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

Return flights

11 Dec - 18 Jan	Finnair
20 Dec - 29 Jan	Finnair
23 Dec - 11 Jan	Finnair
07 Dec - 28 Dec	China Southern
01 Dec - 07 Jan	China Southern
27 Dec - 11 Jan	China Southern
15 Dec - 02 Jan	China Southern
18 Dec - 25 Dec	Air New Zealand
17 Dec - 18 Jan	China Southern
23 Dec - 03 Jan	Air New Zealand
12 Dec - 11 Jan	China Southern
12 Dec - 21 Jan	China Southern
21 Dec - 31 Dec	British Airways

Also check the deals for one-way flights from Christchurch 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 Christchurch to London in December from 1337€

Return flights