Papua New Guinea Immigration Authority does not issue Transit Visa.
  Should a Passenger transit for more than 8 hours, he/she will be required to obatain a Vistor's Visa prior to arrival at the Transit Lounge.
  Passengers who are transiting through Papua New Guinea for less than 8 hours do not require a visa.
  PS: Before transiting through Papua New Guinea please take into consideration any flight delays which may lead to your stay for more than 8 hours.