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

Return flights

02 Dec - 09 Dec	Air India
02 Dec - 16 Jan	Etihad Airways
02 Dec - 30 Jan	Air India
02 Dec - 06 Dec	Etihad Airways
30 Dec - 18 Jan	Etihad Airways
30 Dec - 20 Jan	Etihad Airways
01 Dec - 01 Jan	Austrian Airlines
12 Dec - 03 Jan	Thai Airways
05 Dec - 04 Jan	Brussels Airlines
17 Dec - 24 Dec	Brussels Airlines
04 Dec - 14 Jan	Cathay Pacific
10 Dec - 24 Jan	British Airways
01 Dec - 07 Dec	Qatar Airways
16 Dec - 13 Jan	Etihad Airways
03 Dec - 11 Dec	Cathay Pacific
10 Dec - 30 Dec	British Airways
19 Dec - 26 Dec	Thai Airways
13 Dec - 20 Dec	Austrian Airlines
11 Dec - 30 Dec	British Airways
23 Dec - 30 Dec	Thai 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.

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Cheapest return flights from London to Perth in December from $1049

Return flights