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

Return flights

30 Sep - 09 Oct	Shenzhen Airlines
06 Sep - 16 Sep	Etihad Airways
07 Sep - 14 Sep	Etihad Airways
14 Sep - 28 Sep	Air China
22 Sep - 14 Oct	Air China
07 Sep - 21 Sep	Air China
01 Sep - 16 Sep	Etihad Airways
06 Sep - 20 Sep	Etihad Airways
13 Sep - 23 Sep	Air China
05 Sep - 17 Sep	Etihad Airways
01 Sep - 23 Sep	Air China
03 Sep - 19 Sep	Etihad Airways
02 Sep - 07 Oct	Lufthansa
25 Sep - 02 Oct	Etihad Airways
28 Sep - 07 Oct	Lufthansa
06 Sep - 11 Oct	Lufthansa
24 Sep - 09 Oct	Finnair
25 Sep - 08 Oct	Lufthansa
06 Sep - 11 Oct	Singapore Airlines	direct
28 Sep - 07 Oct	Singapore Airlines	direct

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 512€

Return flights