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

Return flights

06 May - 13 May	SWISS
06 May - 18 May	SWISS
06 May - 20 May	SWISS
07 May - 18 May	SWISS
03 May - 13 May	Air Canada
09 May - 19 May	Air Canada
02 May - 12 May	Air Canada
01 May - 15 May	Air Canada
03 May - 10 May	Air Canada
05 May - 16 May	Air Canada
15 May - 01 Jun	Lufthansa
11 May - 01 Jun	United
23 May - 06 Jun	Lufthansa
19 May - 02 Jun	Air Canada
31 May - 07 Jun	American Airlines
23 May - 13 Jun	Lufthansa
29 May - 10 Jun	American Airlines
30 May - 09 Jun	American Airlines
23 May - 03 Jun	American Airlines
30 May - 10 Jun	American Airlines

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 496€

Return flights