New Delhi, April 19 : Vistara on Tuesday announced a summer time sale across its domestic and international network. The sale is available on all three classes of travel — economy, premium economy and business, a statement from the company said. Domestic bookings are open for a period of 72 hours from April 19 to 21, with one-way all-inclusive fares starting at Rs 2,499 for economy, Rs 3,459 for premium economy and Rs 9,999 for business class. On international routes, all-inclusive return fares start at Rs 12,999 for economy, Rs 17,249 for premium economy and Rs 35,549 for business class with a weekp-long booking period from April 19 to April 25. AKM MR