Air cargo is generally not a good business. At least for airlines who take most of the long-term capacity risk. In the last five year the business went from dull to awesome. Many companies made more profit in the last five years than in their entire history. The first half of this year was pretty good and companies continue to naively believe that everything will be ok. We take the view the ice age may be just around the corner. Or at least go back to being dull. This article looks at the different Eras in the life of air cargo and outlines some scenarios that could unfold over the next years.