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

Return flights

15 Dec - 28 Dec	Turkish Airlines
01 Dec - 12 Dec	Turkish Airlines
29 Dec - 11 Jan	Turkish Airlines
31 Dec - 16 Jan	Turkish Airlines
15 Dec - 16 Jan	Turkish Airlines
25 Dec - 26 Dec	Turkish Airlines
17 Dec - 04 Jan	Turkish Airlines
22 Dec - 02 Jan	Turkish Airlines
25 Dec - 11 Jan	Turkish Airlines
17 Dec - 02 Jan	Turkish Airlines
18 Dec - 04 Jan	Turkish Airlines
18 Dec - 02 Jan	Turkish Airlines
25 Dec - 04 Jan	Turkish Airlines
04 Dec - 14 Dec	Turkish Airlines
25 Dec - 25 Dec	LOT

Also check the deals for one-way flights from Tallinn 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 Tallinn to Sao Paulo in December from $839

Return flights