AirHint found the following cheapest return flights from Cancun (CUN) to London (LGW) in December 2025 (see full year).

Return flights

26 Dec - 29 Dec	TAP
16 Dec - 02 Jan	TAP
01 Dec - 15 Dec	Iberojet
11 Dec - 16 Dec	TAP
02 Dec - 09 Dec	British Airways	direct
18 Dec - 08 Jan	TAP
03 Dec - 10 Dec	British Airways	direct
10 Dec - 09 Jan	British Airways
20 Dec - 02 Jan	TAP
01 Dec - 30 Dec	British Airways	direct
02 Dec - 16 Dec	Air Canada
22 Dec - 05 Jan	Air Canada
01 Dec - 15 Dec	British Airways	direct
29 Dec - 10 Jan	Iberojet
21 Dec - 07 Jan	Air Transat
22 Dec - 29 Dec	Air Transat
08 Dec - 15 Dec	British Airways	direct
10 Dec - 09 Jan	British Airways	direct
28 Dec - 07 Jan	Air Transat
28 Dec - 04 Jan	Air Europa

Also check the deals for one-way flights from Cancun 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 Cancun to London in December from 749€

Return flights