AirHint found the following cheapest return flights from Seoul (ICN) to Amsterdam (AMS) in September 2026 (see full year).

Return flights

14 Sep - 17 Sep	China Southern
07 Sep - 16 Sep	Lufthansa
08 Sep - 16 Sep	Lufthansa
22 Sep - 30 Sep	China Airlines
06 Sep - 19 Sep	China Airlines
21 Sep - 06 Oct	Etihad Airways
27 Sep - 26 Oct	Finnair
21 Sep - 24 Sep	Etihad Airways
21 Sep - 25 Sep	Etihad Airways
06 Sep - 17 Sep	China Southern
22 Sep - 29 Sep	Air India
24 Sep - 04 Oct	Air India
24 Sep - 01 Oct	Air India
22 Sep - 04 Oct	Air India
27 Sep - 02 Oct	Air India
20 Sep - 24 Sep	Air India
25 Sep - 02 Oct	Air India
24 Sep - 03 Oct	Etihad Airways
23 Sep - 04 Oct	SWISS
25 Sep - 02 Oct	Korean Air	direct

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 $640

Return flights