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

Return flights

10 Sep - 14 Sep	China Eastern
04 Sep - 10 Sep	Lufthansa
17 Sep - 24 Sep	China Eastern
18 Sep - 28 Sep	Etihad Airways
10 Sep - 15 Sep	Etihad Airways
11 Sep - 15 Sep	Etihad Airways
10 Sep - 18 Sep	Etihad Airways
11 Sep - 16 Sep	Etihad Airways
09 Sep - 15 Sep	Etihad Airways
10 Sep - 21 Sep	Etihad Airways
27 Sep - 04 Oct	Etihad Airways
23 Sep - 23 Oct	Etihad Airways
25 Sep - 18 Oct	Finnair
25 Sep - 05 Oct	Asiana Airlines
24 Sep - 04 Oct	Etihad Airways
24 Sep - 02 Oct	Etihad Airways
22 Sep - 05 Oct	Emirates
21 Sep - 18 Oct	Finnair
26 Sep - 05 Oct	Air India
23 Sep - 05 Oct	Etihad Airways

Also check the deals for one-way flights from Seoul to Amsterdam 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 Seoul to Amsterdam in September from 461€

Return flights