Press Airlines around the world are constantly looking to add new destinations to their route network. They perform multiple route evaluations in order to know if a route will be profitable in the long term or not. Air carriers use many programs and tools to perform their route studies. They look at passenger demand forecasts, hub connectivity, aircraft availability, and other competitors. Here are the four key considerations that an airline must make while both tweaking existing routes and planning new ones.
Source: 4 considerations airlines must make when planning new routes « Sabre
