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

Return flights

03 Dec - 24 Dec	Air Canada
03 Dec - 10 Dec	Air Canada
03 Dec - 07 Dec	Air Canada
05 Dec - 26 Dec	Air Canada
01 Dec - 09 Dec	Cathay Pacific
02 Dec - 29 Dec	Qatar Airways
01 Dec - 22 Dec	Qatar Airways
07 Dec - 25 Jan	Air Canada
07 Dec - 14 Dec	Air Canada
06 Dec - 29 Dec	Air Canada
09 Dec - 20 Jan	Air Canada
09 Dec - 18 Jan	Air Canada
07 Dec - 01 Jan	Qatar Airways
05 Dec - 12 Jan	Air Canada
05 Dec - 09 Jan	Air Canada
09 Dec - 02 Jan	Qatar Airways
03 Dec - 02 Jan	Turkish Airlines
05 Dec - 06 Jan	Air Canada
23 Dec - 31 Jan	Qatar Airways
09 Dec - 25 Dec	Air Canada

Also check the deals for one-way flights from Sydney 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 Sydney to Sao Paulo in December from $1490

Return flights