The hotel minibus is an easy and free way to get between the airport and where you’re staying. All but the smallest establishments have one; contact them ahead, or call for free from the NCD Tourist Office in the international arrivals area. In the domestic terminal, buy a phonecard from the shop beside the cafe.
Taxis wait outside both terminals and you’ll need to negotiate the fare before you leave. A taxi to Waigani or Boroko should cost around K40, and to Town it’s about K50–60.