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

Return flights

17 Sep - 23 Sep	Ryanair
16 Sep - 23 Sep	Ryanair
17 Sep - 26 Sep	Vueling Airlines
22 Sep - 03 Oct	easyJet
30 Sep - 05 Oct	Ethiopian Airlines
25 Sep - 03 Oct	Ethiopian Airlines
16 Sep - 30 Sep	Ryanair
23 Sep - 30 Sep	Ryanair
24 Sep - 01 Oct	Ryanair
30 Sep - 07 Oct	easyJet
12 Sep - 19 Sep	easyJet
16 Sep - 29 Sep	Ryanair
29 Sep - 07 Oct	Ryanair
15 Sep - 29 Sep	easyJet
30 Sep - 12 Oct	Ryanair
26 Sep - 03 Oct	Ryanair
30 Sep - 08 Oct	Ethiopian Airlines
29 Sep - 08 Oct	Ethiopian Airlines
22 Sep - 29 Sep	Ryanair
22 Sep - 28 Sep	Ryanair

Also check the deals for one-way flights from Porto 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 Porto to Zanzibar in September from $744

Return flights