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

Return flights

04 May - 12 May	Air Canada
01 May - 16 May	Air Canada
05 May - 12 May	Air Canada
11 May - 18 May	Air Canada
12 May - 22 May	Air Canada
12 May - 19 May	Air Canada
12 May - 17 May	Air Canada
11 May - 20 May	Air Canada
06 May - 12 May	SWISS
12 May - 20 May	Air Canada
24 May - 03 Jun	Avianca
25 May - 01 Jun	Avianca
24 May - 06 Jun	Air Canada
29 May - 07 Jun	Air Canada
21 May - 01 Jun	SWISS
28 May - 04 Jun	Air Canada
27 May - 06 Jun	Lufthansa
31 May - 12 Jun	Virgin Atlantic

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 567€

Return flights