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

Return flights

16 Sep - 24 Sep	Oman Air
17 Sep - 24 Sep	Oman Air
26 Sep - 01 Oct	Oman Air
27 Sep - 04 Oct	Etihad Airways
23 Sep - 30 Sep	Etihad Airways
25 Sep - 06 Oct	Etihad Airways
20 Sep - 30 Sep	Etihad Airways
05 Sep - 13 Sep	Etihad Airways
16 Sep - 31 Oct	Etihad Airways
16 Sep - 26 Sep	Etihad Airways
19 Sep - 29 Sep	Etihad Airways
26 Sep - 03 Oct	Etihad Airways
18 Sep - 25 Sep	Etihad Airways
17 Sep - 26 Sep	Etihad Airways
24 Sep - 30 Sep	Etihad Airways
17 Sep - 03 Oct	Etihad Airways
25 Sep - 12 Oct	Etihad Airways
27 Sep - 06 Oct	Etihad Airways
29 Sep - 05 Oct	Etihad Airways
30 Sep - 05 Oct	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 397€

Return flights