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

Return flights

05 Dec - 08 Dec	Scoot
01 Dec - 10 Dec	Scoot
05 Dec - 11 Dec	Virgin Australia
01 Dec - 09 Dec	Scoot
04 Dec - 07 Dec	Jetstar	direct
01 Dec - 17 Dec	Scoot
03 Dec - 08 Dec	Virgin Australia
03 Dec - 10 Dec	Virgin Australia
02 Dec - 08 Dec	Scoot
02 Dec - 06 Dec	Scoot
31 Dec - 04 Jan	China Eastern
01 Dec - 06 Jan	Scoot
02 Dec - 06 Jan	Scoot
01 Dec - 31 Jan	Scoot
08 Dec - 07 Jan	VietJet Air
29 Dec - 04 Jan	T'way Air
30 Dec - 04 Jan	T'way Air
01 Dec - 28 Jan	Cathay Pacific
28 Dec - 04 Jan	Xiamen Airlines
05 Dec - 06 Jan	Scoot

Also check the deals for one-way flights from Sydney to Seoul 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 Sydney to Seoul in December from 500€

Return flights