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

Return flights

09 Dec - 20 Jan	British Airways
05 Dec - 18 Jan	British Airways
01 Dec - 15 Jan	British Airways
12 Dec - 29 Dec	Lufthansa
26 Dec - 14 Jan	Lufthansa
01 Dec - 15 Dec	British Airways
04 Dec - 28 Dec	British Airways
09 Dec - 14 Dec	British Airways
01 Dec - 14 Dec	British Airways
10 Dec - 26 Dec	British Airways
05 Dec - 30 Dec	British Airways
06 Dec - 28 Dec	British Airways
08 Dec - 10 Dec	British Airways
03 Dec - 28 Dec	British Airways
10 Dec - 11 Jan	British Airways
09 Dec - 11 Jan	British Airways
11 Dec - 15 Jan	British Airways
08 Dec - 19 Jan	KLM
31 Dec - 21 Jan	KLM
24 Dec - 11 Jan	British Airways

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.

Book a cheap hotel in Perth

Cheap car rent in Perth

Cheapest return flights from London to Perth in December from $1463

Return flights