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

Return flights

04 May - 25 May	Air China
02 May - 09 May	Air China
03 May - 06 Jun	Air China
04 May - 11 May	Air China
12 May - 26 May	Air China
10 May - 31 May	Air China
24 May - 31 May	Air China
02 May - 22 May	Aer Lingus
01 May - 11 May	Air China
01 May - 08 May	Air China
16 May - 26 May	Air Serbia
22 May - 05 Jun	Air India
16 May - 02 Jun	Air Serbia
26 May - 16 Jun	Austrian Airlines
17 May - 14 Jun	Air India
18 May - 08 Jun	Air India
28 May - 18 Jun	Etihad Airways
29 May - 05 Jun	Cathay Pacific
04 May - 18 Jun	Malaysia Airlines
25 May - 26 Jun	Air India

Also check the deals for one-way flights from London to Perth in May.

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 May from $804

Return flights