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

Return flights

26 Sep - 23 Oct	Avianca
16 Sep - 19 Oct	Avianca
26 Sep - 19 Oct	Avianca
28 Sep - 27 Oct	Avianca
18 Sep - 22 Oct	Avianca
18 Sep - 29 Oct	Avianca
17 Sep - 21 Sep	Avianca
07 Sep - 14 Sep	Avianca
10 Sep - 17 Sep	Avianca
27 Sep - 04 Oct	Avianca
22 Sep - 06 Oct	LATAM Airlines Group
28 Sep - 31 Oct	LATAM Airlines Group
25 Sep - 02 Oct	Delta

Also check the deals for one-way flights from Santiago to Seoul 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 Santiago to Seoul in September from $1276

Return flights