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

Return flights

21 Sep - 30 Sep	Air Astana
21 Sep - 26 Sep	Cathay Pacific
25 Sep - 01 Oct	Shenzhen Airlines
24 Sep - 04 Oct	Air China
22 Sep - 29 Sep	Hainan Airlines
29 Sep - 11 Oct	Air China
19 Sep - 26 Sep	Air China
28 Sep - 04 Oct	Air China
24 Sep - 27 Sep	Air China
26 Sep - 03 Oct	Shenzhen Airlines
24 Sep - 25 Sep	Air China
29 Sep - 03 Oct	Air China
27 Sep - 09 Oct	Shenzhen Airlines
29 Sep - 04 Oct	China Eastern
27 Sep - 04 Oct	Air China
25 Sep - 09 Oct	Shenzhen Airlines
21 Sep - 26 Sep	Air China	direct
24 Sep - 25 Sep	Turkish Airlines	direct
21 Sep - 30 Sep	Air China	direct
24 Sep - 27 Sep	Turkish Airlines	direct

Also check the deals for one-way flights from Beijing 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 Beijing to Istanbul in September from 515€

Return flights