KATHMANDU: Flights to and from Kathmandu have been disrupted following the closure of the sole runway at Tribhuvan International Airport (TIA) today morning. According to TIA official, the runway has been closed to carry out maintenance works and flight operations would resume after the maintenance work for the day is complete. The TIA has been carrying out runway rehabilitation from 10:00 pm to 8:00 am since April 1. The airport is scheduled to be closed for 10 hours a day for another month. The domestic terminal of TIA was overcrowded today with passengers waiting to board their flights. Despite which, many of the flights got either delayed or cancelled, stranding the passengers.