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

Return flights

12 Sep - 17 Oct	Ryanair
14 Sep - 21 Sep	Pegasus Airlines
04 Sep - 20 Sep	Pegasus Airlines
01 Sep - 14 Sep	Ryanair
09 Sep - 17 Sep	Ryanair
02 Sep - 23 Sep	Ryanair
09 Sep - 16 Sep	Ryanair
21 Sep - 05 Oct	Pegasus Airlines
01 Sep - 15 Sep	Ryanair
04 Sep - 18 Sep	Pegasus Airlines
26 Sep - 03 Oct	Ryanair
10 Sep - 24 Sep	Pegasus Airlines
25 Sep - 09 Oct	Ryanair
06 Sep - 27 Sep	Ryanair
25 Sep - 25 Oct	Pegasus Airlines
30 Sep - 07 Oct	Ryanair
25 Sep - 04 Oct	Ryanair
28 Sep - 26 Oct	Ryanair
28 Sep - 04 Oct	Ryanair
28 Sep - 02 Oct	Ryanair

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

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.

Book a cheap hotel in Perth

Cheap car rent in Perth

Cheapest return flights from London to Perth in September from 808€

Return flights