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

Return flights

31 Jan - 09 Feb	Jeju Air
19 Jan - 27 Jan	T'way Air
16 Jan - 26 Jan	Asiana Airlines
16 Jan - 25 Jan	Asiana Airlines
05 Jan - 13 Jan	Asiana Airlines
17 Jan - 27 Jan	T'way Air
16 Jan - 23 Jan	Air China
02 Jan - 21 Jan	Asiana Airlines
01 Jan - 07 Jan	Jeju Air
22 Jan - 04 Feb	Air China
12 Jan - 16 Jan	Air Busan
16 Jan - 01 Feb	Asiana Airlines
31 Jan - 07 Feb	Air China
31 Jan - 10 Feb	Air China
05 Jan - 12 Jan	Air China
22 Jan - 02 Feb	Air China
31 Jan - 11 Feb	Air China
15 Jan - 07 Feb	Air China
21 Jan - 02 Feb	Air China
30 Jan - 08 Feb	Air China

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

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 January from $714

Return flights