When you carry cash with you on an airline trip, you should take some very basic steps to keep from becoming a victim of theft, or from losing your money by accident.
1.Avoid traveling with large amounts of cash.
2.If you have to take cash, keep it in a carry on bag.
3.Never put your cash, financial instruments, or precious metals in a checked bag.
4.Keep your cash and other valuables out of public view.
5.Keep your baggage and belongings in sight when passing through a security checkpoint.
6.If your carry on baggage must be searched, insist on keeping your bag in sight.
7.If asked about the amount of money in your baggage by a TSA agent or other responsible authority, tell the truth.
8.If you suspect that you have been a victim of theft, contact an airport police officer or other law enforcement representative immediately (note that TSA agents are not law enforcement agents)
If you suspect that a TSA screener or other screening area employee has stolen your property, contact a supervisor.