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

Return flights

10 Aug - 24 Aug	Pegasus Airlines
26 Aug - 31 Aug	Pegasus Airlines
18 Aug - 25 Aug	IndiGo
20 Aug - 25 Aug	IndiGo
09 Aug - 21 Aug	Pegasus Airlines
14 Aug - 26 Aug	Pegasus Airlines
11 Aug - 14 Aug	Pegasus Airlines
14 Aug - 21 Aug	Pegasus Airlines
18 Aug - 03 Sep	IndiGo
21 Aug - 26 Aug	IndiGo
17 Aug - 27 Aug	SalamAir
29 Aug - 03 Sep	IndiGo
28 Aug - 08 Sep	IndiGo
29 Aug - 06 Sep	IndiGo
28 Aug - 02 Sep	AJet
29 Aug - 07 Sep	Pegasus Airlines
15 Aug - 09 Sep	IndiGo
30 Aug - 19 Sep	IndiGo
29 Aug - 08 Sep	IndiGo
03 Aug - 01 Sep	Pegasus Airlines

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

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 August from 435€

Return flights