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

Return flights

05 Sep - 03 Oct	Ryanair
18 Sep - 03 Oct	Ryanair
23 Sep - 13 Oct	Ryanair
22 Sep - 30 Sep	Ryanair
09 Sep - 22 Sep	Ryanair
08 Sep - 22 Sep	Ryanair
20 Sep - 27 Sep	Ryanair
11 Sep - 26 Sep	Ryanair
30 Sep - 17 Oct	Ryanair
05 Sep - 19 Sep	Ryanair
09 Sep - 19 Sep	Ryanair
02 Sep - 19 Sep	Ryanair
26 Sep - 01 Oct	Turkish Airlines
20 Sep - 03 Oct	Turkish Airlines
23 Sep - 03 Oct	Turkish Airlines
25 Sep - 09 Oct	Turkish Airlines
02 Sep - 16 Sep	Ryanair
05 Sep - 12 Sep	Ryanair
25 Sep - 04 Oct	Turkish Airlines
27 Sep - 05 Oct	Turkish 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 $679

Return flights