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

Return flights

01 Dec - 31 Jan	Lufthansa
02 Dec - 09 Dec	Lufthansa
01 Dec - 09 Dec	Lufthansa
02 Dec - 08 Dec	Lufthansa
02 Dec - 16 Jan	Lufthansa
05 Dec - 19 Jan	SWISS
03 Dec - 10 Dec	SWISS
03 Dec - 13 Jan	SWISS
05 Dec - 18 Jan	SWISS
29 Dec - 20 Jan	KLM
01 Dec - 07 Dec	Lufthansa
02 Dec - 12 Dec	Lufthansa
01 Dec - 11 Dec	Lufthansa
30 Dec - 20 Jan	Lufthansa
04 Dec - 15 Dec	SWISS
01 Dec - 21 Dec	Lufthansa
05 Dec - 16 Dec	SWISS
29 Dec - 14 Jan	Lufthansa
29 Dec - 15 Jan	Lufthansa
05 Dec - 24 Jan	SWISS

Also check the deals for one-way flights from London to Johannesburg 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 Johannesburg in December from $770

Return flights