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

Return flights

01 Dec - 04 Dec	Singapore Airlines
15 Dec - 11 Jan	Indonesia AirAsia
02 Dec - 15 Dec	Singapore Airlines
01 Dec - 14 Dec	Singapore Airlines
03 Dec - 29 Dec	Cathay Pacific
03 Dec - 30 Dec	Cathay Pacific
02 Dec - 14 Jan	Qatar Airways
03 Dec - 10 Dec	Qatar Airways
01 Dec - 15 Jan	Qatar Airways
02 Dec - 09 Jan	Singapore Airlines
04 Dec - 11 Jan	Singapore Airlines
08 Dec - 29 Dec	Cathay Pacific
04 Dec - 05 Jan	Singapore Airlines
04 Dec - 04 Jan	Singapore Airlines
30 Dec - 30 Dec	Cathay Pacific
24 Dec - 28 Jan	Cathay Pacific
24 Dec - 14 Jan	Cathay Pacific
24 Dec - 11 Jan	Cathay Pacific
24 Dec - 31 Dec	Qatar Airways
08 Dec - 13 Dec	Qatar Airways

Also check the deals for one-way flights from Perth to London 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 Perth to London in December from $1195

Return flights