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

Return flights

11 Dec - 19 Dec	Jetstar
07 Dec - 18 Dec	VietJet Air
05 Dec - 15 Dec	AirAsia X
12 Dec - 19 Dec	Batik Air Malaysia
06 Dec - 16 Dec	Vietnam Airlines
05 Dec - 17 Dec	AirAsia X
02 Dec - 09 Dec	Vietnam Airlines
06 Dec - 18 Dec	Vietnam Airlines
05 Dec - 22 Dec	AirAsia X
05 Dec - 07 Dec	AirAsia X
10 Dec - 05 Jan	Jetstar
15 Dec - 15 Jan	Jetstar
15 Dec - 10 Jan	Jetstar
04 Dec - 27 Jan	Vietnam Airlines
06 Dec - 27 Jan	Vietnam Airlines
27 Dec - 27 Jan	Qatar Airways
02 Dec - 06 Jan	Vietnam Airlines
24 Dec - 02 Jan	Cathay Pacific
02 Dec - 13 Jan	Cathay Pacific
30 Dec - 30 Jan	Qatar Airways

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

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 Sydney to Delhi in December from $752

Return flights