Generally, demand for higher price business class and first class air flight tickets come mainly from corporate travellers and wealthy individuals. As an air courier, you can get really cheap international plane tickets. Courier companies ship material in the luggage space of an aircraft passenger because it can be quicker, cheaper, and more reliable than sending the shipment unaccompanied, since checked luggage bypasses many of the typical customs delays. The courier company begins by purchasing airfare, and then they resell the plane tickets to you. In exchange for your luggage space, they give you a discount on the airfare.
