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

Return flights

01 Dec - 08 Jan	Air China
01 Dec - 02 Jan	Air China
02 Dec - 02 Jan	Air China
02 Dec - 08 Jan	Air China
02 Dec - 09 Jan	Air China
01 Dec - 20 Jan	Air China
01 Dec - 27 Jan	Air China
04 Dec - 02 Jan	Air China
04 Dec - 08 Jan	Air China
02 Dec - 09 Dec	Air China
04 Dec - 22 Jan	Air China
04 Dec - 08 Dec	easyJet
04 Dec - 09 Dec	easyJet
01 Dec - 08 Dec	Wizz Air UK
07 Dec - 13 Dec	Gulf Air
10 Dec - 13 Dec	Gulf Air
10 Dec - 27 Dec	Gulf Air
04 Dec - 30 Dec	easyJet
05 Dec - 13 Dec	Gulf Air
02 Dec - 23 Dec	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 402€

Return flights