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

Return flights

20 Aug - 03 Sep	KLM
20 Aug - 16 Sep	KLM
28 Aug - 05 Sep	SWISS
28 Aug - 12 Sep	SWISS
29 Aug - 11 Sep	KLM
26 Aug - 03 Sep	Air Dolomiti
28 Aug - 07 Sep	Air Dolomiti
20 Aug - 25 Aug	KLM
26 Aug - 06 Sep	Air Dolomiti
27 Aug - 02 Sep	Air Dolomiti
27 Aug - 06 Sep	Air Dolomiti
12 Aug - 31 Aug	KLM
24 Aug - 31 Aug	KLM
07 Aug - 29 Aug	KLM
22 Aug - 31 Aug	KLM
17 Aug - 24 Aug	KLM
25 Aug - 29 Aug	KLM
23 Aug - 30 Aug	KLM
21 Aug - 29 Aug	SWISS
05 Aug - 19 Aug	Air Dolomiti

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

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.

Book a cheap hotel in Cancun

Cheap car rent in Cancun

Cheapest return flights from London to Cancun in August from 933€

Return flights