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

Return flights

23 Dec - 23 Jan	Turkish Airlines
18 Dec - 06 Jan	Turkish Airlines
11 Dec - 08 Jan	Turkish Airlines
22 Dec - 08 Jan	Emirates
17 Dec - 12 Jan	Emirates
15 Dec - 20 Jan	Emirates
22 Dec - 10 Jan	Emirates
19 Dec - 06 Jan	Turkish Airlines
04 Dec - 07 Dec	Emirates
23 Dec - 05 Jan	Emirates
10 Dec - 14 Jan	Emirates
25 Dec - 31 Dec	Gulf Air
23 Dec - 31 Dec	Gulf Air
20 Dec - 31 Dec	Gulf Air
17 Dec - 25 Dec	Emirates
18 Dec - 29 Dec	Scoot Tigerair
18 Dec - 25 Dec	Emirates
04 Dec - 10 Dec	Turkish Airlines
24 Dec - 29 Dec	Qatar Airways
19 Dec - 31 Dec	Turkish Airlines

Also check the deals for one-way flights from Singapore to London 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 Singapore to London in December from $740

Return flights