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

Return flights

23 Dec - 25 Jan	China Southern
01 Dec - 08 Dec	Jetstar
04 Dec - 11 Dec	Jetstar
01 Dec - 09 Dec	Jetstar
05 Dec - 30 Dec	Jetstar
05 Dec - 31 Dec	Jetstar
18 Dec - 18 Jan	Jetstar
25 Dec - 04 Jan	China Southern
23 Dec - 20 Jan	China Southern
04 Dec - 29 Dec	Indonesia AirAsia
09 Dec - 17 Jan	Virgin Australia
08 Dec - 08 Jan	Jetstar
11 Dec - 15 Jan	Jetstar
05 Dec - 29 Dec	Jetstar
09 Dec - 23 Dec	Virgin Australia
25 Dec - 15 Jan	Virgin Australia
08 Dec - 05 Jan	Jetstar
15 Dec - 29 Jan	China Southern
05 Dec - 28 Dec	Jetstar
22 Dec - 30 Dec	China Southern

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

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 December from 941€

Return flights