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

Return flights

20 Aug - 30 Sep	KLM
13 Aug - 23 Sep	British Airways
14 Aug - 08 Sep	KLM
13 Aug - 08 Sep	KLM
14 Aug - 07 Sep	KLM
14 Aug - 06 Sep	KLM
28 Aug - 11 Sep	British Airways
28 Aug - 07 Sep	KLM
20 Aug - 10 Sep	KLM
25 Aug - 23 Sep	KLM
07 Aug - 13 Aug	Turkish Airlines
05 Aug - 11 Aug	Air France
21 Aug - 29 Aug	British Airways
14 Aug - 18 Aug	KLM
13 Aug - 18 Aug	KLM
20 Aug - 31 Aug	KLM
18 Aug - 31 Aug	KLM
20 Aug - 29 Aug	KLM
28 Aug - 31 Aug	KLM
13 Aug - 17 Aug	KLM

Also check the deals for one-way flights from London to Zanzibar 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 London to Zanzibar in August from 717€

Return flights