AirHint found the following cheapest return flights from Bangalore (BLR) to Sydney (SYD) in September 2025 (see full year).

Return flights

24 Sep - 10 Oct	Air India
24 Sep - 04 Oct	Air India
22 Sep - 17 Oct	IndiGo
20 Sep - 27 Sep	IndiGo
20 Sep - 10 Oct	SriLankan Airlines
19 Sep - 12 Oct	SriLankan Airlines
19 Sep - 11 Oct	SriLankan Airlines
17 Sep - 21 Sep	VietJet Air
22 Sep - 12 Oct	AirAsia
29 Sep - 19 Oct	AirAsia
22 Sep - 11 Oct	AirAsia
29 Sep - 12 Oct	AirAsia
17 Sep - 30 Sep	AirAsia
22 Sep - 30 Sep	AirAsia
20 Sep - 24 Sep	IndiGo
19 Sep - 28 Sep	SriLankan Airlines
17 Sep - 20 Sep	AirAsia
24 Sep - 30 Sep	AirAsia
19 Sep - 30 Sep	AirAsia
17 Sep - 19 Sep	AirAsia

Also check the deals for one-way flights from Bangalore 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.

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Cheapest return flights from Bangalore to Sydney in September from 483€

Return flights