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

Return flights

30 Oct - 10 Nov	Scandinavian Airlines
29 Oct - 20 Nov	Ryanair
27 Oct - 08 Nov	SKY express
29 Oct - 05 Nov	Wizz Air UK
17 Oct - 26 Oct	Air China
23 Oct - 30 Oct	easyJet
23 Oct - 28 Oct	SKY express
21 Oct - 30 Oct	Aegean Airlines
03 Oct - 15 Oct	Scoot
24 Oct - 02 Nov	SKY express
15 Oct - 23 Oct	Air China
21 Oct - 31 Oct	Etihad Airways
26 Oct - 02 Nov	Aegean Airlines
15 Oct - 31 Oct	Aegean Airlines
16 Oct - 28 Oct	Air Arabia
26 Oct - 28 Oct	Sichuan Airlines
30 Oct - 09 Nov	Etihad Airways
31 Oct - 10 Nov	Ethiopian Airlines
25 Oct - 01 Nov	Etihad Airways
20 Oct - 01 Nov	LOT

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 515€

Return flights