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

Return flights

07 Oct - 21 Oct	IndiGo
12 Oct - 20 Oct	IndiGo
14 Oct - 21 Oct	IndiGo
07 Oct - 20 Oct	IndiGo
14 Oct - 20 Oct	IndiGo
06 Oct - 20 Oct	IndiGo
06 Oct - 25 Oct	IndiGo
12 Oct - 21 Oct	IndiGo
02 Oct - 08 Oct	IndiGo
01 Oct - 08 Oct	IndiGo
06 Oct - 06 Nov	IndiGo
20 Oct - 02 Nov	flyadeal
15 Oct - 12 Nov	IndiGo
22 Oct - 02 Nov	Pegasus Airlines
15 Oct - 14 Nov	IndiGo
22 Oct - 04 Nov	flyadeal
21 Oct - 03 Nov	Pegasus Airlines
15 Oct - 10 Nov	IndiGo
30 Oct - 13 Nov	IndiGo
18 Oct - 02 Nov	Pegasus Airlines

Also check the deals for one-way flights from Istanbul to Singapore 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 Istanbul to Singapore in October from 308€

Return flights