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

Return flights

07 Dec - 11 Dec	Turkish Airlines
07 Dec - 15 Dec	Turkish Airlines
07 Dec - 13 Dec	Gulf Air
10 Dec - 16 Dec	Wizz Air UK
07 Dec - 23 Dec	Gulf Air
07 Dec - 14 Dec	Turkish Airlines
07 Dec - 12 Dec	Turkish Airlines
09 Dec - 17 Dec	easyJet
09 Dec - 14 Dec	easyJet
09 Dec - 13 Dec	Vueling Airlines
30 Dec - 27 Jan	Wizz Air UK
09 Dec - 13 Jan	easyJet
31 Dec - 11 Jan	Turkish Airlines
10 Dec - 08 Jan	Turkmenistan Airlines
10 Dec - 17 Jan	Gulf Air
09 Dec - 12 Jan	easyJet
30 Dec - 11 Jan	Wizz Air UK
10 Dec - 10 Jan	Gulf Air
30 Dec - 08 Jan	Wizz Air UK
31 Dec - 24 Jan	China Eastern

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 585€

Return flights