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

Return flights

09 Apr - 15 Apr	AirAsia
16 Apr - 24 Apr	AirAsia
07 Apr - 20 Apr	AirAsia
29 Apr - 07 May	Gulf Air
18 Apr - 22 Apr	AirAsia
07 Apr - 20 Apr	Turkish Airlines	direct
07 Apr - 13 Apr	Gulf Air
07 Apr - 14 Apr	Gulf Air
21 Apr - 19 May	Gulf Air
12 Apr - 20 Apr	Gulf Air
01 Apr - 09 Apr	Gulf Air
17 Apr - 22 Apr	Gulf Air
16 Apr - 05 May	Gulf Air
18 Apr - 07 May	Gulf Air
25 Apr - 02 May	Gulf Air
23 Apr - 05 May	Etihad Airways
23 Apr - 04 May	Etihad Airways
16 Apr - 05 May	Turkish Airlines	direct
29 Apr - 07 May	Turkish Airlines	direct
18 Apr - 07 May	Turkish Airlines	direct

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

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 April from $431

Return flights