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

Return flights

02 Dec - 04 Dec	Jetstar
01 Dec - 09 Dec	Jetstar
01 Dec - 12 Dec	Jetstar
04 Dec - 12 Dec	Batik Air Malaysia
06 Dec - 10 Dec	AirAsia X
01 Dec - 23 Dec	China Southern
01 Dec - 15 Dec	China Southern
05 Dec - 29 Dec	Virgin Australia
07 Dec - 17 Dec	China Southern
01 Dec - 08 Dec	China Southern
04 Dec - 04 Jan	Batik Air Malaysia
29 Dec - 25 Jan	Sichuan Airlines
11 Dec - 20 Jan	Garuda Indonesia
11 Dec - 13 Jan	Batik Air Malaysia
28 Dec - 07 Jan	China Southern
10 Dec - 07 Jan	China Southern
26 Dec - 01 Jan	China Southern
01 Dec - 30 Jan	China Southern
26 Dec - 10 Jan	China Southern
11 Dec - 06 Jan	Batik Air Malaysia

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 779€

Return flights