There were long queues and delayed flights at Terminal 3 of Delhi's Indira Gandhi International Airport on Thursday evening due to delays in baggage clearance of hundreds of passengers.The airport operator, GMR-led Delhi International Airport Limited or DIAL, said the delays were caused by an increased number of check-ins of dangerous goods, such as power banks and lighters in the checked-in luggage of passengers. Due to the long holiday weekend, the check-in rate of such items was about 30 per cent higher than usual, DIAL said.