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

Return flights

11 Aug - 26 Aug	Etihad Airways
18 Aug - 25 Aug	Etihad Airways
19 Aug - 25 Aug	Etihad Airways
07 Aug - 26 Aug	Etihad Airways
17 Aug - 01 Sep	Etihad Airways
12 Aug - 23 Aug	Etihad Airways
11 Aug - 24 Aug	Etihad Airways
12 Aug - 24 Aug	Etihad Airways
18 Aug - 24 Aug	Etihad Airways
20 Aug - 30 Aug	Etihad Airways
18 Aug - 28 Aug	Etihad Airways
25 Aug - 05 Sep	Etihad Airways
30 Aug - 11 Sep	Air China
27 Aug - 03 Sep	Scoot Tigerair
26 Aug - 09 Sep	Ryanair
22 Aug - 06 Sep	Air Arabia
14 Aug - 03 Sep	Aegean Airlines
27 Aug - 01 Sep	KLM

Also check the deals for one-way flights from Athens to Seoul in August.

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 August from $678

Return flights