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

Return flights

07 Dec - 13 Dec	Wizz Air UK
07 Dec - 11 Dec	Wizz Air UK
11 Dec - 13 Jan	Wizz Air UK
04 Dec - 08 Dec	easyJet
03 Dec - 08 Dec	Wizz Air Malta
13 Dec - 14 Jan	Wizz Air UK
02 Dec - 07 Dec	Wizz Air Malta
04 Dec - 10 Dec	easyJet
13 Dec - 20 Dec	easyJet
16 Dec - 23 Dec	Wizz Air
24 Dec - 31 Dec	easyJet
20 Dec - 30 Dec	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 $683

Return flights