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

One-Way flights

02 Dec	TUI	direct
03 Dec	Ryanair
31 Dec	Vueling Airlines
10 Dec	Ryanair
11 Dec	Wizz Air Malta
12 Dec	Norse Atlantic Airways (UK)
13 Dec	Wizz Air Malta
30 Dec	Norse Atlantic Airways (UK)
29 Dec	Norse Atlantic Airways (UK)
17 Dec	Vueling Airlines

Also check the deals for return 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 one-way flights from London to Cancun in December from 351€

One-Way flights