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

Return flights

16 Dec - 23 Dec	Ryanair
05 Dec - 15 Dec	Ryanair
05 Dec - 12 Dec	Ryanair
01 Dec - 15 Dec	Ryanair
31 Dec - 15 Jan	Ryanair
06 Dec - 12 Dec	Ryanair
01 Dec - 22 Dec	Ryanair
28 Dec - 12 Jan	Ryanair
29 Dec - 07 Jan	Ryanair
03 Dec - 07 Dec	Ryanair
29 Dec - 30 Dec	Ryanair
15 Dec - 19 Dec	Ryanair
09 Dec - 12 Dec	Ryanair
21 Dec - 12 Jan	Ryanair
12 Dec - 30 Jan	Ryanair
24 Dec - 07 Jan	Ryanair
28 Dec - 09 Jan	Ryanair
23 Dec - 15 Jan	Ryanair
12 Dec - 11 Jan	Ryanair
30 Dec - 09 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 748€

Return flights