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

Return flights

23 Sep - 30 Sep	Air Premia
19 Sep - 29 Sep	Air France
25 Sep - 01 Oct	Ethiopian Airlines
30 Sep - 11 Oct	Aeromexico
25 Sep - 30 Sep	Air France
24 Sep - 30 Sep	Air France
21 Sep - 25 Sep	KLM
26 Sep - 01 Oct	Ethiopian Airlines
23 Sep - 28 Sep	Air France
26 Sep - 22 Oct	Air France
26 Sep - 24 Oct	Ethiopian Airlines
21 Sep - 28 Sep	KLM
21 Sep - 30 Sep	KLM
22 Sep - 29 Sep	Air France
19 Sep - 07 Oct	Qatar Airways
25 Sep - 06 Oct	Qatar Airways
22 Sep - 30 Sep	Air France
30 Sep - 01 Oct	Qatar Airways
30 Sep - 17 Oct	Qatar Airways
27 Sep - 01 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 $1322

Return flights