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

Return flights

26 Dec - 31 Jan	Aeromexico
04 Dec - 12 Dec	Air China
01 Dec - 12 Dec	Air China
01 Dec - 26 Dec	Air China
11 Dec - 28 Jan	Air France
17 Dec - 24 Dec	Aeromexico
07 Dec - 14 Dec	Air France
01 Dec - 31 Dec	Air France
08 Dec - 15 Jan	Air France
23 Dec - 10 Jan	Korean Air
08 Dec - 16 Dec	Emirates
22 Dec - 28 Dec	Turkish Airlines
10 Dec - 20 Jan	Emirates
30 Dec - 08 Jan	Qatar Airways
12 Dec - 21 Dec	Ethiopian Airlines
14 Dec - 04 Jan	Qatar Airways
21 Dec - 10 Jan	KLM
11 Dec - 18 Dec	Air Canada
25 Dec - 03 Jan	Delta

Also check the deals for one-way flights from Seoul 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 Seoul to Sao Paulo in December from $1116

Return flights