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

Return flights

02 Dec - 09 Dec	Ryanair
13 Dec - 23 Dec	Ryanair
29 Dec - 23 Jan	Ryanair
12 Dec - 23 Dec	Ryanair
05 Dec - 12 Dec	Ryanair
02 Dec - 18 Dec	Ryanair
29 Dec - 12 Jan	Ryanair
06 Dec - 16 Dec	Ryanair
17 Dec - 23 Dec	Ryanair
16 Dec - 22 Dec	Ryanair
13 Dec - 28 Dec	Ryanair
17 Dec - 12 Jan	Ryanair
15 Dec - 12 Jan	Ryanair
29 Dec - 09 Jan	Ryanair
11 Dec - 18 Dec	Ryanair
28 Dec - 09 Jan	Ryanair
27 Dec - 09 Jan	Ryanair
15 Dec - 13 Jan	Ryanair
30 Dec - 13 Jan	Ryanair
27 Dec - 07 Jan	Ryanair

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 657€

Return flights