Mike....that would be a massive problem...I assume you mean with a lithium battery fitted....if you google 'lithium batteries,airfreight' you will see all the problems,especially since that battery fire blew a hole in the side of a freight jet.
There are special labels and packaging requirents to transport lithium batteries (above laptop size),if you get the labelling wrong the CAA can fine you Euro 20,000.
It is making us very nervous about sending ebikes by courier export,because sometimes if the road trunker is not busy and the airfreight is light,they transfer road to air.
My advice...forget it...its not worth the hassle.
KudosDave