AirHint found the following cheapest return flights from London (LHR) to Singapore (SIN) in September 2026 (see full year).

Return flights

30 Sep - 18 Oct	Shenzhen Airlines
23 Sep - 04 Oct	Shenzhen Airlines
30 Sep - 11 Oct	Shenzhen Airlines
21 Sep - 04 Oct	Shenzhen Airlines
20 Sep - 04 Oct	Shenzhen Airlines
07 Sep - 21 Sep	Gulf Air
09 Sep - 14 Sep	Gulf Air
13 Sep - 23 Sep	Gulf Air
02 Sep - 24 Sep	Gulf Air
02 Sep - 22 Sep	Gulf Air
30 Sep - 07 Oct	Gulf Air
01 Sep - 14 Sep	Gulf Air
02 Sep - 09 Sep	Air China
14 Sep - 18 Sep	Air China
10 Sep - 26 Sep	Gulf Air
13 Sep - 26 Sep	Gulf Air
29 Sep - 04 Oct	Gulf Air
21 Sep - 03 Oct	Gulf Air
26 Sep - 05 Oct	Gulf Air
28 Sep - 12 Oct	Lufthansa

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 475€

Return flights