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

Return flights

10 Sep - 17 Sep	Air China
24 Sep - 20 Oct	Air China
18 Sep - 11 Oct	Air China
23 Sep - 21 Oct	Air China
18 Sep - 23 Oct	Air China
09 Sep - 22 Sep	Air China
08 Sep - 22 Sep	Air China
08 Sep - 17 Sep	Air China
10 Sep - 22 Sep	Air China
22 Sep - 12 Oct	Air China
23 Sep - 13 Oct	Air China
24 Sep - 15 Oct	Air China
18 Sep - 22 Sep	Air China
16 Sep - 29 Oct	Air China
23 Sep - 14 Oct	Air China
21 Sep - 20 Oct	Ryanair
09 Sep - 23 Sep	Air China
07 Sep - 22 Sep	Air China
07 Sep - 16 Sep	Air China
17 Sep - 19 Sep	Hainan Airlines

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 515€

Return flights