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

Return flights

05 Jan - 22 Jan	Air China
15 Jan - 22 Jan	Air China
16 Jan - 23 Jan	Air China
06 Jan - 16 Jan	Air China
12 Jan - 26 Jan	Air China
07 Jan - 23 Jan	Air China
08 Jan - 22 Jan	Air China
15 Jan - 25 Jan	Air China
08 Jan - 23 Jan	Air China
14 Jan - 21 Jan	Air China
25 Jan - 04 Feb	Air China
19 Jan - 02 Feb	Air China
25 Jan - 02 Feb	Air China
31 Jan - 08 Feb	Air China
31 Jan - 07 Feb	Air China
25 Jan - 12 Feb	Air China
28 Jan - 07 Feb	Air China
24 Jan - 01 Feb	Air China
14 Jan - 11 Feb	Air China
25 Jan - 07 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 784€

Return flights