I flew from Texas to Japan a couple of weeks ago. I had a duffel bag, backpack, and my skateboard. I checked the duffel bag because most airlines allow either two check-ons or a carry on and personal item (supposed to be for like strollers and wheelchairs, but I used it for my skateboard). So I carried the board with me until I got to Tokyo. I had one more flight with JAL and I already knew they had to check it in, they wrap it in plastic for me just in case it is raining. I fly between Japan and the states and within Japan pretty often, and I always take my board.