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

Return flights

27 Sep - 11 Oct	Turkmenistan Airlines
13 Sep - 11 Oct	Turkmenistan Airlines
15 Sep - 22 Sep	MIAT Mongolian Airlines
17 Sep - 24 Sep	China Eastern
23 Sep - 30 Sep	Emirates
11 Sep - 18 Sep	Emirates
17 Sep - 26 Sep	Emirates
17 Sep - 13 Oct	Emirates
24 Sep - 01 Oct	Emirates
24 Sep - 29 Oct	Emirates
01 Sep - 06 Sep	Hainan Airlines
02 Sep - 15 Sep	China Eastern
04 Sep - 18 Sep	China Eastern
02 Sep - 09 Sep	China Eastern
19 Sep - 02 Oct	Emirates
13 Sep - 20 Sep	Hainan Airlines
25 Sep - 01 Oct	Emirates
27 Sep - 04 Oct	Air China
24 Sep - 01 Oct	Air China	direct
18 Sep - 05 Oct	Emirates

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 $289

Return flights