All

I am planing to do my first light touring in Europe (aprox. 350 miles). I am planning to take my bicycle, but the route I have set starts in one city and ends on another one.

I am planning to use a cardboard box, discard it in the starting city and trying to find another one on the target city. I am not sure how easy is to get another box.

Are there other suggestions? I understand that major airlines only accept boxes

Thanks
Alfredo