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

Return flights

27 Oct - 02 Nov	Air Canada
27 Oct - 03 Nov	Air Canada
28 Oct - 09 Nov	Air Canada
28 Oct - 05 Nov	Air Canada
01 Oct - 11 Oct	Brussels Airlines
08 Oct - 15 Oct	Air Canada
01 Oct - 15 Oct	Air Canada
07 Oct - 17 Oct	Air Canada
06 Oct - 20 Oct	Air Canada
26 Oct - 09 Nov	Air Canada
02 Oct - 11 Oct	Air Canada
04 Oct - 14 Oct	Air Canada
31 Oct - 07 Nov	Air Canada
12 Oct - 07 Nov	Air Canada
23 Oct - 04 Nov	Air Canada
07 Oct - 10 Oct	jetBlue
21 Oct - 25 Oct	Air Canada
19 Oct - 29 Oct	Air Canada
31 Oct - 11 Nov	Air Canada

Also check the deals for one-way flights from London to Cancun in October.

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 October from 633€

Return flights