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

Return flights

01 Dec - 19 Jan	Virgin Australia
01 Dec - 30 Dec	Scoot Tigerair
01 Dec - 23 Jan	Scoot Tigerair
01 Dec - 31 Jan	Scoot Tigerair
02 Dec - 01 Jan	Cebu Pacific
09 Dec - 25 Jan	Virgin Australia
10 Dec - 20 Jan	Virgin Australia
06 Dec - 01 Jan	VietJet Air
10 Dec - 25 Jan	Virgin Australia
16 Dec - 30 Jan	VietJet Air
10 Dec - 14 Jan	Virgin Australia
12 Dec - 26 Dec	Thai Airways
17 Dec - 24 Dec	Thai Airways
22 Dec - 31 Dec	Thai Airways
12 Dec - 25 Dec	Qatar Airways

Also check the deals for one-way flights from Sydney to Islamabad 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 Islamabad in December from $1123

Return flights