Rohtak, Dec. 11 -- Developed under the UDAN scheme, Hisar airport is struggling to draw passengers. On April 14, Prime Minister Narendra Modi had laid the foundation stone of Maharaja Agrasen airport's new terminal building to be built at an estimated cost of Rs.410 crore in Hisar and flagged off an Alliance Air flight from Hisar to Ayodhya via Delhi that operates twice a week. Besides, three flights operate in a week to Chandigarh and two in a week to Jaipur. "The flights to Jammu and Ahmedabad could not be started. We need time to attract passengers on the ongoing routes," said an official, requesting anonymity. Airport director OP Saini said, "On an average, 10 passengers take the flight to Chandigarh, while 12 head to Jaipur and there are about 18-20 passengers going to Ayodhya. The passenger load is less now but there is scope in the coming years." On May 23, passengers flying from Hisar to Ayodhya were left disappointed due to the non-functional air-conditioning system on board the Alliance Air flight. They experienced worse on the return journey on May 25 when the flight unexpectedly landed in Delhi instead of Hisar, leaving them with no choice but to arrange alternative transport to reach their destination nearly 200km away. The Hisar airport upgrade is expected to be completed in two years. An integrated aviation hub is being developed over 7,200 acres in Hisar, with 4,200 acres allocated for the airport and 3,000 acres for a manufacturing cluster that will house aerospace industries, logistics parks, and food-processing units....