Vistara is celebrating their 100 days of taking flight in a unique manner. They are presently running a promotion on their website, where passengers who book an Economy class ticket have the chance to win an upgrade to the Premium Economy cabin.
To get your hands on one of these upgrades, all you need to do is book your Air Vistara tickets directly with the airline between April 16 to 20, 2015, for travel between April 21 and July 31, 2015. Everyday, 20 passengers who book their tickets that day will receive a free upgrade voucher code, and this will be emailed to them. They will need to call the Vistara call centre and get the upgrade applied. Having said that, they don’t assure you an upgrade since the T&C states the upgrade is basis availability.
Here is my review of the Vistara experience.