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

Return flights

24 Sep - 29 Oct	Wizz Air UK
15 Sep - 23 Oct	Air China
21 Sep - 17 Oct	Air China
30 Sep - 21 Oct	China Eastern
25 Sep - 29 Oct	Wizz Air UK
08 Sep - 23 Oct	Air China
03 Sep - 04 Oct	China Eastern
15 Sep - 13 Oct	Air China
05 Sep - 14 Oct	Air China
03 Sep - 09 Oct	China Eastern
03 Sep - 18 Sep	Gulf Air
03 Sep - 25 Sep	Gulf Air
21 Sep - 25 Sep	Gulf Air
24 Sep - 30 Sep	Gulf Air
10 Sep - 18 Sep	Gulf Air
03 Sep - 11 Sep	Gulf Air
17 Sep - 23 Sep	Gulf Air
17 Sep - 30 Sep	Gulf Air
09 Sep - 24 Sep	Wizz Air Malta
10 Sep - 16 Sep	Gulf Air

Also check the deals for one-way flights from London to Singapore 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 London to Singapore in September from 427€

Return flights