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

Return flights

05 Dec - 29 Dec	Air China
04 Dec - 30 Dec	Air China
02 Dec - 30 Dec	Air China
04 Dec - 28 Dec	Air China
01 Dec - 28 Dec	Air China
03 Dec - 28 Dec	Air China
05 Dec - 28 Dec	Air China
04 Dec - 08 Dec	SKY express
04 Dec - 12 Jan	Wizz Air UK
04 Dec - 09 Dec	Wizz Air UK
05 Dec - 26 Dec	Air China
28 Dec - 31 Jan	Gulf Air
04 Dec - 11 Jan	Wizz Air UK
05 Dec - 11 Jan	Wizz Air UK
05 Dec - 12 Jan	Wizz Air UK
08 Dec - 29 Jan	Wizz Air UK
09 Dec - 08 Jan	Wizz Air UK
10 Dec - 08 Jan	Wizz Air Malta
07 Dec - 05 Jan	Wizz Air UK
05 Dec - 07 Jan	Wizz Air UK

Also check the deals for one-way flights from London to Singapore in December.

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 December from 487€

Return flights