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

Return flights

13 Jan - 20 Jan	Aer Lingus
15 Jan - 22 Jan	Aer Lingus
29 Jan - 12 Feb	Aer Lingus
24 Jan - 05 Feb	Aer Lingus
10 Jan - 17 Jan	Aer Lingus
31 Jan - 07 Feb	Aer Lingus
19 Jan - 30 Jan	Brussels Airlines
19 Jan - 25 Jan	SWISS
17 Jan - 30 Jan	SWISS
17 Jan - 23 Jan	SWISS
21 Jan - 30 Jan	SWISS
19 Jan - 29 Jan	SWISS
21 Jan - 25 Jan	SWISS
21 Jan - 01 Feb	Lufthansa
24 Jan - 07 Feb	SWISS
21 Jan - 04 Feb	Virgin Atlantic
24 Jan - 02 Feb	Lufthansa
29 Jan - 17 Feb	Air Canada
29 Jan - 01 Feb	Air Canada
23 Jan - 02 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.

Book a cheap hotel in Cancun

Cheap car rent in Cancun

Cheapest return flights from London to Cancun in January from $561

Return flights