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

Return flights

29 Dec - 26 Jan	Vueling Airlines
29 Dec - 15 Jan	easyJet
29 Dec - 20 Jan	easyJet
29 Dec - 08 Jan	easyJet
29 Dec - 13 Jan	Air Transat
30 Dec - 18 Jan	Vueling Airlines
29 Dec - 14 Jan	easyJet
30 Dec - 17 Jan	KM Malta Airlines
27 Dec - 23 Jan	Vueling Airlines
30 Dec - 30 Jan	easyJet
27 Dec - 30 Dec	easyJet
27 Dec - 31 Dec	easyJet
27 Dec - 29 Dec	easyJet
29 Dec - 31 Dec	easyJet
28 Dec - 29 Dec	easyJet
29 Dec - 29 Dec	easyJet
27 Dec - 31 Dec	British Airways	direct
27 Dec - 30 Dec	British Airways	direct
28 Dec - 29 Dec	British Airways	direct
29 Dec - 31 Dec	British Airways	direct

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 831€

Return flights