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

Return flights

03 Dec - 05 Jan	Air China
01 Dec - 07 Jan	Air China
04 Dec - 06 Jan	Air China
04 Dec - 26 Jan	easyJet
04 Dec - 09 Dec	easyJet
03 Dec - 02 Jan	Air China
03 Dec - 01 Jan	Air China
04 Dec - 10 Dec	easyJet
11 Dec - 30 Jan	easyJet
03 Dec - 11 Dec	Gulf Air
02 Dec - 16 Dec	Wizz Air UK
02 Dec - 17 Dec	Wizz Air UK
07 Dec - 02 Jan	Air China
11 Dec - 22 Dec	easyJet
11 Dec - 24 Dec	easyJet
03 Dec - 09 Dec	Gulf Air
01 Dec - 09 Dec	easyJet
04 Dec - 29 Dec	easyJet
04 Dec - 15 Jan	easyJet
11 Dec - 31 Jan	easyJet

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 $495

Return flights