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

Return flights

10 May - 14 May	Gulf Air
01 May - 15 May	Gulf Air
22 May - 01 Jun	Gulf Air
26 May - 04 Jun	Gulf Air
09 May - 18 May	AirAsia
09 May - 20 May	AirAsia
07 May - 21 May	Etihad Airways
04 May - 18 May	Etihad Airways
03 May - 17 May	Etihad Airways
21 May - 01 Jun	Etihad Airways
09 May - 17 May	Etihad Airways
01 May - 07 May	Etihad Airways
10 May - 14 May	Turkish Airlines	direct
21 May - 01 Jun	Turkish Airlines	direct
30 May - 14 Jun	AirAsia
30 May - 10 Jun	AirAsia
30 May - 15 Jun	AirAsia

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

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 May from 418€

Return flights