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

Return flights

10 Sep - 14 Sep	IndiGo
15 Sep - 23 Sep	Air India
01 Sep - 08 Sep	Air India
08 Sep - 14 Sep	Air India
27 Sep - 12 Oct	Batik Air Malaysia
02 Sep - 16 Sep	IndiGo
26 Sep - 08 Oct	AirAsia X
26 Sep - 16 Oct	AirAsia X
26 Sep - 12 Oct	AirAsia X
28 Sep - 08 Oct	AirAsia X
28 Sep - 16 Oct	AirAsia X
28 Sep - 12 Oct	AirAsia X
29 Sep - 08 Oct	AirAsia X
21 Sep - 07 Oct	IndiGo
29 Sep - 16 Oct	AirAsia X
11 Sep - 18 Sep	SpiceJet
08 Sep - 13 Sep	AirAsia X
08 Sep - 15 Sep	AirAsia X
07 Sep - 14 Sep	AirAsia X
05 Sep - 14 Sep	AirAsia X

Also check the deals for one-way flights from Delhi 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 Delhi to Perth in September from 347€

Return flights