Virtual airlines are just like their real-world counterparts, except they are online and use pilots who use flight simulators! They usually reflect the same routes, flights, aircraft and other attributes of their real-life counterpart.
Flying for one of these could really bring your flight simulation experience to life and add another dimension of fun or realism to your flights. You're not just flying for fun; your flying hours and experience will be added to your roster. You can also be given specific routes and flights to complete and build up your earnings for your VA.