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

Return flights

05 Dec - 09 Dec	ITA Airways
01 Dec - 15 Dec	ITA Airways
01 Dec - 06 Dec	Turkish Airlines
24 Dec - 06 Jan	Turkish Airlines
21 Dec - 29 Dec	Turkish Airlines
16 Dec - 05 Jan	Turkish Airlines
25 Dec - 09 Jan	Turkish Airlines
20 Dec - 04 Jan	Turkish Airlines
19 Dec - 26 Dec	Turkish Airlines

Also check the deals for one-way flights from Athens 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 Athens to Sao Paulo in December from 647€

Return flights