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

Return flights

01 Dec - 17 Dec	KLM
01 Dec - 10 Dec	KLM
02 Dec - 17 Dec	KLM
03 Dec - 10 Dec	KLM
10 Dec - 21 Jan	KLM
10 Dec - 29 Dec	KLM
05 Dec - 21 Jan	KLM
06 Dec - 13 Dec	KLM
12 Dec - 23 Dec	KLM
12 Dec - 17 Jan	KLM
27 Dec - 12 Jan	KLM
14 Dec - 27 Dec	KLM
28 Dec - 28 Jan	KLM
07 Dec - 06 Jan	KLM
10 Dec - 04 Jan	KLM
24 Dec - 01 Jan	KLM
11 Dec - 09 Jan	British Airways
22 Dec - 29 Dec	KLM
24 Dec - 31 Dec	KLM
11 Dec - 04 Jan	British Airways

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 $978

Return flights