If I remember correctly you are going to have a problem because the crate and dog will go over 100#. It doesn't pertain to me because my dog weights 55# but you better check to see if there are weight limits. A large crate weights about 24# so an XL + 85 is going to be a heavy package. It is possible that limit is only with the airline (?) that I read that about and this was a few years ago. Good luck I hope you find a way.
I doubled checked this info today with the party involved and he said the dog could fly if the weight was over 100# but it was really, really expensive. I suspect every airline has their own rules plus the rules they must follow.