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

Return flights

12 May - 16 May	KLM
18 May - 26 May	KLM
04 May - 18 May	KLM
24 May - 31 May	KLM
01 May - 19 May	KLM
18 May - 25 May	KLM
19 May - 02 Jun	KLM
05 May - 12 May	Lufthansa
11 May - 25 May	KLM
25 May - 01 Jun	KLM
14 May - 11 Jun	KLM
04 May - 18 Jun	KLM
03 May - 10 May	Lufthansa
01 May - 31 May	KLM
31 May - 07 Jun	KLM
05 May - 02 Jun	KLM
29 May - 12 Jun	KLM
23 May - 01 Jun	KLM
15 May - 26 Jun	KLM

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 945€

Return flights