AirHint found the following cheapest return flights from Perth (PER) to London (LHR) in December 2026 (see full year).

Return flights

01 Dec - 22 Dec	Cathay Pacific
01 Dec - 10 Dec	Cathay Pacific
01 Dec - 15 Dec	Cathay Pacific
08 Dec - 29 Dec	Cathay Pacific
07 Dec - 28 Dec	Cathay Pacific
03 Dec - 28 Dec	Cathay Pacific
03 Dec - 05 Dec	Cathay Pacific
17 Dec - 30 Dec	TransNusa
03 Dec - 09 Dec	Qantas
02 Dec - 30 Dec	Qantas
25 Dec - 17 Jan	Cathay Pacific
25 Dec - 16 Jan	Cathay Pacific
02 Dec - 04 Jan	Cathay Pacific
07 Dec - 03 Jan	Thai Airways
03 Dec - 03 Jan	Thai Airways
08 Dec - 03 Jan	Thai Airways
11 Dec - 04 Jan	Vietnam Airlines
25 Dec - 14 Jan	Cathay Pacific
24 Dec - 08 Jan	Philippine Airlines
01 Dec - 05 Jan	Thai 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 905€

Return flights