disposable bike bag for flying?

I've just coming to the end of a great six weeks in Spain with a bicycle. I flew in via easyjet with my bike in a proper bike bag and will be taking it home to Belfast this friday the same way. The bike bag has been a real pain to store and has required use of a car to and from each airport. Anybody any clever thoughts on flying into an airport using some bike packaging cheap enough to throw away? Alternatively is there any way of cheaply storing a bike bag at most airports?

Drew

ACER ADOBE SYSTEMS ADVANCED SEMICONDUCTOR ENGINEERING ALLIANCE DATA SYSTEMS ALLTEL