My camera gear goes in a carry on - never in a checked luggage. I use a Lowepro pack pack which will fit under seat or in the overhead (it also fits in the overhead of small Regional jets). I also have a small roller bag that does the same. I have strapped a travel tripod to the pack pack with no problem. Years ago I had a point & shoot stolen out my checked bag. I only check my cloths. All your batteries must be in your carry on - not your checked bag. I also tape the electrical contacts. I am on precheck and wiz thru TSA. If not, they may inspect your gear and ask you to turn in the camera. You can have a battery in the camera. I do not believe they would allow you to have a camera hanging on your neck during take offs or landings. For foreign travel check the airline for carry on bag size & weight limits.