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

Return flights

22 Sep - 29 Sep	Cathay Pacific
23 Sep - 30 Sep	Air China
24 Sep - 01 Oct	Shenzhen Airlines
23 Sep - 28 Sep	Cathay Pacific
21 Sep - 26 Sep	Shenzhen Airlines
20 Sep - 28 Sep	Shenzhen Airlines
30 Sep - 06 Oct	Hainan Airlines
29 Sep - 06 Oct	Hainan Airlines
30 Sep - 12 Oct	Air Astana
24 Sep - 06 Oct	Hainan Airlines
26 Sep - 03 Oct	Shenzhen Airlines
28 Sep - 08 Oct	Hainan Airlines
28 Sep - 04 Oct	Air China
27 Sep - 06 Oct	Shenzhen Airlines
20 Sep - 07 Oct	Shandong Airlines
20 Sep - 21 Sep	Vietnam Airlines
19 Sep - 20 Sep	Hainan Airlines
20 Sep - 20 Sep	Emirates
24 Sep - 24 Sep	Air China
22 Sep - 29 Sep	Air China	direct

Also check the deals for one-way flights from Beijing to London 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 London in September from $981

Return flights