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

Return flights

04 Dec - 11 Dec	TAP
02 Dec - 11 Dec	Air Europa
10 Dec - 17 Dec	Air Canada
22 Dec - 02 Jan	Iberojet
26 Dec - 08 Jan	Iberojet
26 Dec - 05 Jan	Iberojet
26 Dec - 02 Jan	Iberojet
26 Dec - 10 Jan	Iberojet
22 Dec - 01 Jan	Iberojet
18 Dec - 02 Jan	Air Europa
25 Dec - 04 Jan	Air Europa
19 Dec - 02 Jan	Iberojet
18 Dec - 08 Jan	Air Europa
05 Dec - 19 Dec	TAP
04 Dec - 13 Dec	TAP
21 Dec - 23 Dec	Air Europa
11 Dec - 17 Dec	TAP

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 $741

Return flights