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

Return flights

25 Jul - 01 Aug	Air India
27 Jul - 29 Jul	AirAsia X
25 Jul - 09 Aug	AirAsia X
24 Jul - 31 Jul	VietJet Air
29 Jul - 20 Aug	VietJet Air
24 Jul - 08 Aug	Batik Air Malaysia
29 Jul - 05 Aug	VietJet Air
24 Jul - 09 Aug	Batik Air Malaysia
25 Jul - 27 Jul	IndiGo
29 Jul - 30 Aug	VietJet Air
29 Jul - 13 Aug	VietJet Air
31 Jul - 21 Aug	IndiGo
27 Jul - 28 Jul	Air India
30 Jul - 20 Aug	AirAsia X
28 Jul - 31 Jul	AirAsia X
25 Jul - 28 Jul	AirAsia X
25 Jul - 30 Jul	AirAsia X
25 Jul - 29 Jul	AirAsia X
23 Jul - 28 Jul	AirAsia X
27 Jul - 29 Jul	Air India	direct

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

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 July from $811

Return flights