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

Return flights

18 Aug - 30 Aug	Spirit Airlines
15 Aug - 22 Aug	jetBlue
19 Aug - 03 Sep	Spirit Airlines
15 Aug - 25 Aug	Spirit Airlines
16 Aug - 23 Aug	Spirit Airlines
01 Aug - 13 Aug	Spirit Airlines
26 Aug - 10 Sep	Spirit Airlines
07 Aug - 03 Sep	Aeromexico
01 Aug - 14 Aug	jetBlue
04 Aug - 18 Aug	Spirit Airlines
13 Aug - 21 Aug	jetBlue
13 Aug - 10 Sep	jetBlue
04 Aug - 25 Aug	Virgin Atlantic
05 Aug - 25 Aug	Virgin Atlantic
25 Aug - 04 Sep	Air France
20 Aug - 28 Sep	Spirit Airlines
03 Aug - 08 Sep	Delta
29 Aug - 16 Sep	Air France
28 Aug - 01 Sep	Virgin Atlantic
26 Aug - 02 Sep	United

Also check the deals for one-way flights from Cancun to London 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 Cancun to London in August from 680€

Return flights