AirHint found the following cheapest return flights from Seoul (ICN) to Perth (PER) in December 2025 (see full year).

Return flights

18 Dec - 15 Jan	AirAsia X
05 Dec - 18 Jan	AirAsia X
23 Dec - 07 Jan	AirAsia X
13 Dec - 15 Jan	Scoot
19 Dec - 20 Jan	Scoot
13 Dec - 24 Jan	AirAsia X
01 Dec - 03 Dec	AirAsia X
23 Dec - 04 Jan	AirAsia X
04 Dec - 06 Dec	Batik Air Malaysia
03 Dec - 06 Jan	AirAsia X
22 Dec - 19 Jan	AirAsia X
20 Dec - 19 Jan	AirAsia X
03 Dec - 09 Dec	Scoot
01 Dec - 08 Dec	AirAsia X
04 Dec - 07 Dec	AirAsia X
01 Dec - 07 Dec	AirAsia X
01 Dec - 05 Dec	AirAsia X
02 Dec - 05 Dec	AirAsia X
04 Dec - 08 Dec	AirAsia X
02 Dec - 07 Dec	AirAsia X

Also check the deals for one-way flights from Seoul to Perth 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 Perth in December from 382€

Return flights