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

Return flights

21 Oct - 29 Oct	Scoot
27 Oct - 19 Nov	Scoot
29 Oct - 19 Nov	Scoot
21 Oct - 26 Nov	Scoot
19 Oct - 29 Oct	Scoot
23 Oct - 26 Oct	T'way Air
23 Oct - 03 Nov	T'way Air
23 Oct - 02 Nov	T'way Air
21 Oct - 28 Oct	Scoot
27 Oct - 10 Nov	Scoot
21 Oct - 18 Nov	Scoot
04 Oct - 14 Nov	Scoot
31 Oct - 12 Nov	Scoot
24 Oct - 17 Nov	Scoot
20 Oct - 27 Oct	Scoot
01 Oct - 22 Oct	Scoot
02 Oct - 21 Oct	Cebu Pacific
01 Oct - 23 Oct	Cebu Pacific
18 Oct - 26 Oct	Scoot
02 Oct - 15 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 332€

Return flights