AirHint found the following cheapest return flights from Kuala Lumpur (KUL) to Istanbul (IST) in September 2025 (see full year).

Return flights

18 Sep - 03 Oct	Oman Air
14 Sep - 17 Sep	Oman Air
23 Sep - 05 Oct	Etihad Airways
22 Sep - 06 Oct	Etihad Airways
17 Sep - 29 Sep	Etihad Airways
21 Sep - 21 Oct	Etihad Airways
29 Sep - 13 Oct	Etihad Airways
25 Sep - 01 Oct	Etihad Airways
22 Sep - 01 Oct	Etihad Airways
26 Sep - 03 Oct	Etihad Airways
04 Sep - 21 Sep	Etihad Airways
29 Sep - 05 Oct	Air Arabia
16 Sep - 21 Sep	Etihad Airways
18 Sep - 21 Sep	Etihad Airways
22 Sep - 07 Oct	Emirates
19 Sep - 30 Sep	Emirates
15 Sep - 26 Sep	AirAsia X
18 Sep - 29 Sep	Emirates
18 Sep - 30 Sep	Emirates
16 Sep - 23 Sep	Etihad Airways

Also check the deals for one-way flights from Kuala Lumpur to Istanbul in September.

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 Kuala Lumpur to Istanbul in September from $461

Return flights