AirHint found the following cheapest return flights from Sydney (SYD) to Seoul (ICN) in September 2026 (see full year).

Return flights

30 Sep - 07 Oct	Scoot
07 Sep - 14 Sep	Scoot
08 Sep - 16 Sep	Scoot
13 Sep - 17 Sep	Scoot
29 Sep - 07 Oct	Scoot
07 Sep - 14 Sep	Jetstar	direct
06 Sep - 13 Sep	Jetstar	direct
01 Sep - 06 Sep	Jetstar	direct
08 Sep - 16 Sep	Jetstar	direct
13 Sep - 17 Sep	Jetstar	direct
09 Sep - 16 Sep	Jetstar	direct
19 Sep - 30 Sep	Scoot
30 Sep - 13 Oct	Jetstar	direct
19 Sep - 06 Oct	Scoot
29 Sep - 10 Oct	Scoot
30 Sep - 11 Oct	Scoot
19 Sep - 10 Oct	Scoot
15 Sep - 27 Oct	Vietnam Airlines
22 Sep - 09 Oct	Scoot
22 Sep - 02 Oct	Scoot

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

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 September from $401

Return flights