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

Return flights

13 Mar - 19 Mar	SWISS
14 Mar - 24 Mar	SWISS
10 Mar - 17 Mar	SWISS
02 Mar - 10 Mar	SWISS
17 Mar - 24 Mar	SWISS
03 Mar - 10 Mar	SWISS
07 Mar - 24 Mar	SWISS
10 Mar - 31 Mar	SWISS
18 Mar - 24 Mar	SWISS
17 Mar - 31 Mar	SWISS
14 Mar - 02 Apr	SWISS
24 Mar - 01 Apr	Lufthansa
26 Mar - 02 Apr	Lufthansa
24 Mar - 07 Apr	SWISS
23 Mar - 04 Apr	SWISS
19 Mar - 09 Apr	Lufthansa
31 Mar - 14 Apr	SWISS
31 Mar - 09 Apr	Lufthansa
31 Mar - 08 Apr	Lufthansa
26 Mar - 07 Apr	SWISS

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 $729

Return flights