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

Return flights

24 Sep - 12 Oct	Air China
25 Sep - 11 Oct	Etihad Airways
29 Sep - 13 Oct	Gulf Air
24 Sep - 09 Oct	Etihad Airways
29 Sep - 11 Oct	Gulf Air
22 Sep - 30 Oct	Air China
18 Sep - 28 Sep	Gulf Air
25 Sep - 28 Sep	Gulf Air
15 Sep - 22 Sep	Air Arabia
22 Sep - 28 Sep	Air Arabia
12 Sep - 28 Sep	Gulf Air
16 Sep - 20 Sep	SKY express
10 Sep - 22 Sep	Aegean Airlines
15 Sep - 21 Sep	Air Arabia
15 Sep - 08 Oct	Gulf Air
15 Sep - 28 Sep	Air Arabia
10 Sep - 19 Sep	Aegean Airlines
29 Sep - 05 Oct	Gulf Air
24 Sep - 05 Oct	Gulf Air
16 Sep - 02 Oct	SKY express

Also check the deals for one-way flights from Athens to Seoul 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 Athens to Seoul in September from 533€

Return flights