Air India on Thursday said it will refund the full amount to all passengers affected by the diversion of its Delhi-San Francisco flight of June 6 owing to mid-air glitch, according to an airline communication. In the communication by Air India Chief Customer Experience and Ground Handling Officer Rajesh Dogra, the airline told the passengers, who reached their destination after nearly 56 hours of departing from Delhi: “We will fully refund the fare for your journey and, in addition, provide you a voucher for future travel on Air India”.