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

Return flights

18 Sep - 30 Sep	Air France
18 Sep - 25 Sep	Air France
18 Sep - 27 Sep	Air France
02 Sep - 16 Sep	Air France
20 Sep - 27 Sep	Air France
25 Sep - 02 Oct	Air France
25 Sep - 07 Oct	Air France
24 Sep - 02 Oct	Air France
12 Sep - 30 Sep	Air France
04 Sep - 25 Sep	Air France
08 Sep - 16 Sep	KLM
09 Sep - 16 Sep	KLM
10 Sep - 30 Sep	KLM
18 Sep - 02 Oct	Air France
25 Sep - 05 Oct	Air France
29 Sep - 09 Oct	Air France
15 Sep - 03 Oct	Iberia
20 Sep - 01 Oct	Air France

Also check the deals for one-way flights from London to Havana 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 Havana in September from 556€

Return flights