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

Return flights

03 Sep - 18 Sep	Ryanair
02 Sep - 19 Sep	Wizz Air UK
21 Sep - 12 Oct	easyJet
16 Sep - 08 Oct	Ryanair
04 Sep - 07 Sep	easyJet
16 Sep - 10 Oct	Ryanair
01 Sep - 12 Sep	easyJet
16 Sep - 06 Oct	Ryanair
28 Sep - 06 Oct	easyJet
02 Sep - 23 Sep	Ryanair
16 Sep - 24 Sep	Ryanair
25 Sep - 05 Oct	easyJet
14 Sep - 28 Sep	easyJet
30 Sep - 10 Oct	Ryanair
14 Sep - 21 Sep	easyJet
09 Sep - 28 Sep	easyJet
02 Sep - 17 Sep	Ryanair
26 Sep - 06 Oct	Wizz Air UK
25 Sep - 08 Oct	Wizz Air UK
26 Sep - 12 Oct	Wizz Air UK

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 $733

Return flights