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

Return flights

20 Oct - 04 Nov	Air China
17 Oct - 30 Oct	Air China
17 Oct - 28 Oct	Air China
22 Oct - 28 Oct	Air China
15 Oct - 26 Oct	Air China
17 Oct - 24 Oct	Air China
17 Oct - 26 Oct	Air China
18 Oct - 28 Oct	Air China
16 Oct - 29 Oct	Etihad Airways
23 Oct - 03 Nov	Etihad Airways
01 Oct - 11 Oct	Etihad Airways
01 Oct - 13 Oct	Etihad Airways
24 Oct - 02 Nov	Air Serbia
25 Oct - 02 Nov	Air China
24 Oct - 08 Nov	Ryanair
25 Oct - 01 Nov	Aer Lingus
24 Oct - 01 Nov	Ethiopian Airlines
18 Oct - 02 Nov	Lufthansa
30 Oct - 06 Nov	British 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 527€

Return flights