Liz Buchanan BVSc MRCVS
Hello! Rabbits are prey species ie when they get frightened, they sometimes freeze or allow interaction rather than run. They generally pretend not to be stressed or in pain, because the animal that looks stressed and in pain will get eaten by the predator, which will always single out the weakest. However, they are only 'designed' to cope with stress for very short periods of time (until the fox gets tired) and they struggle badly with chronically unsuitable conditions. The upshot of this is that rabbits do not look stressed to our eyes, even when they are. They sit with Cortisol streaming through their veins, looking quite 'chilled out' in some shocking welfare environments. That leads people to make huge mistakes as regarding their welfare.
Travelling for a long distance will be terrifying for a rabbit. It will involve new sights, smells, noises, most of them linked with dear for the animal. It will be stressed and unable to run to safety in a carrier. This is a completely false environment and inappropriate.
Furthermore, rabbits have a strong evolutionary need for company and forage. They must not be kept alone; those kept alone in general, as I understand it, have been shown to live for much less long and show many more stress behaviours than those bonded into pairs. They do not form appropriate 'pairs' with humans. In the past we didn't know that rabbits prefer to live in bonded groups and this led to some very poor welfare conventions. But now we do know.
I would recommend making alternative arrangements for your rabbit and furthermore, reading about bonded rabbit pairs and how to find a lifelong partner for your pet before it gets any older. Please do not subject the little one to the stress of a flight; it is very unsafe.
Perhaps the breeder will take it back for a while and return it with a friend or sibling?
I'm sorry that this will be a disappointing answer.