A quick method I have used in the past using TTools is to change the names of certain airports on existing flight plans to ones where you want to see the aircraft. For example here is a simple flight plan from FS9....
AC#45,N24680,20%,8Hr,IFR,00:35:16,03:43:43,290,F,5119,KLEX,04:35:13,07:43:40,300,F,5118,MMPB
which as you see flies a schedule between Lexington KY and an airport in Mexico MMPB.Change the names there to any others (MUST be on your airports list) and the ai will fly between those instead .....if you put your airport ID in both places the ai will take off and fly around some then land back at your airport
Not the ideal method and preferably by learning to use TTools and how AI works you can write flight plans to suit any airports you want using any aircraft.........
Other way is just to get EZscenery or rwy12 Object placer and put static stuff on your airports....not so much fun that...commoner
