This operator can help select your international flights, but you'll have to book them yourself help
Fly to/from Abeid Amani Karume Airport (ZNZ - Check price) on Zanzibar. Or fly to/from Dar es Salaam (DAR - Check price) . There are daily ferries between Dar es Salaam and Zanzibar.
A transfer from and back to the airport is included
Additional accommodation before and at the end of the tour can be arranged for an extra cost
In the end, I did not book with this intermediairy/travel agency. Also after paying the 10% bookingfee. - When I asked 3 questions in my email, I only got 1 answer. I had to go back and remind the operator about the other 2 questions....