Cheapest return flights from London to Singapore in December from $548

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

Return flights

05 Dec - 23 Dec Shenzhen Airlines
01 Dec - 07 Dec Shenzhen Airlines
05 Dec - 13 Dec Shenzhen Airlines
05 Dec - 14 Dec Shenzhen Airlines
03 Dec - 09 Dec Shenzhen Airlines
05 Dec - 12 Dec Shenzhen Airlines
05 Dec - 21 Dec Shenzhen Airlines
01 Dec - 18 Dec Shenzhen Airlines
05 Dec - 11 Dec Shenzhen Airlines
05 Dec - 09 Dec Shenzhen Airlines
04 Dec - 14 Jan Lufthansa
04 Dec - 29 Jan Finnair
08 Dec - 13 Jan Turkish Airlines
31 Dec - 14 Jan Air France
30 Dec - 30 Jan Gulf Air
29 Dec - 23 Jan Shenzhen Airlines
04 Dec - 09 Jan KLM
06 Dec - 09 Jan Air France
04 Dec - 01 Jan KLM
31 Dec - 17 Jan Air France

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

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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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