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

Return flights

02 Sep - 15 Sep	Air China
04 Sep - 07 Sep	Asiana Airlines
01 Sep - 08 Sep	ANA
02 Sep - 06 Sep	Air China
04 Sep - 10 Sep	Air China
02 Sep - 09 Sep	Asiana Airlines
01 Sep - 07 Sep	ANA
03 Sep - 09 Sep	ANA
09 Sep - 16 Sep	ANA
05 Sep - 12 Sep	Air China
29 Sep - 07 Oct	ANA
30 Sep - 13 Oct	Air China
01 Sep - 01 Oct	ANA
29 Sep - 10 Oct	ANA
23 Sep - 05 Oct	ANA
23 Sep - 01 Oct	ANA
20 Sep - 10 Oct	ANA
20 Sep - 01 Oct	ANA
23 Sep - 03 Oct	ANA
30 Sep - 05 Oct	Asiana Airlines

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

Book a cheap hotel in Sydney

Cheap car rent in Sydney

Cheapest return flights from Seoul to Sydney in September from $787

Return flights