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

Return flights

04 Dec - 11 Dec	easyJet
02 Dec - 16 Dec	easyJet
03 Dec - 11 Dec	easyJet
01 Dec - 11 Dec	easyJet
13 Dec - 23 Dec	easyJet
07 Dec - 11 Dec	easyJet
15 Dec - 23 Dec	easyJet
29 Dec - 08 Jan	easyJet
10 Dec - 18 Dec	easyJet
02 Dec - 18 Dec	easyJet
11 Dec - 25 Dec	easyJet
29 Dec - 07 Jan	easyJet
01 Dec - 31 Jan	easyJet
15 Dec - 02 Jan	easyJet
23 Dec - 01 Jan	easyJet
15 Dec - 06 Jan	easyJet
24 Dec - 06 Jan	easyJet
27 Dec - 17 Jan	easyJet
31 Dec - 08 Jan	easyJet
12 Dec - 10 Jan	easyJet

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 602€

Return flights