A dummy Indigo airline ticket is a legitimate document for visa, immigration, and return applications. For a number of purposes, including immigration, proof of return, and visa applications, a dummy airline ticket is a valid document. You can view a live PNR on the airline's website by selecting Manage My Booking or Manage My Trip. An unpaid hold ticket is essentially an online dummy ticket. A dummy ticket flight can be bought for just INR 350 or $5 in less than 10 minutes.