This operator can help select your international flights, but you'll have to book them yourself help
Fly to/from Kilimanjaro Airport (JRO - Check price) near Arusha. Or fly to/from Arusha Airport (ARK - Check price) via Dar es Salaam or Nairobi (Kenya)
A transfer from and back to the airport can be arranged for an extra cost
Additional accommodation before and at the end of the tour can be arranged for an extra cost
The safari that the Janus company organized for us was really impressive, in four days we visited to the Serengeti Park, the Ngorongoro Crater and the Tarangiri Park. The accommodation was organized in amazing places - very comfortable...