AirHint found the following cheapest return flights from Adelaide (ADL) to Seoul (ICN) in August 2025 (see full year).

Return flights

25 Aug - 15 Sep	Virgin Australia
26 Aug - 02 Sep	Singapore Airlines
25 Aug - 02 Sep	Singapore Airlines
25 Aug - 03 Sep	Singapore Airlines
17 Aug - 22 Sep	Malaysia Airlines
19 Aug - 26 Aug	Singapore Airlines
17 Aug - 19 Sep	Malaysia Airlines
17 Aug - 20 Sep	Malaysia Airlines
18 Aug - 22 Aug	Singapore Airlines
18 Aug - 19 Sep	Singapore Airlines
30 Aug - 03 Sep	Virgin Australia
29 Aug - 06 Sep	Jetstar

Also check the deals for one-way flights from Adelaide to Seoul in August.

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 Adelaide to Seoul in August from 546€

Return flights