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

Return flights

10 Dec - 21 Jan	Vueling Airlines
03 Dec - 16 Dec	SWISS
03 Dec - 10 Dec	SWISS
07 Dec - 22 Jan	SWISS
02 Dec - 08 Dec	Eurowings
03 Dec - 07 Dec	SWISS
01 Dec - 16 Dec	SWISS
01 Dec - 03 Dec	SWISS
03 Dec - 17 Dec	SWISS
04 Dec - 11 Dec	British Airways
05 Dec - 11 Dec	SWISS
06 Dec - 05 Jan	Eurowings
07 Dec - 09 Dec	SWISS
11 Dec - 07 Jan	Eurowings
15 Dec - 19 Jan	British Airways
29 Dec - 12 Jan	Turkish Airlines
07 Dec - 07 Jan	SWISS
08 Dec - 05 Jan	SWISS
08 Dec - 08 Jan	SWISS
05 Dec - 05 Jan	SWISS

Also check the deals for one-way flights from London to Perth 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 Perth in December from $899

Return flights