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

Return flights

29 Oct - 06 Nov	KLM
14 Oct - 17 Oct	Delta
29 Oct - 04 Nov	KLM
04 Oct - 15 Oct	British Airways
28 Oct - 18 Nov	SWISS
02 Oct - 14 Oct	British Airways
30 Oct - 06 Nov	KLM
03 Oct - 18 Oct	SWISS
03 Oct - 13 Oct	Delta
16 Oct - 22 Oct	British Airways
29 Oct - 08 Nov	SWISS
01 Oct - 11 Oct	SWISS
03 Oct - 12 Oct	Delta
03 Oct - 20 Oct	Delta
27 Oct - 08 Nov	SWISS
03 Oct - 17 Oct	Delta
31 Oct - 08 Nov	SWISS
24 Oct - 14 Nov	Lufthansa
24 Oct - 02 Nov	Lufthansa
15 Oct - 01 Nov	SWISS

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 $790

Return flights