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

Return flights

16 Dec - 23 Dec	Vueling Airlines
31 Dec - 20 Jan	China Eastern
30 Dec - 19 Jan	China Eastern
31 Dec - 19 Jan	China Eastern
31 Dec - 17 Jan	Ryanair
31 Dec - 13 Jan	easyJet
31 Dec - 09 Jan	Ryanair
24 Dec - 14 Jan	SWISS
25 Dec - 11 Jan	Vueling Airlines
29 Dec - 19 Jan	China Eastern
29 Dec - 26 Jan	easyJet
22 Dec - 27 Dec	Vueling Airlines
14 Dec - 25 Dec	Iberia Express
23 Dec - 30 Dec	easyJet
24 Dec - 27 Dec	easyJet
25 Dec - 30 Dec	Vueling Airlines
12 Dec - 21 Dec	Vueling Airlines
14 Dec - 21 Dec	Iberia Express
13 Dec - 27 Dec	easyJet
12 Dec - 30 Dec	Gulf Air

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.

Book a cheap hotel in Singapore

Cheap car rent in Singapore

Cheapest return flights from London to Singapore in December from $841

Return flights