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 is included
Additional accommodation before and at the end of the tour can be arranged for an extra cost
I did a three day safari with Karibu Tena and it was awesome. We visited Ngorongoro, Tarangire and Lake Manyara and we were able to see a lot of animals in their wild life: lions, elephants, zebras, giraffes, rhinos, hippopotamus, impalas,...