My airplane is small but willing. I can fit a 28x21x21 inch carrier without trouble. If a dog is well enough to ride without carrier he/she can have the whole back seat. As much advance notice as possible is best- The trips I have done seem to take a couple weeks minimum to organize so please build your time line to accommodate and of course I need good weather. 250 mile radius of Moab Utah is most practical but please don't hesitate to ask for what you need. looking forward to helping out.