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

Return flights

03 Mar - 17 Mar	Aer Lingus
19 Mar - 26 Mar	Aer Lingus
17 Mar - 24 Mar	Aer Lingus
12 Mar - 19 Mar	Aer Lingus
04 Mar - 13 Mar	SWISS
03 Mar - 13 Mar	SWISS
05 Mar - 13 Mar	SWISS
05 Mar - 16 Mar	SWISS
04 Mar - 11 Mar	Virgin Atlantic	direct
18 Mar - 31 Mar	SWISS
19 Mar - 03 Apr	SWISS
19 Mar - 02 Apr	SWISS
12 Mar - 02 Apr	SWISS
24 Mar - 02 Apr	SWISS
23 Mar - 02 Apr	SWISS
20 Mar - 03 Apr	Air Canada
25 Mar - 02 Apr	Lufthansa
25 Mar - 03 Apr	Lufthansa
23 Mar - 06 Apr	Avianca
25 Mar - 08 Apr	Avianca

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 456€

Return flights