Aside from a few minor uses, the primary reason for booking a dummy ticket for visa application. Most embassies and high commissions require a flight reservation as part of the visa application process. You might need a dummy ticket for visas like the Schengen visa, UAE (Dubai) visa, Canada visa, Japan visa, UK visa, US visa, and many other countries. Generally, dummy tickets are required for visit visas. Additionally, a dummy return flight ticket can be presented at immigration as proof of your planned return.