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

Return flights

16 Mar - 22 Mar	SWISS
02 Mar - 10 Mar	KLM
02 Mar - 12 Mar	KLM
10 Mar - 17 Mar	KLM
03 Mar - 10 Mar	SWISS
17 Mar - 24 Mar	Lufthansa
02 Mar - 09 Mar	Lufthansa
16 Mar - 26 Mar	Virgin Atlantic
16 Mar - 23 Mar	KLM
24 Mar - 31 Mar	Lufthansa
22 Mar - 01 Apr	Lufthansa
24 Mar - 02 Apr	Lufthansa
23 Mar - 02 Apr	Lufthansa
19 Mar - 16 Apr	Lufthansa
21 Mar - 02 Apr	SWISS
24 Mar - 07 Apr	Lufthansa
24 Mar - 06 Apr	Lufthansa
25 Mar - 01 Apr	Lufthansa
20 Mar - 06 Apr	Lufthansa
26 Mar - 02 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 543€

Return flights