These cases by Jakob Winter are the standard for a form-fitted rolling tuba case. While not ideal for flying, they are successfully used in cars, buses, trucks and trains worldwide. If you must fly with a Winter case, additional packing inside is recommended. It can be done. These are smaller than MTS or SKB cases.
These "exact fit" cases have an insert to brace the tuba by the top bow so the bell isn't supporting the weight of the tuba. This is the key to reducing tuba injuries in-transit.
We have the case Miraphone 1281 F - exact fit
Shipping these big cases is a deal - it costs the same as shipping a tuba. However, if you're interested, send a a note and we can offer a current quote, maybe shipped through a company that specializes in shipping bicycle boxes - similar size.
Better yet, buy a new 1281 tuba and we'll put it inside.