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

Return flights

06 May - 15 May	Air Transat
28 May - 07 Jun	Air Transat
30 May - 06 Jun	Air Transat
28 May - 11 Jun	Air Transat
10 May - 22 May	Air Transat
06 May - 21 May	Air Transat
08 May - 15 May	Air Transat
18 May - 29 May	Air Transat
18 May - 28 May	Air Transat
25 May - 30 May	Air Transat
18 May - 23 May	Air Transat
26 May - 09 Jun	Air Transat
22 May - 16 Jun	Air Transat
28 May - 31 May	Air Transat
28 May - 03 Jun	Air Transat
26 May - 09 Jun	TUI	direct
29 May - 12 Jun	TUI	direct
28 May - 02 Jun	Air Transat
28 May - 11 Jun	TUI	direct
18 May - 24 May	Air Transat

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 $723

Return flights