Long ago, in 2013, Amazon CEO Jeff Bezos spoke about building a UAV delivery system.  While we wait to see that happen, Amazon has started building serious air cargo capacity. Currently, Amazon Prime Air has 30 767-300Fs. The fleet plan is to have 40 767Fs in service. The table shows the fleet transactions between January and December 2017.
(source: Planespotters.net)
This is rapid growth and with each delivery, Amazon becomes less dependent on FedEx and UPS. The company contracts operations using Air Transport International and Atlas Air. Demand for a growing fleet is likely being driven Amazon Prime.  No other e-commerce company has its own air freight fleet.  Amazon’s growth is worthy of watching closely.
