AirHint found the following cheapest return flights from Seoul (ICN) to Buenos Aires (AEP) in October 2025 (see full year).

Return flights

17 Oct - 22 Oct	Air Canada
24 Oct - 21 Nov	Air Canada
03 Oct - 06 Oct	Air Canada
03 Oct - 13 Oct	Air Canada
09 Oct - 16 Oct	LATAM Airlines Group
12 Oct - 21 Oct	Qatar Airways
27 Oct - 13 Nov	Emirates
15 Oct - 29 Oct	Qatar Airways
13 Oct - 17 Nov	Qatar Airways
27 Oct - 03 Nov	Emirates
03 Oct - 11 Oct	Air Canada
15 Oct - 19 Oct	Qatar Airways
20 Oct - 31 Oct	Qatar Airways
13 Oct - 17 Oct	Qatar Airways

Also check the deals for one-way flights from Seoul to Buenos Aires in October.

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 Buenos Aires in October from $1763

Return flights