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

Return flights

15 Oct - 22 Oct	VietJet Air
15 Oct - 31 Oct	VietJet Air
22 Oct - 31 Oct	VietJet Air
31 Oct - 14 Nov	AirAsia X
31 Oct - 07 Nov	AirAsia X
31 Oct - 09 Nov	AirAsia X
31 Oct - 04 Nov	AirAsia X
01 Oct - 31 Oct	VietJet Air
31 Oct - 16 Nov	AirAsia X
28 Oct - 26 Nov	Malaysia Airlines
24 Oct - 22 Nov	Malaysia Airlines
29 Oct - 14 Nov	AirAsia X
29 Oct - 07 Nov	AirAsia X
29 Oct - 09 Nov	AirAsia X
20 Oct - 24 Oct	AirAsia X
13 Oct - 24 Oct	AirAsia X
17 Oct - 22 Oct	AirAsia X
26 Oct - 31 Oct	AirAsia X
20 Oct - 31 Oct	AirAsia X
20 Oct - 22 Oct	AirAsia X

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

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 October from 416€

Return flights