AirHint found the following cheapest return flights from Mumbai (BOM) to Perth (PER) in September 2025 (see full year).

Return flights

23 Sep - 23 Oct	IndiGo
19 Sep - 23 Sep	IndiGo
02 Sep - 06 Sep	IndiGo
29 Sep - 06 Oct	Batik Air Malaysia
01 Sep - 09 Sep	IndiGo
13 Sep - 11 Oct	IndiGo
10 Sep - 15 Sep	IndiGo
02 Sep - 09 Oct	SriLankan Airlines
13 Sep - 20 Sep	IndiGo
01 Sep - 10 Sep	IndiGo
04 Sep - 30 Sep	IndiGo
04 Sep - 05 Sep	IndiGo
19 Sep - 27 Sep	Malaysia Airlines
13 Sep - 27 Sep	IndiGo

Also check the deals for one-way flights from Mumbai to Perth 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 Mumbai to Perth in September from 415€

Return flights