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

Return flights

08 Dec - 21 Jan	Iberia
05 Dec - 28 Jan	Iberia
09 Dec - 29 Jan	Air Europa
01 Dec - 28 Dec	Air China
01 Dec - 29 Dec	Air China
09 Dec - 19 Jan	Air Europa
05 Dec - 13 Dec	TAAG Angola Airlines
04 Dec - 29 Dec	Air Europa
02 Dec - 07 Dec	Air Europa
10 Dec - 29 Dec	Air Europa
02 Dec - 10 Dec	Iberia
10 Dec - 11 Jan	Royal Air Maroc
02 Dec - 06 Dec	Air Europa
01 Dec - 07 Dec	Air Europa
08 Dec - 15 Dec	Air China
06 Dec - 31 Jan	Iberia
12 Dec - 23 Jan	Iberia
12 Dec - 19 Jan	Iberia
09 Dec - 16 Jan	Air Europa
14 Dec - 24 Jan	Iberia

Also check the deals for one-way flights from Sao Paulo to Porto 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 Sao Paulo to Porto in December from 546€

Return flights