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

Return flights

01 Dec - 15 Jan	Cebu Pacific
01 Dec - 14 Jan	Qatar Airways
02 Dec - 19 Dec	AirAsia X
01 Dec - 04 Jan	Qatar Airways
01 Dec - 10 Jan	Qatar Airways
02 Dec - 30 Dec	Qatar Airways
13 Dec - 19 Dec	AirAsia X
13 Dec - 02 Jan	AirAsia X
03 Dec - 02 Jan	Qatar Airways
25 Dec - 21 Jan	Virgin Australia
10 Dec - 01 Jan	Virgin Australia
19 Dec - 25 Jan	AirAsia X
05 Dec - 06 Jan	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 $1206

Return flights