If you go to this page, and select origin & destination, it will tell you the distance between the two airports as well as lots of other information, before you lease the gate: https://www.airlineenterprise.com/research/routes
edit: or do you mean a page where you can select origin airport, type in a distance range, and then it returns all airports within that range?
edit: or do you mean a page where you can select origin airport, type in a distance range, and then it returns all airports within that range?
I am the developer of Airline Enterprise