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

Return flights

25 Sep - 29 Sep	Etihad Airways
21 Sep - 28 Sep	AirAsia
03 Sep - 10 Sep	Turkish Airlines	direct
27 Sep - 04 Oct	AirAsia
21 Sep - 30 Sep	AirAsia
20 Sep - 28 Sep	AirAsia
29 Sep - 06 Oct	AirAsia
22 Sep - 26 Sep	Batik Air Malaysia
20 Sep - 25 Sep	AirAsia
25 Sep - 06 Oct	Etihad Airways
30 Sep - 07 Oct	Emirates
29 Sep - 07 Oct	Emirates
23 Sep - 29 Sep	AirAsia
17 Sep - 23 Sep	Emirates
30 Sep - 03 Oct	Emirates
30 Sep - 13 Oct	Emirates
26 Sep - 28 Sep	AirAsia
28 Sep - 02 Oct	Emirates
28 Sep - 08 Oct	Emirates
25 Sep - 01 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 383€

Return flights