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

Return flights

27 Sep - 06 Oct	Wizz Air UK
15 Sep - 26 Sep	Ryanair
27 Sep - 08 Oct	Wizz Air UK
09 Sep - 18 Sep	Ryanair
17 Sep - 24 Sep	Ryanair
23 Sep - 28 Sep	Wizz Air
23 Sep - 29 Sep	Wizz Air
03 Sep - 24 Sep	Fly One
02 Sep - 16 Sep	Wizz Air UK
16 Sep - 24 Sep	Wizz Air UK
23 Sep - 30 Sep	Wizz Air
02 Sep - 30 Sep	Wizz Air UK
30 Sep - 06 Oct	Wizz Air UK
27 Sep - 25 Oct	Wizz Air UK
27 Sep - 04 Oct	Wizz Air UK
17 Sep - 08 Oct	Fly One
30 Sep - 14 Oct	Ryanair
29 Sep - 08 Oct	easyJet
28 Sep - 20 Oct	easyJet
29 Sep - 13 Oct	Ryanair

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 579€

Return flights