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

Return flights

25 Aug - 15 Sep	Scoot
26 Aug - 10 Sep	Scoot
25 Aug - 01 Sep	Scoot
26 Aug - 17 Sep	Scoot
26 Aug - 31 Aug	Scoot
25 Aug - 03 Sep	Scoot
19 Aug - 08 Sep	Scoot
19 Aug - 25 Aug	Scoot
19 Aug - 15 Sep	Scoot
20 Aug - 03 Sep	Scoot
27 Aug - 30 Aug	Scoot
26 Aug - 02 Sep	Scoot
20 Aug - 26 Aug	Scoot
20 Aug - 27 Aug	Scoot
19 Aug - 26 Aug	Scoot
31 Aug - 10 Sep	Scoot
25 Aug - 29 Aug	Scoot
29 Aug - 31 Aug	Cebu Pacific
25 Aug - 31 Aug	Cebu Pacific
26 Aug - 28 Aug	Cebu Pacific

Also check the deals for one-way flights from Sydney 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 Sydney to Seoul in August from 367€

Return flights