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

Return flights

19 May - 26 May	SWISS
05 May - 12 May	SWISS
11 May - 25 May	KLM
26 May - 02 Jun	SWISS
29 May - 08 Jun	British Airways
29 May - 29 Jun	British Airways
11 May - 18 May	KLM
11 May - 24 May	British Airways
22 May - 25 May	British Airways
08 May - 24 May	British Airways
29 May - 12 Jun	KLM
01 May - 25 May	KLM
12 May - 15 May	KLM
11 May - 15 May	KLM
29 May - 13 Jun	SWISS
27 May - 14 Jun	KLM
28 May - 18 Jun	Condor

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 $1548

Return flights