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

Return flights

10 Sep - 16 Sep	AJet
11 Sep - 23 Sep	Pegasus Airlines
08 Sep - 16 Sep	Ryanair
10 Sep - 23 Sep	AJet
18 Sep - 23 Sep	Pegasus Airlines
25 Sep - 07 Oct	Pegasus Airlines
15 Sep - 23 Sep	AJet
09 Sep - 16 Sep	Ryanair
30 Sep - 07 Oct	Pegasus Airlines
09 Sep - 22 Sep	Ryanair
08 Sep - 22 Sep	Ryanair
06 Sep - 16 Sep	Ryanair
25 Sep - 12 Oct	Ryanair
22 Sep - 06 Oct	Ryanair
11 Sep - 01 Oct	Pegasus Airlines
23 Sep - 01 Oct	Pegasus Airlines
26 Sep - 02 Oct	Pegasus Airlines
19 Sep - 16 Oct	Ryanair
23 Sep - 02 Oct	Pegasus Airlines
25 Sep - 02 Oct	Pegasus Airlines

Also check the deals for one-way flights from London to Zanzibar 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 Zanzibar in September from 599€

Return flights