Travelling by air with a musical instrument is never easy. If you check in your instrument on a flight with one or more stopovers, there is always the chance that you reach your destination and find that it has been offloaded at another intermediate stop, or worse, has been damaged as a result of rough handling.
If you plan to carry it with you as part of your cabin baggage, you have to make sure that you use a high quality equipment case that is specially built to protect your valuable instruments. The Flight Case Company recently came out with this infographic that has tons of tips for musicians travelling with instruments.