IndiGo says: Flight operations are impacted due to structural damage to Terminal 1, Delhi Airport because of adverse weather conditions. This has led to flight cancellations at Delhi as passengers are not able to enter the terminal. Passengers already inside the terminal will be able to board their planned flights, but those with flights later in the day will be offered alternatives. This unplanned situation has also led to operations across the network being impacted. Customers are advised to keep a track of and confirm their flight status before leaving for the airport.