Kilimanjaro International Airport (JRO) is approximately 60km (60 min) from Arusha city centre. Kilimanjaro International Airport is the closest International Airport to Arusha.

Arusha Municipal Airport (ARK) is on the outskirts of Arusha but only operates domestic flights (Dar es Salaam, Zanzibar, Serengeti).

Other options include flying to Dar es Salaam and then catching a domestic flight to Kilmanjaro or Arusha. You can also fly to Nairobi (Kenya).  International flights to this destination are often cheaper.  You can then fly from Nairobi to Kilimanjaro or take a bus from Nairobi Airport to Arusha (approximately 7 hours).