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

Return flights

24 Sep - 24 Oct	Air China
15 Sep - 15 Oct	Air China
08 Sep - 16 Oct	Air China
01 Sep - 16 Sep	Wizz Air UK
01 Sep - 20 Sep	Wizz Air UK
04 Sep - 11 Sep	Wizz Air UK
01 Sep - 11 Sep	Wizz Air UK
01 Sep - 06 Sep	Wizz Air UK
03 Sep - 11 Sep	Wizz Air UK
08 Sep - 11 Sep	Wizz Air Malta
01 Sep - 27 Oct	Wizz Air UK
19 Sep - 18 Oct	Gulf Air
02 Sep - 09 Sep	Wizz Air UK
01 Sep - 09 Sep	Wizz Air UK
15 Sep - 20 Oct	Wizz Air Malta
08 Sep - 23 Sep	Wizz Air Malta
28 Sep - 11 Oct	Gulf Air
28 Sep - 04 Oct	Gulf Air
20 Sep - 12 Oct	Air China
06 Sep - 01 Oct	Wizz Air UK

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 $596

Return flights