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
10 Mar - 17 Mar	Aer Lingus
12 Mar - 19 Mar	Aer Lingus
03 Mar - 19 Mar	Aer Lingus
12 Mar - 21 Mar	Aer Lingus
05 Mar - 14 Mar	Aer Lingus
19 Mar - 26 Mar	Aer Lingus
19 Mar - 30 Mar	Aer Lingus
07 Mar - 14 Mar	Aer Lingus
02 Mar - 16 Mar	SWISS
24 Mar - 03 Apr	SWISS
31 Mar - 08 Apr	Avianca
25 Mar - 08 Apr	Avianca
13 Mar - 03 Apr	Virgin Atlantic	direct
30 Mar - 09 Apr	Avianca
19 Mar - 10 Apr	Brussels Airlines
24 Mar - 09 Apr	Avianca
31 Mar - 14 Apr	Air Canada
27 Mar - 03 Apr	Air Canada
30 Mar - 11 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 488€

Return flights