Cheapest return flights from London to Cancun in September from $689

Best time to book flights for London (LHR) to Cancun (CUN) flights at AirHint

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

Return flights

09 Sep - 18 Sep KLM
09 Sep - 16 Sep KLM
05 Sep - 16 Sep Air Canada
12 Sep - 16 Sep Air Canada
12 Sep - 20 Sep Air Canada
10 Sep - 24 Sep Air Canada
17 Sep - 21 Sep Air Canada
17 Sep - 24 Sep Air Canada
12 Sep - 19 Sep Air Canada
13 Sep - 20 Sep Air Canada
22 Sep - 01 Oct Air Canada
22 Sep - 06 Oct Air Canada
25 Sep - 02 Oct Air Canada
19 Sep - 04 Oct Air Canada
21 Sep - 03 Oct Delta
26 Sep - 11 Oct Air Canada
26 Sep - 25 Oct Air Canada
27 Sep - 10 Oct Air Canada

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

Skyscanner

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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