AirHint found the following cheapest return flights from Islamabad (ISB) to Istanbul (SAW) in September 2025 (see full year).

Return flights

13 Sep - 15 Sep	Flynas
15 Sep - 30 Sep	Flynas
11 Sep - 21 Sep	Flynas
03 Sep - 07 Sep	Flynas
06 Sep - 13 Sep	Flynas
11 Sep - 16 Sep	Flynas
03 Sep - 16 Sep	Flynas
04 Sep - 08 Sep	Flynas
14 Sep - 21 Sep	Flynas
04 Sep - 09 Sep	Flynas
15 Sep - 01 Oct	Flynas
29 Sep - 06 Oct	Flynas
24 Sep - 15 Oct	Flynas
22 Sep - 12 Oct	Flynas
18 Sep - 04 Oct	Flynas
09 Sep - 09 Oct	flydubai
25 Sep - 02 Oct	flydubai
23 Sep - 17 Oct	flydubai
25 Sep - 09 Oct	Qatar Airways
24 Sep - 10 Oct	Flynas

Also check the deals for one-way flights from Islamabad 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 Islamabad to Istanbul in September from $398

Return flights