AirHint found the following cheapest return flights from Hong Kong (HKG) to Istanbul (IST) in September 2025 (see full year).

Return flights

13 Sep - 19 Sep	Air China
16 Sep - 19 Sep	Air China
05 Sep - 13 Sep	China Southern
15 Sep - 29 Sep	IndiGo
01 Sep - 06 Sep	China Southern
15 Sep - 22 Sep	IndiGo
06 Sep - 21 Sep	HK Express
05 Sep - 07 Sep	Emirates
13 Sep - 21 Sep	Emirates
09 Sep - 16 Sep	Emirates
23 Sep - 01 Oct	Emirates
20 Sep - 20 Oct	Emirates
25 Sep - 15 Oct	Emirates
17 Sep - 03 Oct	Emirates
20 Sep - 02 Oct	Emirates
20 Sep - 01 Oct	Emirates
20 Sep - 03 Oct	Emirates
30 Sep - 08 Oct	IndiGo
26 Sep - 01 Oct	IndiGo
29 Sep - 07 Oct	IndiGo

Also check the deals for one-way flights from Hong Kong 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 Hong Kong to Istanbul in September from $449

Return flights