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

Return flights

15 Sep - 28 Oct	Wizz Air UK
27 Sep - 28 Oct	Wizz Air Malta
22 Sep - 15 Oct	Air China
09 Sep - 15 Oct	Air China
24 Sep - 10 Oct	Wizz Air UK
27 Sep - 15 Oct	Wizz Air UK
27 Sep - 10 Oct	Wizz Air UK
22 Sep - 24 Oct	Air China
18 Sep - 25 Sep	Wizz Air UK
27 Sep - 14 Oct	Wizz Air UK
24 Sep - 18 Oct	Wizz Air UK
15 Sep - 25 Sep	Wizz Air UK
03 Sep - 16 Sep	Wizz Air UK
22 Sep - 29 Sep	Air China
14 Sep - 18 Sep	Gulf Air
10 Sep - 25 Sep	Gulf Air
17 Sep - 23 Sep	Gulf Air
03 Sep - 11 Sep	Wizz Air UK
14 Sep - 23 Sep	Gulf Air
07 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 456€

Return flights