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

Return flights

22 Sep - 30 Sep	easyJet
23 Sep - 30 Sep	Ryanair
25 Sep - 03 Oct	easyJet
22 Sep - 29 Sep	Vueling Airlines
30 Sep - 07 Oct	Ryanair
20 Sep - 30 Sep	Ryanair
21 Sep - 30 Sep	Ryanair
22 Sep - 25 Sep	easyJet
29 Sep - 07 Oct	Ryanair
25 Sep - 02 Oct	easyJet
19 Sep - 26 Sep	Ryanair
25 Sep - 04 Oct	easyJet
22 Sep - 01 Oct	easyJet
23 Sep - 02 Oct	easyJet
30 Sep - 12 Oct	Ethiopian Airlines
23 Sep - 01 Oct	Ethiopian Airlines
24 Sep - 01 Oct	Air Europa
18 Sep - 25 Sep	Ryanair
21 Sep - 27 Sep	Ryanair
20 Sep - 27 Sep	easyJet

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 630€

Return flights