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

Return flights

02 Dec - 09 Dec	Asiana Airlines
10 Dec - 28 Dec	Air China
23 Dec - 28 Dec	Air China
02 Dec - 10 Dec	Air China
01 Dec - 10 Dec	Air China
05 Dec - 10 Dec	Air China
22 Dec - 26 Dec	Air China
21 Dec - 28 Dec	Air China
01 Dec - 08 Dec	ANA
01 Dec - 09 Dec	ANA
23 Dec - 03 Jan	Air China
23 Dec - 01 Jan	Air China
22 Dec - 03 Jan	Air China
24 Dec - 02 Jan	Air China
23 Dec - 02 Jan	Air China
18 Dec - 01 Jan	Air China
24 Dec - 03 Jan	Air China
24 Dec - 04 Jan	Air China
24 Dec - 01 Jan	Air China
21 Dec - 02 Jan	Air China

Also check the deals for one-way flights from Seoul to Sydney in December.

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 December from 630€

Return flights