - 11 Dec	Air Europa
07 Dec - 29 Jan	Air Europa
01 Dec - 29 Jan	Air Europa
03 Dec - 31 Jan	Air Europa
01 Dec - 31 Jan	Iberia
05 Dec - 27 Jan	Iberia
04 Dec - 13 Dec	TAP
21 Dec - 30 Jan	Royal Air Maroc
14 Dec - 25 Jan	Royal Air Maroc
21 Dec - 25 Jan	Royal Air Maroc
07 Dec - 14 Dec	Air Europa
01 Dec - 15 Dec	TAP
08 Dec - 14 Dec	Air Europa
06 Dec - 14 Dec	Air Europa
08 Dec - 16 Dec	Air Europa
25 Dec - 31 Jan	TAP

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

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 December from 524€

Return flights