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

Return flights

03 Dec - 05 Dec	Virgin Australia
14 Dec - 27 Dec	Jetstar
13 Dec - 27 Dec	Jetstar
15 Dec - 22 Dec	Jetstar
14 Dec - 29 Dec	Jetstar
14 Dec - 28 Dec	Jetstar
14 Dec - 21 Dec	Jetstar
15 Dec - 28 Dec	Singapore Airlines
15 Dec - 29 Dec	Singapore Airlines
02 Dec - 06 Jan	Emirates
11 Dec - 17 Dec	Emirates
20 Dec - 10 Jan	Emirates

Also check the deals for one-way flights from Cairns 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.

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Cheapest return flights from Cairns to London in December from $1359

Return flights