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

Return flights

16 Sep - 24 Sep	Gulf Air
25 Sep - 28 Sep	Gulf Air
18 Sep - 03 Oct	Gulf Air
13 Sep - 19 Sep	Gulf Air
30 Sep - 05 Oct	Gulf Air
23 Sep - 03 Oct	Gulf Air
13 Sep - 21 Sep	Gulf Air
18 Sep - 28 Sep	Gulf Air
13 Sep - 28 Sep	Gulf Air
20 Sep - 08 Oct	Gulf Air
20 Sep - 31 Oct	Gulf Air
22 Sep - 30 Sep	Emirates
24 Sep - 02 Oct	Emirates
22 Sep - 29 Sep	Emirates
17 Sep - 28 Sep	Emirates
18 Sep - 29 Sep	Emirates
29 Sep - 06 Oct	Emirates
24 Sep - 09 Oct	Emirates
30 Sep - 07 Oct	Emirates
29 Sep - 12 Oct	Emirates

Also check the deals for one-way flights from Singapore 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 Singapore to London in September from $685

Return flights