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

Return flights

07 May - 21 May	Air China
11 May - 25 May	Air China
21 May - 04 Jun	Air China
03 May - 17 May	Air China
04 May - 25 May	Air China
07 May - 22 May	Air China
17 May - 24 May	Air China
12 May - 29 May	Air China
05 May - 17 May	Air China
10 May - 24 May	Air China
07 May - 26 May	Air China
14 May - 11 Jun	Air China
18 May - 08 Jun	Air China
26 May - 06 Jun	Air China
03 May - 06 Jun	Austrian Airlines
23 May - 06 Jun	Air China
19 May - 02 Jun	Air China
31 May - 07 Jun	Gulf Air
18 May - 01 Jun	Gulf Air
23 May - 01 Jun	Aer Lingus

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 694€

Return flights