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

Return flights

02 Dec - 27 Jan	SWISS
03 Dec - 20 Jan	SWISS
01 Dec - 04 Dec	SWISS
03 Dec - 19 Jan	SWISS
02 Dec - 25 Dec	SWISS
02 Dec - 09 Dec	SWISS
02 Dec - 23 Dec	SWISS
03 Dec - 11 Dec	SWISS
03 Dec - 07 Dec	SWISS
03 Dec - 18 Dec	Lufthansa
01 Dec - 07 Dec	SWISS
03 Dec - 14 Dec	Lufthansa
01 Dec - 15 Dec	SWISS
25 Dec - 14 Jan	Etihad Airways
31 Dec - 23 Jan	Air France
05 Dec - 18 Jan	KLM
31 Dec - 29 Jan	Air France
05 Dec - 17 Jan	Etihad Airways
25 Dec - 13 Jan	Etihad Airways
02 Dec - 20 Jan	Kenya Airways

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 $600

Return flights