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

Return flights

05 Dec - 14 Dec	jetBlue
26 Dec - 12 Jan	TAP
02 Dec - 11 Dec	Air Europa
23 Dec - 02 Jan	TAP
25 Dec - 02 Jan	TAP
16 Dec - 05 Jan	TAP
30 Dec - 07 Jan	TAP
25 Dec - 01 Jan	TAP
27 Dec - 09 Jan	TAP
16 Dec - 06 Jan	TAP
19 Dec - 02 Jan	TAP
18 Dec - 05 Jan	TAP
02 Dec - 11 Dec	British Airways	direct
05 Dec - 14 Dec	British Airways	direct
23 Dec - 29 Dec	TAP
01 Dec - 16 Dec	British Airways	direct
17 Dec - 29 Dec	British Airways	direct
12 Dec - 26 Dec	Air Europa
22 Dec - 27 Dec	Air Transat
20 Dec - 27 Dec	Air Caraibes

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 $807

Return flights