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

Return flights

04 May - 11 May	jetBlue
06 May - 13 May	Air Canada
12 May - 21 May	Air Canada
04 May - 14 May	Air Canada
04 May - 18 May	Air Canada
13 May - 21 May	Air Canada
13 May - 18 May	Air Canada
02 May - 11 May	SWISS
02 May - 12 May	SWISS
04 May - 10 May	Air Canada
28 May - 03 Jun	Avianca
28 May - 04 Jun	TAP
29 May - 05 Jun	Iberia
24 May - 03 Jun	Air France
27 May - 01 Jun	Air France
20 May - 06 Jun	Air France
20 May - 10 Jun	Delta
22 May - 02 Jun	TAP
16 May - 07 Jun	SWISS

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 $751

Return flights