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

Return flights

01 Sep - 08 Sep	Asiana Airlines
11 Sep - 18 Sep	Korean Air
11 Sep - 24 Sep	Korean Air
26 Sep - 14 Oct	Korean Air
25 Sep - 14 Oct	Korean Air
29 Sep - 14 Oct	Korean Air
29 Sep - 15 Oct	Korean Air
26 Sep - 26 Oct	Korean Air
18 Sep - 23 Sep	Korean Air
25 Sep - 21 Oct	Korean Air
15 Sep - 20 Sep	Korean Air
13 Sep - 16 Sep	Korean Air
18 Sep - 27 Sep	Korean Air
19 Sep - 27 Sep	Korean Air
27 Sep - 13 Oct	Korean Air
28 Sep - 14 Oct	Korean Air
28 Sep - 15 Oct	Korean Air
13 Sep - 19 Sep	Korean Air
20 Sep - 27 Sep	Korean Air
27 Sep - 04 Oct	Korean Air

Also check the deals for one-way flights from Seoul to Santiago 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 Santiago in September from $1507

Return flights