This feature has not yet been implemented.
Airports are a quick way to get from different parts of San Andreas.
There are 2 major airports in San Andreas:
- Los Santos International Airport
- Sandy Shores Airfield
To fly at an airport, simply go to the airport, enter the marker located at the airport, pay the ticket and you will be flown by NPC to the destination.
You can jump out of the aircraft at anytime (you should automatically be given a parachute).