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

Return flights

02 Dec - 14 Dec	AirAsia X
01 Dec - 20 Dec	Jetstar
10 Dec - 25 Dec	Jetstar
05 Dec - 31 Dec	AirAsia X
13 Dec - 31 Dec	AirAsia X
08 Dec - 23 Dec	Air China
05 Dec - 22 Jan	AirAsia X
06 Dec - 20 Jan	Air China
05 Dec - 12 Jan	Batik Air Malaysia
17 Dec - 31 Dec	Jetstar
18 Dec - 31 Dec	AirAsia X
17 Dec - 02 Jan	AirAsia X
16 Dec - 05 Jan	AirAsia X
19 Dec - 31 Dec	AirAsia X
13 Dec - 09 Jan	AirAsia X
26 Dec - 19 Jan	AirAsia X
16 Dec - 11 Jan	AirAsia X
01 Dec - 06 Jan	Air China
16 Dec - 15 Jan	Hainan Airlines
08 Dec - 26 Dec	Thai Airways

Also check the deals for one-way flights from Sydney to Karachi 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 Karachi in December from $940

Return flights