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

Return flights

03 Dec - 09 Dec	Lufthansa
17 Dec - 17 Jan	Lufthansa
02 Dec - 09 Dec	Lufthansa
05 Dec - 07 Dec	Lufthansa
11 Dec - 16 Dec	Lufthansa
05 Dec - 09 Dec	Lufthansa
13 Dec - 12 Jan	Lufthansa
14 Dec - 12 Jan	Lufthansa
03 Dec - 10 Dec	Air France
09 Dec - 17 Dec	Air China
21 Dec - 18 Jan	KLM
06 Dec - 11 Dec	Air France
06 Dec - 14 Dec	Air France
01 Dec - 13 Dec	LOT
01 Dec - 31 Jan	LOT
29 Dec - 06 Jan	Ethiopian Airlines
30 Dec - 06 Jan	Ethiopian Airlines
30 Dec - 07 Jan	LOT
30 Dec - 30 Jan	LOT
26 Dec - 07 Jan	Etihad Airways

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 $559

Return flights