Air Niugini public relations office confirmed with Loop PNG this afternoon that its three flights out of Port Moresby were on schedule.
The airline also confirmed that its last flight at 3pm had just departed for Kagamuga.
Kagamuga International Airport came to a standstill on Wednesday afternoon as candidates contesting the Mt Hagen Open Seat blocked off the airport.
Flights in and out of the airport were cancelled with frustrated passengers from the other Highlands provinces left stranded.
The disruption was caused by angry candidates and their supporters calling on the Electoral Commissioner, Patilias Gamato, to change the Hagen Open Returning Officer.
They alleged that his decision in the 2012 National Elections in refusing to count 22 ballot boxes affected the end result.