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
17 Mar - 24 Mar	Aer Lingus
03 Mar - 12 Mar	Aer Lingus
19 Mar - 28 Mar	Aer Lingus
07 Mar - 12 Mar	Aer Lingus
05 Mar - 08 Mar	Air Canada
18 Mar - 29 Mar	Air Canada
18 Mar - 23 Mar	Lufthansa
05 Mar - 11 Mar	Virgin Atlantic
21 Mar - 02 Apr	Air Canada
25 Mar - 03 Apr	Air Canada
26 Mar - 01 Apr	Aer Lingus
25 Mar - 06 Apr	Avianca
26 Mar - 08 Apr	Aer Lingus
25 Mar - 04 Apr	Avianca
26 Mar - 02 Apr	Air Canada
20 Mar - 11 Apr	Avianca
21 Mar - 11 Apr	Avianca
25 Mar - 05 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