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

Return flights

11 Sep - 19 Sep	Air China
02 Sep - 07 Sep	Etihad Airways
02 Sep - 06 Sep	Air China
09 Sep - 15 Sep	Air China
02 Sep - 10 Sep	Air China
09 Sep - 19 Sep	Air China
02 Sep - 29 Oct	Air China
09 Sep - 16 Sep	KLM
11 Sep - 17 Sep	Etihad Airways
15 Sep - 26 Sep	KLM
11 Sep - 16 Sep	Etihad Airways
11 Sep - 02 Oct	Etihad Airways
12 Sep - 19 Oct	Lufthansa
25 Sep - 18 Oct	Air China
25 Sep - 03 Oct	Etihad Airways
24 Sep - 03 Oct	Etihad Airways
25 Sep - 02 Oct	Etihad Airways
30 Sep - 10 Oct	Shandong Airlines
29 Sep - 08 Oct	Ethiopian Airlines
24 Sep - 04 Oct	Lufthansa

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

Book a cheap hotel in Athens

Cheap car rent in Athens

Cheapest return flights from Seoul to Athens in September from $600

Return flights