The building was soft launched on December 3 in the presence of Union Minister for Civil Aviation Ajit Singh.
Various agencies, including Customs, have began shifting to the new terminus building.
"We will have the first arrivals at the airport on December 19," sources from the Union Civil Aviation Ministry said.
The full fledged functioning of the new building would begin in a phased manner after December 19, he said.
Constructed at a cost of Rs 345 crore, it can handle 2750 peak hour passengers at a time.
Apart from domestic and international flights, this airport hosts arrivals of 1000 chartered flights annually.