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

Return flights

28 Oct - 04 Nov	VietJet Air
21 Oct - 29 Oct	VietJet Air
21 Oct - 27 Oct	VietJet Air
21 Oct - 28 Oct	VietJet Air
21 Oct - 25 Oct	VietJet Air
30 Oct - 07 Nov	VietJet Air
31 Oct - 03 Nov	VietJet Air
20 Oct - 31 Oct	VietJet Air
21 Oct - 30 Oct	VietJet Air
20 Oct - 28 Oct	VietJet Air
20 Oct - 25 Oct	VietJet Air
24 Oct - 28 Oct	VietJet Air
20 Oct - 26 Oct	VietJet Air
24 Oct - 02 Nov	VietJet Air
29 Oct - 02 Nov	Vietnam Airlines
29 Oct - 26 Nov	Vietnam Airlines
25 Oct - 01 Nov	Philippine Airlines

Also check the deals for one-way flights from Busan to Sydney 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 Busan to Sydney in October from $471

Return flights