From my own experience, it's okay to take a guitar on the plane. You can take it on the plane. There's room for it. It is very inconvenient to take a bus or train, because there are too many people on the bus, which is extremely inconvenient for yourself and other passengers, and takes up too much space.

It's too much trouble to carry home two or three times in four years. I usually run back and forth with ukulele on my back ~

But if you like guitar very much, you can run with your back. After all, what you like is the most important thing ~