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

Return flights

08 Oct - 12 Oct	IndiGo
07 Oct - 14 Oct	IndiGo
01 Oct - 07 Oct	IndiGo
01 Oct - 12 Oct	IndiGo
07 Oct - 13 Oct	IndiGo
07 Oct - 10 Oct	IndiGo
20 Oct - 29 Oct	IndiGo
11 Oct - 15 Oct	IndiGo
10 Oct - 22 Oct	AirAsia
03 Oct - 10 Oct	IndiGo
15 Oct - 07 Nov	Scoot
27 Oct - 03 Nov	Thai Lion Air
19 Oct - 03 Nov	Scoot
24 Oct - 04 Nov	Etihad Airways
26 Oct - 02 Nov	Air India
27 Oct - 02 Nov	Gulf Air
25 Oct - 01 Nov	Air India
24 Oct - 11 Nov	Gulf Air
12 Oct - 01 Nov	Gulf Air
25 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 322€

Return flights