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

Return flights

02 Oct - 12 Oct	IndiGo
19 Oct - 03 Nov	IndiGo
14 Oct - 17 Oct	Scoot
15 Oct - 21 Oct	Gulf Air
15 Oct - 23 Oct	Etihad Airways
29 Oct - 03 Nov	Etihad Airways
28 Oct - 31 Oct	Etihad Airways
28 Oct - 03 Nov	TransNusa
07 Oct - 13 Oct	Gulf Air
14 Oct - 22 Oct	Gulf Air
16 Oct - 26 Oct	Etihad Airways
17 Oct - 24 Oct	Gulf Air
25 Oct - 03 Nov	Gulf Air
24 Oct - 02 Nov	Gulf Air
24 Oct - 04 Nov	Gulf Air
30 Oct - 08 Nov	Gulf Air
14 Oct - 18 Oct	Gulf Air
27 Oct - 03 Nov	Gulf Air
27 Oct - 05 Nov	Gulf Air
31 Oct - 08 Nov	Gulf Air

Also check the deals for one-way flights from Singapore to Istanbul in October.

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 October from $264

Return flights