To reschedule your Vistara flight ticket, adhere to the Vistara flight change policy. Visit the official Vistara website and log in to your account. Navigate to the "Manage Booking" section, where you can find options for rescheduling. Follow the provided instructions, and be aware of any applicable fees or conditions outlined in the Vistara flight change policy. Ensure a smooth process by familiarizing yourself with the guidelines to make the necessary adjustments to your travel itinerary.