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

Return flights

02 Oct - 16 Oct	Etihad Airways
02 Oct - 11 Oct	Etihad Airways
01 Oct - 14 Oct	Etihad Airways
23 Oct - 02 Nov	Etihad Airways
22 Oct - 07 Nov	Etihad Airways
17 Oct - 30 Oct	Air China
15 Oct - 24 Oct	Air China
01 Oct - 10 Oct	KLM
16 Oct - 20 Oct	Scandinavian Airlines
01 Oct - 11 Oct	Lufthansa
08 Oct - 13 Oct	Ethiopian Airlines
03 Oct - 06 Oct	Ethiopian Airlines
23 Oct - 01 Nov	Etihad Airways

Also check the deals for one-way flights from Athens to Seoul 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 Athens to Seoul in October from $684

Return flights