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

Return flights

15 Apr - 22 Apr	Aer Lingus
12 Apr - 19 Apr	Aer Lingus
28 Apr - 05 May	SWISS
24 Apr - 30 Apr	Air Canada
17 Apr - 01 May	Air Canada
17 Apr - 26 Apr	Air Canada
14 Apr - 24 Apr	Air Canada
16 Apr - 23 Apr	Air Canada
28 Apr - 08 May	Air Canada
24 Apr - 09 May	Air Canada
30 Apr - 07 May	Air Canada
29 Apr - 09 May	Air Canada
10 Apr - 19 Apr	Air Canada
08 Apr - 19 Apr	Air Canada
10 Apr - 03 May	Air Canada
09 Apr - 03 May	Air Canada
21 Apr - 28 Apr	British Airways
12 Apr - 22 Apr	British Airways
25 Apr - 04 May	British Airways
24 Apr - 04 May	British Airways

Also check the deals for one-way flights from London to Cancun in April.

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 April from $582

Return flights