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

Return flights

02 Dec - 09 Dec	Lufthansa
01 Dec - 08 Dec	Lufthansa
04 Dec - 14 Dec	Lufthansa
09 Dec - 13 Jan	British Airways
05 Dec - 15 Jan	Lufthansa
04 Dec - 11 Dec	British Airways
02 Dec - 10 Dec	British Airways
04 Dec - 07 Dec	British Airways
03 Dec - 06 Dec	British Airways
01 Dec - 13 Jan	British Airways
08 Dec - 15 Dec	British Airways
02 Dec - 11 Dec	British Airways
08 Dec - 14 Dec	British Airways
15 Dec - 06 Jan	KLM
10 Dec - 14 Jan	British Airways
31 Dec - 18 Jan	KLM
16 Dec - 04 Jan	KLM
04 Dec - 15 Jan	British Airways
29 Dec - 25 Jan	KLM
31 Dec - 15 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 $1039

Return flights