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

Return flights

10 Dec - 17 Dec	Air China
17 Dec - 24 Dec	Air China
11 Dec - 18 Dec	Batik Air Malaysia
02 Dec - 07 Dec	IndiGo
31 Dec - 07 Jan	Air China
15 Dec - 05 Jan	China Southern
01 Dec - 14 Dec	Malaysia Airlines
04 Dec - 14 Dec	Singapore Airlines
21 Dec - 02 Jan	Jetstar
15 Dec - 08 Jan	Garuda Indonesia
21 Dec - 03 Jan	China Southern
24 Dec - 02 Jan	Air China
23 Dec - 29 Dec	China Southern
11 Dec - 02 Jan	China Southern
24 Dec - 08 Jan	Jetstar
18 Dec - 05 Jan	IndiGo
12 Dec - 12 Jan	IndiGo
26 Dec - 31 Dec	Etihad Airways
19 Dec - 26 Dec	Air China
11 Dec - 21 Dec	Qatar Airways

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 1025€

Return flights