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

Return flights

02 May - 17 May	SWISS
01 May - 10 May	SWISS
01 May - 15 May	SWISS
09 May - 17 May	SWISS
05 May - 14 May	Air Canada
07 May - 12 May	Air Canada
08 May - 12 May	Air Canada
01 May - 08 May	SWISS
08 May - 17 May	Air Canada
07 May - 10 May	American Airlines
07 May - 08 Jun	Finnair
24 May - 02 Jun	Avianca
30 May - 09 Jun	SWISS
26 May - 07 Jun	American Airlines
20 May - 01 Jun	Avianca
27 May - 10 Jun	American Airlines
28 May - 10 Jun	American Airlines
27 May - 07 Jun	American Airlines
26 May - 08 Jun	American Airlines
26 May - 05 Jun	Avianca

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.

Book a cheap hotel in Cancun

Cheap car rent in Cancun

Cheapest return flights from London to Cancun in May from 557€

Return flights