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

Return flights

04 Dec - 09 Dec	Aegean Airlines
02 Dec - 15 Dec	Air China
02 Dec - 05 Dec	Air China
04 Dec - 16 Dec	Aegean Airlines
01 Dec - 26 Dec	Etihad Airways
02 Dec - 25 Dec	Etihad Airways
02 Dec - 26 Dec	Etihad Airways
01 Dec - 08 Dec	Air India
02 Dec - 14 Dec	Air China
02 Dec - 16 Dec	Etihad Airways
30 Dec - 13 Jan	Saudia
08 Dec - 19 Jan	Saudia
08 Dec - 22 Jan	Air India
29 Dec - 15 Jan	Qatar Airways
11 Dec - 29 Jan	Aegean Airlines
31 Dec - 17 Jan	Qatar Airways
04 Dec - 11 Jan	Etihad Airways
06 Dec - 12 Jan	Etihad Airways
11 Dec - 30 Jan	British Airways
06 Dec - 13 Jan	Etihad 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 515€

Return flights