In this video, you will learn the proper and legal way to board a flight with firearms. Due to tightening security, there are specific steps you must take to do this without causing trouble.
Per the TSA, bringing your gun through the checkpoint is not what you should be doing.
You must have a hard-fitted case that is lockable and has padding on the inside. Your firearm must be completely unloaded of course. This includes both magazines and the chamber. You are allowed to bring ammunition with you, but it must be stored separately from the firearm.
You will then go to the airport ticket counter where they will give you a declaration form to fill out with your contact information. It is extremely important to declare it to the airline. You’ll then put the declaration ticket inside the box with your firearm. You’ll leave it at the counter and they’ll be sure it is packed into the bottom of the plane.