AirHint found the following cheapest return flights from Delhi (DEL) to Sydney (SYD) in August 2025 (see full year).

Return flights

20 Aug - 03 Sep	Air India
24 Aug - 31 Aug	Air India
23 Aug - 30 Aug	Air India
05 Aug - 09 Sep	VietJet Air
13 Aug - 19 Aug	IndiGo
18 Aug - 04 Sep	VietJet Air
19 Aug - 27 Aug	VietJet Air
14 Aug - 20 Aug	Air India
05 Aug - 04 Sep	VietJet Air
05 Aug - 10 Aug	VietJet Air
06 Aug - 16 Aug	Air India
12 Aug - 27 Aug	VietJet Air
11 Aug - 27 Aug	VietJet Air
31 Aug - 07 Sep	Singapore Airlines
01 Aug - 05 Aug	AirAsia X
19 Aug - 04 Sep	VietJet Air
13 Aug - 04 Sep	VietJet Air
27 Aug - 10 Sep	VietJet Air
27 Aug - 24 Sep	VietJet Air
18 Aug - 03 Sep	AirAsia X

Also check the deals for one-way flights from Delhi to Sydney in August.

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 Sydney in August from 395€

Return flights