Cheapest return LHR–CUN flights, September

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

Return flights

19 Sep - 10 Oct SWISS
11 Sep - 02 Oct SWISS
25 Sep - 10 Oct SWISS
29 Sep - 07 Oct Aer Lingus
01 Sep - 22 Oct Aer Lingus
01 Sep - 01 Oct Aer Lingus
23 Sep - 06 Oct Air Canada
03 Sep - 10 Sep Aer Lingus
28 Sep - 12 Oct Air Canada
25 Sep - 02 Oct SWISS
05 Sep - 12 Sep SWISS
05 Sep - 20 Sep SWISS
12 Sep - 28 Sep SWISS
03 Sep - 19 Sep SWISS
06 Sep - 20 Sep Aer Lingus
01 Sep - 15 Sep Aer Lingus
03 Sep - 14 Sep Aer Lingus
02 Sep - 27 Oct Aer Lingus
09 Sep - 16 Sep Finnair
10 Sep - 27 Sep Finnair

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

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