AirHint found the following cheapest return flights from London (LHR) to Cancun (CUN) in December 2026 (see full year).

Return flights

01 Dec - 06 Dec	Lufthansa
02 Dec - 09 Dec	Virgin Atlantic	direct
03 Dec - 10 Dec	American Airlines
04 Dec - 09 Dec	SWISS
04 Dec - 13 Dec	Air Canada
02 Dec - 11 Dec	Air Canada
02 Dec - 11 Dec	Virgin Atlantic	direct
04 Dec - 09 Dec	Virgin Atlantic	direct
01 Dec - 22 Dec	Lufthansa
09 Dec - 21 Dec	Air Canada
28 Dec - 11 Jan	Air Canada
12 Dec - 06 Jan	Finnair
10 Dec - 01 Jan	Air France
24 Dec - 05 Jan	Air Canada
10 Dec - 02 Jan	Air France
29 Dec - 09 Jan	Air Canada
28 Dec - 06 Jan	Air Canada
26 Dec - 09 Jan	Air Canada
29 Dec - 03 Jan	Air Canada
24 Dec - 03 Jan	Air Canada

Also check the deals for one-way flights from London to Cancun 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 London to Cancun in December from 557€

Return flights