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

Return flights

02 Dec - 15 Jan	SWISS
01 Dec - 14 Jan	SWISS
06 Dec - 14 Dec	SWISS
05 Dec - 09 Dec	Lufthansa
04 Dec - 08 Dec	SWISS
04 Dec - 07 Dec	SWISS
04 Dec - 09 Dec	SWISS
04 Dec - 11 Dec	Lufthansa
01 Dec - 14 Dec	Lufthansa
04 Dec - 15 Jan	SWISS
05 Dec - 15 Dec	Lufthansa
04 Dec - 10 Dec	Lufthansa
09 Dec - 14 Dec	Lufthansa
24 Dec - 13 Jan	Lufthansa
04 Dec - 11 Jan	Lufthansa
09 Dec - 12 Jan	Lufthansa
08 Dec - 07 Jan	Lufthansa
02 Dec - 07 Jan	Lufthansa
01 Dec - 26 Jan	SWISS
24 Dec - 19 Jan	British Airways

Also check the deals for one-way flights from London to Melbourne 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 Melbourne in December from 1004€

Return flights