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

Return flights

27 Oct - 12 Nov	Scoot
25 Oct - 10 Nov	Scoot
26 Oct - 10 Nov	Scoot
25 Oct - 12 Nov	Scoot
27 Oct - 10 Nov	Scoot
28 Oct - 05 Nov	Scoot
27 Oct - 18 Nov	Scoot
21 Oct - 15 Nov	Scoot
26 Oct - 08 Nov	Scoot
26 Oct - 11 Nov	Scoot
21 Oct - 24 Oct	T'way Air	direct
28 Oct - 29 Oct	Jetstar
23 Oct - 29 Oct	Jetstar
27 Oct - 28 Oct	T'way Air
23 Oct - 28 Oct	Jetstar
22 Oct - 29 Oct	Jetstar	direct
28 Oct - 29 Oct	Jetstar	direct
27 Oct - 30 Oct	T'way Air
23 Oct - 29 Oct	T'way Air	direct
21 Oct - 29 Oct	T'way Air	direct

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 335€

Return flights