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

Return flights

12 Mar - 17 Mar	Brussels Airlines
12 Mar - 18 Mar	Brussels Airlines
12 Mar - 20 Mar	SWISS
03 Mar - 09 Mar	SWISS
03 Mar - 10 Mar	SWISS
11 Mar - 23 Mar	SWISS
11 Mar - 18 Mar	SWISS
11 Mar - 17 Mar	SWISS
02 Mar - 16 Mar	SWISS
04 Mar - 10 Mar	SWISS
22 Mar - 01 Apr	Air Canada
18 Mar - 01 Apr	Air Canada
30 Mar - 15 Apr	Air Canada
19 Mar - 02 Apr	Air Canada
23 Mar - 02 Apr	Air Canada
05 Mar - 02 Apr	Air Canada
31 Mar - 14 Apr	Air Canada
31 Mar - 07 Apr	Air Canada
26 Mar - 09 Apr	United
26 Mar - 01 Apr	Lufthansa

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

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 March from $644

Return flights