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

Return flights

24 Sep - 29 Oct	VietJet Air
23 Sep - 30 Sep	VietJet Air
23 Sep - 15 Oct	Vietnam Airlines
25 Sep - 15 Oct	VietJet Air
21 Sep - 15 Oct	9 Air
20 Sep - 15 Oct	VietJet Air
25 Sep - 07 Oct	Thai AirAsia
24 Sep - 27 Sep	VietJet Air
22 Sep - 29 Sep	Thai AirAsia
26 Sep - 07 Oct	Thai AirAsia
27 Sep - 11 Oct	Vietnam Airlines
25 Sep - 11 Oct	VietJet Air
26 Sep - 17 Oct	Thai AirAsia
19 Sep - 21 Sep	Vietnam Airlines
22 Sep - 29 Sep	China Southern	direct
19 Sep - 21 Sep	China Southern	direct

Also check the deals for one-way flights from Guangzhou 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 Guangzhou to London in September from 765€

Return flights