Again it should be obvious that no one is going to let you walk onboard an airplane carrying a sword. Check with your airline to see if they have any special rules for swords but in general into the checked luggage it goes. There are specialized sword carrying cases that you can buy for just that purpose. HOWEVER we recommend that you use FedEx, UPS, or Express Mail to ship it to your destination instead. It will cost about the same as the extra baggage fees that the airlines will charge you and it will avoid the dangers of the automated baggage handling equipment snapping your sword in two (or losing it altogether).