AirHint found the following cheapest return flights from London (LCY) to Jakarta (CGK) in December 2025 (see full year).

Return flights

01 Dec - 07 Dec	KLM
02 Dec - 28 Dec	KLM
01 Dec - 14 Dec	Lufthansa
04 Dec - 21 Dec	ITA Airways
05 Dec - 20 Dec	ITA Airways
03 Dec - 14 Dec	KLM
01 Dec - 21 Dec	KLM
08 Dec - 21 Dec	KLM
01 Dec - 31 Dec	Lufthansa
30 Dec - 13 Jan	KLM
06 Dec - 14 Dec	KLM
24 Dec - 19 Jan	KLM
24 Dec - 18 Jan	KLM
24 Dec - 13 Jan	KLM
29 Dec - 11 Jan	KLM
28 Dec - 11 Jan	KLM
10 Dec - 11 Jan	SWISS
07 Dec - 01 Jan	KLM
30 Dec - 11 Jan	KLM
10 Dec - 07 Jan	KLM

Also check the deals for one-way flights from London to Jakarta 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 Jakarta in December from 635€

Return flights