AirHint found the following cheapest return flights from London (LHR) to Cancun (CUN) in October 2025 (see full year).

Return flights

01 Oct - 07 Oct	Air Canada
01 Oct - 06 Oct	Air Canada
01 Oct - 16 Oct	SWISS
03 Oct - 06 Oct	Air Canada
01 Oct - 18 Oct	Air Canada
03 Oct - 18 Oct	Air Canada
01 Oct - 21 Oct	Air Canada
01 Oct - 10 Oct	Air Canada
03 Oct - 10 Oct	Air Canada
01 Oct - 08 Oct	Air Canada
30 Oct - 11 Nov	Lufthansa
30 Oct - 07 Nov	Lufthansa
31 Oct - 07 Nov	Lufthansa
31 Oct - 15 Nov	Lufthansa
31 Oct - 14 Nov	Lufthansa
30 Oct - 08 Nov	Lufthansa
30 Oct - 09 Nov	British Airways
29 Oct - 06 Nov	British Airways
29 Oct - 19 Nov	Virgin Atlantic	direct
31 Oct - 09 Nov	Virgin Atlantic	direct

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 $662

Return flights