Not really. If you fly by private plane, there are no inspections and searches by TSA. Just walk up to the plane and fly away. The pilot might be asked to show ID, pilot license, and maybe a list of passenger names (with no addresses and ID needed for passengers.) That’s it. Private flights get a free pass from TSA inspections.
Even international private flights aren’t inspected by TSA. Customs, yes. But no TSA. What an idiotic system. Subject regular passengers to long waits and security searches, but anyone with the money to fly private gets no searches.
Thus, the system isn’t even slightly secure.