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

Return flights

18 Mar - 25 Mar	Qatar Airways
10 Mar - 25 Mar	Qatar Airways
08 Mar - 22 Mar	Qatar Airways
05 Mar - 26 Mar	Qatar Airways
04 Mar - 10 Mar	Singapore Airlines
22 Mar - 09 Apr	Qatar Airways
10 Mar - 27 Mar	Virgin Australia
11 Mar - 27 Mar	Virgin Australia
13 Mar - 01 Apr	Virgin Australia
12 Mar - 30 Mar	Singapore Airlines
13 Mar - 30 Mar	Singapore Airlines
13 Mar - 31 Mar	Singapore Airlines
27 Mar - 14 Apr	Singapore Airlines
13 Mar - 01 Apr	Qantas	direct

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

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 March from $974

Return flights