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

Return flights

10 Sep - 02 Oct	Air India
09 Sep - 12 Sep	Air India
10 Sep - 13 Sep	IndiGo
01 Sep - 04 Sep	Air India
05 Sep - 10 Sep	Air India
01 Sep - 07 Sep	Air India
01 Sep - 03 Sep	AirAsia
01 Sep - 09 Sep	AirAsia
29 Sep - 12 Oct	Malaysia Airlines
17 Sep - 23 Sep	AirAsia
01 Sep - 12 Sep	AirAsia
19 Sep - 23 Sep	AirAsia
22 Sep - 11 Oct	AirAsia
29 Sep - 05 Oct	Air India
26 Sep - 03 Oct	Air India
27 Sep - 06 Oct	Air India
27 Sep - 05 Oct	Air India
29 Sep - 17 Oct	AirAsia
29 Sep - 11 Oct	AirAsia
29 Sep - 16 Oct	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 371€

Return flights