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

Return flights

21 Sep - 17 Oct	Air China
17 Sep - 17 Oct	Air China
07 Sep - 17 Sep	Ryanair
08 Sep - 18 Sep	Air China
18 Sep - 09 Oct	Austrian Airlines
02 Sep - 15 Sep	Lufthansa
26 Sep - 13 Oct	SWISS
01 Sep - 08 Sep	Air China
05 Sep - 12 Sep	Air China
01 Sep - 06 Sep	Air China
01 Sep - 12 Sep	Air China
04 Sep - 18 Sep	Air China
04 Sep - 16 Sep	Air China
05 Sep - 17 Sep	Air China
17 Sep - 11 Oct	Lufthansa
28 Sep - 13 Oct	Lufthansa
25 Sep - 12 Oct	Austrian Airlines
29 Sep - 17 Oct	Lufthansa
26 Sep - 12 Oct	SWISS
27 Sep - 15 Oct	SWISS

Also check the deals for one-way flights from Vienna to Seoul 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 Vienna to Seoul in September from $617

Return flights