[8] Airport Authority of India built an Interim Terminal Building, a taxi track, and the apron area.

[12] In January 2018, SpiceJet was selected to operate flights from Darbhanga to Delhi, Bengaluru and Mumbai, under the Government's Regional Connectivity Scheme called UDAN.

[22][23] This was also suggested by Jayant Sinha at the foundation stone laying ceremony for the construction of the current passenger terminal, by naming the airport after famous Maithili poet, Vidyapati.

[27][28] Therefore, work on the new terminal officially began after Prime Minister Narendra Modi laid the foundation stone on 20 October 2024.

The cost of the terminal and adjoining developments has been revised to ₹912 crore (US$110 million), and the project has a deadline of completion by September 2026.

It will have 40 check-in counters, 14 self-check-in kiosks, 12 automatic tray retrieval systems, 30 door- frame metal detector machines, four conveyor belts in the arrivals area and five aerobridges.

The new terminal will be designed to showcase traditional Madhubani paintings and draw architectural inspiration from the 19th-century Darbhanga Fort.

Local artists will create artworks and sculptures for the waiting areas and the interior design will feature natural and earthy colour palettes.

It will be a green and sustainable building, with electricity powered by solar energy, rainwater harvesting and water recycling systems, use of natural light over artificial LED lights, and will be advanced with technology to benefit all passengers like lifts, escalators, free WiFi, washrooms, sufficient seating areas, facilities for physically challenged persons like wheelchairs, medical and emergency facilities, firefighting services, tourist facilitation services like tourist information desks and vehicle parking areas outside the terminal, which will include a multi-level parking building on either sides of the approach roads connecting the terminal, among others.