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

Return flights

07 May - 14 May	SWISS
06 May - 12 May	Air Canada
12 May - 21 May	Air Canada
03 May - 08 May	Air Canada
09 May - 17 May	Air Canada
01 May - 08 May	Air Canada
07 May - 21 May	Air Canada
03 May - 10 May	Air Canada
04 May - 11 May	Air Canada
06 May - 13 May	Air Canada
29 May - 01 Jun	SWISS
25 May - 07 Jun	British Airways
25 May - 08 Jun	British Airways
29 May - 07 Jun	United
23 May - 02 Jun	British Airways
23 May - 07 Jun	British Airways
22 May - 05 Jun	British Airways
29 May - 06 Jun	Air Canada

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

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 May from $695

Return flights