Hi, thanks for your many comments.
The painting cannot be rolled, that would damage the painting. I also agree that checking the painting is probably not a good idea.
I agree the Canadair Regional flight (MUC>STR) is probably the bigger problem in terms of storage. I will sit in Business Class, so that mean the seat next to me will be empty, but I don't think a painting fo these dimensions would fit on the seat?
Are there closets like there are on say the A340 on these small regional jets?
I saw Lufthansa always allows transporting a wheelchair for free on all flights, so if there is room for a wheelchair on all planes, it seems there should be room for such a painting as well?
Thanks.