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

Return flights

27 Aug - 02 Sep	KLM
28 Aug - 02 Sep	British Airways
25 Aug - 23 Sep	KLM
28 Aug - 09 Sep	British Airways
29 Aug - 03 Sep	KLM
27 Aug - 04 Sep	KLM
21 Aug - 18 Sep	Kenya Airways
25 Aug - 08 Sep	KLM
20 Aug - 26 Aug	KLM
31 Aug - 08 Sep	KLM
21 Aug - 04 Sep	British Airways
25 Aug - 29 Aug	KLM
28 Aug - 31 Aug	British Airways
18 Aug - 26 Aug	British Airways
17 Aug - 31 Aug	KLM
21 Aug - 31 Aug	British Airways
18 Aug - 23 Aug	KLM
19 Aug - 27 Aug	SWISS
17 Aug - 26 Aug	KLM
22 Aug - 26 Aug	SWISS

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 781€

Return flights