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

Return flights

09 May - 20 May	AirAsia
09 May - 13 May	AirAsia
21 May - 01 Jun	Etihad Airways
19 May - 23 May	Etihad Airways
09 May - 17 May	Etihad Airways
01 May - 07 May	Etihad Airways
08 May - 15 May	Etihad Airways
06 May - 16 May	Etihad Airways
29 May - 04 Jun	Etihad Airways
29 May - 05 Jun	Etihad Airways
23 May - 07 Jun	AirAsia
23 May - 05 Jun	AirAsia
09 May - 25 May	AirAsia
09 May - 15 May	AirAsia
01 May - 07 May	Turkish Airlines	direct
22 May - 07 Jun	Singapore Airlines	direct
21 May - 10 Jun	Emirates
31 May - 19 Jun	AirAsia
16 May - 05 Jun	AirAsia
31 May - 07 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 $559

Return flights