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

Return flights

04 Dec - 16 Dec	Hainan Airlines
03 Dec - 15 Dec	Jetstar
04 Dec - 11 Dec	Batik Air Malaysia
01 Dec - 11 Dec	Scoot
01 Dec - 07 Dec	Scoot
09 Dec - 30 Jan	Jetstar
07 Dec - 12 Dec	Hainan Airlines
02 Dec - 23 Dec	Batik Air Malaysia
05 Dec - 12 Dec	Jetstar
02 Dec - 22 Dec	Batik Air Malaysia
02 Dec - 08 Dec	Batik Air Malaysia
06 Dec - 25 Jan	Jetstar
05 Dec - 30 Jan	Jetstar
07 Dec - 26 Jan	Hainan Airlines
06 Dec - 24 Jan	Jetstar
07 Dec - 24 Jan	Jetstar
05 Dec - 21 Jan	Virgin Australia
07 Dec - 22 Jan	Scoot
04 Dec - 11 Jan	Scoot
08 Dec - 20 Jan	Jetstar

Also check the deals for one-way flights from Sydney to Istanbul 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 Istanbul in December from $900

Return flights