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

Return flights

22 Dec - 11 Jan	Scoot
01 Dec - 07 Dec	Scoot
26 Dec - 01 Jan	Scoot
01 Dec - 04 Dec	Scoot
19 Dec - 18 Jan	Scoot
08 Dec - 01 Jan	Scoot
15 Dec - 01 Jan	Scoot
25 Dec - 14 Jan	Gulf Air
05 Dec - 08 Jan	Scoot
01 Dec - 11 Dec	Scoot
22 Dec - 12 Jan	Turkish Airlines
22 Dec - 13 Jan	Turkish Airlines
05 Dec - 14 Dec	Scoot
22 Dec - 01 Jan	Scoot
15 Dec - 29 Dec	Qatar Airways
08 Dec - 12 Dec	Scoot
04 Dec - 07 Dec	Emirates
25 Dec - 31 Dec	Gulf Air
13 Dec - 31 Dec	Gulf Air
08 Dec - 28 Dec	Scoot

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 $639

Return flights