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

Return flights

29 Dec - 19 Jan	Ryanair
29 Dec - 22 Jan	Ryanair
28 Dec - 16 Jan	Ryanair
27 Dec - 08 Jan	Ryanair
28 Dec - 08 Jan	Ryanair
28 Dec - 13 Jan	Ryanair
28 Dec - 11 Jan	Ryanair
27 Dec - 16 Jan	Ryanair
27 Dec - 12 Jan	Ryanair
27 Dec - 15 Jan	Ryanair
23 Dec - 30 Dec	Ryanair
22 Dec - 31 Dec	Ryanair
23 Dec - 25 Dec	Ryanair
24 Dec - 31 Dec	Ryanair
23 Dec - 31 Dec	Ryanair
24 Dec - 27 Dec	Ryanair
22 Dec - 29 Dec	Ryanair
23 Dec - 28 Dec	Ryanair
26 Dec - 31 Dec	Royal Air Maroc
21 Dec - 26 Dec	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 810€

Return flights