Auric Air amongst others fly to Zanzibar from Dar Es Salaam (Tanzania)
It's a 15 minute hop in a Cessna 206 Caravan.
Short Finals to DAR
https://www.flickr.com/photos/plane_...posted-public/
DAR Charter Ramp
https://www.flickr.com/photos/plane_...posted-public/
Zanzibar
https://www.flickr.com/photos/plane_...posted-public/