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

Return flights

13 Sep - 20 Sep	Ethiopian Airlines
18 Sep - 26 Sep	FlySafair	direct
01 Sep - 04 Sep	Ethiopian Airlines
16 Sep - 21 Sep	Kenya Airways
08 Sep - 14 Sep	Kenya Airways
13 Sep - 16 Sep	Kenya Airways
19 Sep - 26 Sep	Kenya Airways
13 Sep - 17 Sep	Kenya Airways
21 Sep - 27 Sep	Kenya Airways
04 Sep - 12 Sep	Kenya Airways
30 Sep - 08 Oct	Kenya Airways
27 Sep - 03 Oct	Kenya Airways
30 Sep - 04 Oct	FlySafair	direct
27 Sep - 03 Oct	FlySafair	direct
30 Sep - 07 Oct	FlySafair	direct

Also check the deals for one-way flights from Johannesburg 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 Johannesburg to Zanzibar in September from $362

Return flights