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

Return flights

04 Dec - 29 Dec	SKY express
04 Dec - 11 Dec	China Eastern
01 Dec - 29 Dec	Air China
01 Dec - 15 Dec	China Eastern
03 Dec - 14 Dec	Wizz Air Malta
01 Dec - 14 Dec	Wizz Air Malta
04 Dec - 18 Jan	Air China
02 Dec - 30 Dec	Air China
01 Dec - 08 Dec	SWISS
03 Dec - 09 Dec	SWISS
03 Dec - 10 Dec	Air China
04 Dec - 01 Jan	China Eastern
01 Dec - 08 Jan	Wizz Air Malta
01 Dec - 07 Jan	Wizz Air Malta
07 Dec - 18 Jan	Air China
30 Dec - 20 Jan	Turkish Airlines
04 Dec - 14 Jan	Turkish Airlines
30 Dec - 13 Jan	Turkish Airlines
07 Dec - 11 Jan	Wizz Air UK
06 Dec - 22 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 472€

Return flights