An IndiGo passenger who was to travel to Patna from Delhi airport boarded a different flight and landed at Udaipur, and aviation regulator DGCA is probing the incident. The incident whereby the passenger landed at Udaipur airport happened on January 30. "We are aware of the incident that took place with a passenger in 6E-319, Delhi-Udaipur flight. We are engaged with the authorities on this matter," the airline said in a statement on Friday.