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

Return flights

28 Dec - 15 Jan	Turkish Airlines	direct
28 Dec - 13 Jan	Turkish Airlines	direct
28 Dec - 11 Jan	Gulf Air
25 Dec - 24 Jan	Gulf Air
31 Dec - 11 Jan	Gulf Air
30 Dec - 09 Jan	Gulf Air
30 Dec - 31 Jan	Gulf Air
30 Dec - 08 Jan	Gulf Air
29 Dec - 07 Jan	Emirates
01 Dec - 08 Dec	Etihad Airways
28 Dec - 11 Jan	Turkish Airlines	direct
07 Dec - 10 Dec	Emirates
11 Dec - 17 Dec	China Eastern
17 Dec - 23 Dec	Emirates
17 Dec - 24 Dec	Emirates
16 Dec - 24 Dec	Emirates
02 Dec - 08 Dec	AirAsia
17 Dec - 28 Dec	Emirates
16 Dec - 22 Dec	Emirates
04 Dec - 08 Dec	AirAsia

Also check the deals for one-way flights from Singapore 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 Singapore to Istanbul in December from $528

Return flights