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

Return flights

11 Sep - 25 Sep	Air China
01 Sep - 06 Sep	Air China
15 Sep - 18 Sep	Air China
04 Sep - 18 Sep	Air China
06 Sep - 13 Sep	Air China
06 Sep - 18 Sep	Air China
01 Sep - 13 Sep	Air China
16 Sep - 23 Sep	Air China
01 Sep - 08 Sep	Air China
08 Sep - 24 Sep	Air China
30 Sep - 05 Oct	Air China
21 Sep - 05 Oct	Air China
11 Sep - 04 Oct	Air China
30 Sep - 10 Oct	Shenzhen Airlines
30 Sep - 07 Oct	Air China
25 Sep - 03 Oct	Air China
22 Sep - 06 Oct	Air China
30 Sep - 08 Oct	Shenzhen Airlines
27 Sep - 04 Oct	Shenzhen Airlines
18 Sep - 03 Oct	Shenzhen Airlines

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 499€

Return flights