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

Return flights

29 Dec - 07 Jan	Etihad Airways
31 Dec - 07 Jan	Etihad Airways
28 Dec - 09 Jan	KLM
29 Dec - 09 Jan	Air France
29 Dec - 16 Jan	KLM
30 Dec - 07 Jan	KLM
30 Dec - 06 Jan	KLM
22 Dec - 27 Dec	Air France
22 Dec - 28 Dec	Air France
27 Dec - 31 Dec	LOT
28 Dec - 05 Jan	KLM
24 Dec - 29 Dec	KLM
30 Dec - 04 Jan	China Eastern
23 Dec - 26 Dec	Qatar Airways
22 Dec - 31 Dec	T'way Air
24 Dec - 31 Dec	Qatar Airways
24 Dec - 28 Dec	Qatar Airways
25 Dec - 29 Dec	KLM
28 Dec - 31 Dec	Qatar Airways
25 Dec - 06 Jan	KLM

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

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 Seoul to Athens in December from 430€

Return flights