New Delhi/Mumbai/Pune, Dec. 4 -- "No updates, no message - just chaos," said Vishal M, one of the several IndiGo passengers across the country whose travel plans were disrupted on Wednesday after the domestic carrier cancelled at least 150 flights due to operational disruptions. "The bare minimum is to inform passengers when a flight is cancelled," Vishal said after his Pune-Delhi flight was cancelled. Flyers across India similarly reported that they were stuck at airports and even inside aircraft for hours as they waited for updates on whether their flight was taking to the skies or being cancelled/delayed. "I lost two connecting flights to Kochi because of this," said Neha Mulay, who was set to travel on a Bengaluru-bound flight from Pune at 5.55am before the flight was delayed for four hours and then cancelled. Chaos unfolded at Delhi's Indira Gandhi International (IGI) Airport after nearly 42 IndiGo flights were cancelled and around 100 were delayed until 5pm. Vaishnavi Pathak (28) said that she had a Nashik-bound connecting flight at 6.25pm, however, three hours before her scheduled departure she was informed that her flight had been cancelled. "I was told that the flight has been cancelled by the Air Traffic Control (ATC) and not IndiGo due to pollution. My original booking was for Delhi to Nashik but they gave another flight ticket from Delhi to Mumbai after making me wait for more than an hour," she said. While Vaishnavi was fortunate to find a Maharashtra-bound flight on the same day, others struggled to find any respite. "Do you have anything in the evening or tonight or maybe early morning," asked 27-year-old Roshni Chhetri at IndiGo's ticket counter at Terminal 3. In return, the reply she received was: "Nothing can be arranged today" A couple who arrived in India from the US for a three-month-long vacation were given the same response. "We've been told that there's a flight only after 5.30am on Thursday. We don't stay in Delhi and they have not given us any accommodation," said 76-year-old Gautam Patil, who spent the last 40 hours travelling from Chicago to Delhi with his 73-year-old wife. The couple at last decided to stay at a friend's place before they board another IndiGo flight to Ahmedabad on Thursday. At Mumbai's Chhatrapati Shivaji Maharaj International Airport (CSMIA), the delays and cancellations left many passengers stranded. "Many were looking for water and food," said a CSMIA official, requesting anonymity. "Our staff, along with the Central Industrial Security Force, was giving water to the passengers and pacifying them. But the IndiGo staffers were finding it tough to give answers." One passenger, who did not wish to be identified, told HT: "I was supposed to travel to Chennai on flight 6E 927 at 11.50 am, but could not board till 4.30pm."...