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

Return flights

02 Dec - 17 Dec	AirAsia X
05 Dec - 17 Dec	AirAsia X
02 Dec - 19 Dec	AirAsia X
05 Dec - 19 Dec	AirAsia X
06 Dec - 17 Dec	AirAsia X
06 Dec - 19 Dec	AirAsia X
06 Dec - 26 Dec	AirAsia X
09 Dec - 17 Dec	AirAsia X
02 Dec - 12 Dec	AirAsia X
02 Dec - 08 Dec	AirAsia X
01 Dec - 31 Jan	Qatar Airways
22 Dec - 11 Jan	Air China
04 Dec - 27 Jan	Virgin Australia
08 Dec - 27 Jan	Air China
30 Dec - 04 Jan	AirAsia X
30 Dec - 18 Jan	AirAsia X
04 Dec - 20 Jan	Thai Airways
21 Dec - 02 Jan	Jetstar
29 Dec - 04 Jan	AirAsia X
29 Dec - 18 Jan	AirAsia X

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 $1243

Return flights