Cheapest return flights from London to Singapore in December from 626€

Best time to book flights for London (LHR) to Singapore (SIN) flights at AirHint

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

Return flights

05 Dec - 27 Dec Air China
01 Dec - 15 Dec Lufthansa
01 Dec - 08 Dec Singapore Airlines direct
01 Dec - 15 Dec Singapore Airlines direct
01 Dec - 14 Dec Singapore Airlines direct
04 Dec - 08 Dec SWISS
07 Dec - 15 Dec Aegean Airlines
01 Dec - 08 Jan SWISS
31 Dec - 20 Jan Turkish Airlines
07 Dec - 22 Jan Turkish Airlines
30 Dec - 12 Jan Air China
08 Dec - 15 Dec Air India
09 Dec - 23 Dec Thai Airways
08 Dec - 19 Dec Air India
29 Dec - 15 Jan Air China
29 Dec - 18 Jan Air China
27 Dec - 08 Jan Thai Airways
20 Dec - 10 Jan Thai Airways
13 Dec - 02 Jan Thai Airways
25 Dec - 01 Jan Thai Airways

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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