AirHint found the following cheapest return flights from London (LHR) to Cancun (CUN) in January 2026 (see full year).

Return flights

23 Jan - 30 Jan	Icelandair
22 Jan - 30 Jan	Icelandair
23 Jan - 02 Feb	Icelandair
23 Jan - 25 Jan	Icelandair
12 Jan - 26 Jan	SWISS
21 Jan - 29 Jan	Icelandair
17 Jan - 27 Jan	Icelandair
13 Jan - 23 Jan	Icelandair
19 Jan - 28 Jan	Icelandair
13 Jan - 21 Jan	Icelandair
17 Jan - 21 Jan	Icelandair
31 Jan - 09 Feb	Icelandair
28 Jan - 05 Feb	Icelandair
21 Jan - 04 Feb	Icelandair
22 Jan - 02 Feb	Icelandair
26 Jan - 01 Feb	Icelandair
31 Jan - 05 Feb	Icelandair
28 Jan - 04 Feb	Virgin Atlantic	direct
28 Jan - 07 Feb	Icelandair
21 Jan - 18 Feb	Air Canada

Also check the deals for one-way flights from London to Cancun in January.

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 January from 554€

Return flights