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

Return flights

02 Oct - 15 Oct	AirAsia X
28 Oct - 04 Nov	VietJet Air
02 Oct - 09 Oct	AirAsia X
18 Oct - 28 Oct	Cebu Pacific
26 Oct - 03 Nov	Scoot
28 Oct - 06 Nov	Scoot
27 Oct - 03 Nov	Scoot
27 Oct - 21 Nov	Scoot
18 Oct - 27 Oct	Cebu Pacific
18 Oct - 28 Oct	Jetstar	direct
15 Oct - 22 Oct	Scoot
30 Oct - 19 Nov	Scoot
21 Oct - 03 Nov	Scoot
21 Oct - 06 Nov	Scoot
05 Oct - 21 Oct	Jetstar
26 Oct - 16 Nov	Scoot
04 Oct - 20 Oct	AirAsia X
02 Oct - 13 Oct	AirAsia X
15 Oct - 23 Oct	Scoot
14 Oct - 07 Nov	Scoot

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

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 October from 320€

Return flights