AirHint found the following cheapest return flights from Seoul (GMP) to Sydney (SYD) in August 2026 (see full year).

Return flights

27 Aug - 01 Sep	ANA
12 Aug - 18 Aug	ANA
11 Aug - 18 Aug	ANA
27 Aug - 30 Aug	Asiana Airlines
02 Aug - 05 Aug	ANA
21 Aug - 26 Aug	Air China
19 Aug - 22 Aug	Air China
16 Aug - 20 Aug	Air China
19 Aug - 24 Aug	Air China
26 Aug - 30 Aug	Air China
20 Aug - 25 Aug	ANA

Also check the deals for one-way flights from Seoul to Sydney 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 Seoul to Sydney in August from 595€

Return flights