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

Return flights

27 Oct - 06 Nov	KLM
30 Oct - 06 Nov	KLM
07 Oct - 16 Oct	Delta
06 Oct - 16 Oct	Delta
28 Oct - 05 Nov	Delta
29 Oct - 05 Nov	Delta
07 Oct - 15 Oct	Delta
28 Oct - 04 Nov	Delta
07 Oct - 14 Oct	Delta
06 Oct - 12 Oct	Delta
06 Oct - 30 Oct	KLM
27 Oct - 03 Nov	Virgin Atlantic
27 Oct - 11 Nov	Delta
13 Oct - 21 Oct	Delta
13 Oct - 23 Oct	Virgin Atlantic
27 Oct - 05 Nov	Delta
02 Oct - 08 Oct	Delta
21 Oct - 06 Nov	KLM
02 Oct - 12 Oct	Delta
21 Oct - 05 Nov	Delta

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 $663

Return flights