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

Return flights

10 Sep - 13 Sep	Asiana Airlines
07 Sep - 11 Sep	Asiana Airlines
03 Sep - 11 Sep	Asiana Airlines
02 Sep - 09 Sep	Asiana Airlines
04 Sep - 06 Sep	Asiana Airlines
11 Sep - 16 Sep	Asiana Airlines
01 Sep - 15 Sep	Asiana Airlines
03 Sep - 07 Sep	Asiana Airlines
04 Sep - 08 Sep	Asiana Airlines
08 Sep - 11 Sep	Asiana Airlines
26 Sep - 05 Oct	Asiana Airlines
05 Sep - 02 Oct	Asiana Airlines
26 Sep - 04 Oct	Air China
22 Sep - 02 Oct	ANA
23 Sep - 02 Oct	ANA
30 Sep - 11 Oct	ANA
21 Sep - 04 Oct	ANA
29 Sep - 04 Oct	ANA
19 Sep - 03 Oct	ANA
24 Sep - 04 Oct	ANA

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 726€

Return flights