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

Return flights

08 Sep - 15 Sep	Air China
01 Sep - 09 Sep	Air China
01 Sep - 15 Sep	Air China
01 Sep - 22 Sep	Air China
28 Sep - 13 Oct	Air China
29 Sep - 03 Oct	Air China
01 Sep - 08 Sep	Air China
10 Sep - 01 Oct	Air France
19 Sep - 30 Sep	Air France
19 Sep - 03 Oct	Air France
18 Sep - 02 Oct	Air France
19 Sep - 01 Oct	Air France
17 Sep - 23 Sep	Air France
27 Sep - 29 Sep	Air China
17 Sep - 24 Sep	Air France
14 Sep - 27 Sep	Air France
09 Sep - 27 Oct	KLM
27 Sep - 04 Oct	Ethiopian Airlines
20 Sep - 03 Oct	Ethiopian Airlines
29 Sep - 02 Oct	Ethiopian Airlines

Also check the deals for one-way flights from Seoul to Sao Paulo in September.

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 September from 1067€

Return flights