AirHint found the following cheapest return flights from Adelaide (ADL) to London (LHR) in September 2025 (see full year).

Return flights

01 Sep - 08 Sep	Jetstar
09 Sep - 16 Oct	Qantas
14 Sep - 22 Sep	Emirates
17 Sep - 21 Sep	Qantas
25 Sep - 26 Oct	Qatar Airways
26 Sep - 26 Oct	Qatar Airways
07 Sep - 21 Sep	British Airways
10 Sep - 24 Sep	Emirates
10 Sep - 11 Sep	Emirates
30 Sep - 21 Oct	Emirates
09 Sep - 15 Sep	British Airways
09 Sep - 13 Sep	British Airways
03 Sep - 11 Sep	Qantas
30 Sep - 28 Oct	British Airways
05 Sep - 10 Sep	British Airways
09 Sep - 15 Oct	British Airways
29 Sep - 18 Oct	Emirates
24 Sep - 16 Oct	Jetstar
23 Sep - 19 Oct	Qatar Airways
25 Sep - 16 Oct	British Airways

Also check the deals for one-way flights from Adelaide to London 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 London

Cheap car rent in London

Cheapest return flights from Adelaide to London in September from $1136

Return flights