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

Return flights

31 Aug - 13 Sep	Lufthansa
27 Aug - 03 Sep	American Airlines
22 Aug - 02 Sep	Lufthansa
24 Aug - 02 Sep	Lufthansa
29 Aug - 05 Sep	Air Canada
25 Aug - 05 Sep	Austrian Airlines
25 Aug - 03 Sep	Austrian Airlines
26 Aug - 05 Sep	Austrian Airlines
23 Aug - 03 Sep	American Airlines
23 Aug - 02 Sep	Virgin Atlantic
24 Aug - 31 Aug	Lufthansa
22 Aug - 29 Aug	Lufthansa
05 Aug - 13 Aug	Avianca
04 Aug - 13 Aug	KLM
25 Aug - 30 Aug	Lufthansa
22 Aug - 31 Aug	Lufthansa
22 Aug - 28 Aug	Lufthansa
05 Aug - 12 Aug	Avianca
14 Aug - 28 Aug	Iberia
21 Aug - 28 Aug	Lufthansa

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.

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Cheapest return flights from London to Cancun in August from 641€

Return flights