AirHint found the following cheapest one-way flights from Seoul (ICN) to Sydney (SYD) in December 2025 (see full year).

One-Way flights

01 Dec	Jetstar	direct
15 Dec	Xiamen Airlines
02 Dec	Jetstar	direct
11 Dec	Jetstar	direct
09 Dec	Jetstar	direct
04 Dec	Jetstar	direct
10 Dec	Jetstar	direct
12 Dec	Jetstar	direct
03 Dec	Jetstar	direct
08 Dec	Scoot Tigerair

Also check the deals for return 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 one-way flights from Seoul to Sydney in December from 156€

One-Way flights