What I pack when Flying.
I carry a .45auto on all flights within the the USA. Mexico,and Canada are definitely off limits. On one flight to Windsor Canada, I opened the cabin door to be greeted by the local customs agent. She wanted to see the paper work and passports. She then asked if we had any firearms. I called the other pilot and asked him if he brought his gun with him. He answered no, and I told the agent that not on this trip. She gave me a stare, and I thought she was going to search the cabin. They can't take a joke!!!
Flying will never be the same as long as the Feds make the rules.