AirHint found the following cheapest return flights from London (LCY) to Heraklion (HER) in September 2025 (see full year).

Return flights

20 Sep - 26 Sep	SWISS
04 Sep - 08 Sep	SWISS
18 Sep - 22 Sep	SWISS
17 Sep - 22 Sep	Lufthansa
21 Sep - 26 Sep	SWISS
12 Sep - 22 Sep	SWISS
15 Sep - 26 Sep	SWISS
25 Sep - 29 Sep	SWISS
16 Sep - 23 Sep	SWISS
09 Sep - 16 Sep	SWISS
26 Sep - 01 Oct	SWISS
21 Sep - 06 Oct	SWISS
26 Sep - 03 Oct	SWISS
22 Sep - 03 Oct	SWISS
27 Sep - 06 Oct	SWISS
30 Sep - 07 Oct	SWISS
21 Sep - 02 Oct	SWISS
25 Sep - 02 Oct	SWISS
30 Sep - 06 Oct	SWISS
29 Sep - 06 Oct	Lufthansa

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

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 Heraklion in September from $354

Return flights