AirHint found the following cheapest return flights from Istanbul (IST) to Singapore (SIN) in August 2026 (see full year).

Return flights

25 Aug - 09 Sep	Qatar Airways
21 Aug - 30 Aug	AirAsia X
05 Aug - 01 Sep	AirAsia X
26 Aug - 31 Aug	Singapore Airlines	direct
05 Aug - 01 Sep	Turkish Airlines	direct
25 Aug - 09 Sep	Turkish Airlines	direct
21 Aug - 30 Aug	Turkish Airlines	direct
01 Aug - 11 Aug	IndiGo
14 Aug - 22 Aug	AirAsia X
01 Aug - 11 Aug	Turkish Airlines	direct
01 Aug - 09 Aug	Turkish Airlines	direct
13 Aug - 22 Aug	IndiGo
19 Aug - 21 Aug	IndiGo
13 Aug - 22 Aug	Turkish Airlines	direct

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 $638

Return flights