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

Return flights

17 Sep - 28 Sep	Oman Air
19 Sep - 24 Sep	Oman Air
17 Sep - 24 Sep	Oman Air
04 Sep - 09 Sep	Oman Air
07 Sep - 16 Sep	Oman Air
07 Sep - 14 Sep	Oman Air
28 Sep - 09 Oct	Air Arabia
28 Sep - 10 Oct	Air Arabia
25 Sep - 02 Oct	Etihad Airways
26 Sep - 03 Oct	Etihad Airways
16 Sep - 22 Sep	Etihad Airways
24 Sep - 15 Oct	Etihad Airways
08 Sep - 11 Sep	Etihad Airways
24 Sep - 29 Sep	Etihad Airways
22 Sep - 25 Sep	Etihad Airways
08 Sep - 07 Oct	Etihad Airways
28 Sep - 03 Oct	Etihad Airways
28 Sep - 05 Oct	Singapore Airlines
27 Sep - 10 Oct	Etihad Airways
30 Sep - 15 Oct	Emirates

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 $465

Return flights