Indigo’s airlines have strong domestic markets with some short-haul international flights. That characteristic describes Australia and Virgin’s main opportunity. : If this is your first time registering, please check your inbox for more information about the benefits of your Forbes account and what you can do next! A potential suitor for Virgin Australia is one of the world’s largest buyers of aircraft yet is neither an airline nor a leasing company. It’s Indigo Partners, the U.S. private equity firm founded by Bill Franke. Indigo has re-emerged as a potential buyer for Virgin Australia, which is in voluntary administration.