What is a Virtual Airline?  

According to Wikipedia, it is a dedicated hobby organization that uses flight simulation to model the operations of an airline.
There are thousands of other Virtual Airlines which reconstruct the operations of either a fictional or a real airline such as ours.

Advances in technology have made Flight Simulation a hobby accessible to more and more people around the world. Virtual Airlines take this experience a level futher and provide their pilots with valuable resources to train them, help themp plan flights and exchange with other aficionados.