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
Sure, finding and choosing the right company for a safari is a tricky thing because there is a vast choice and a high number of mostly and reasonably good operators out there, and it isn't trivial to make pick from a distance, from home. ...